Tag: meant (page 2 of 8)

When did humans first begin to wear clothes?

March 12, 2015 / / 0 Comments



Excerpt from todayifoundout.com

Determining exactly when humans began wearing clothes is a challenge, largely because early clothes would have been things like animal hides, which degrade rapidly. Therefore, there’s very little archaeological evidence that can be used to determine the date that clothing started being worn. 

There have been several different theories based on what archaeologists have been able to find. For instance, based on genetic skin-coloration research, humans lost body hair around one million years ago—an ideal time to start wearing clothes for warmth. The first tools used to scrape hides date back to 780,000 years ago, but animal hides served other uses, such as providing shelter, and it’s thought that those tools were used to prepare hides for that, rather than clothing. Eyed needles started appearing around 40,000 years ago, but those tools point to more complex clothing, meaning clothes had probably already been around for a while.
All that being said, scientists have started gathering alternative data that might help solve the mystery of when we humans started covering our bits.

A recent University of Florida study concluded that humans started wearing clothes some 170,000 years ago, lining up with the end of the second-to-last ice age. How did they figure that date out? By studying the evolution of lice.

Scientists observed that clothing lice are, well, extremely well-adapted to clothing. They hypothesized that body lice must have evolved to live in clothing, which meant that they weren’t around before humans started wearing clothes. The study used DNA sequencing of lice to calculate when clothing lice started to genetically split from head lice.

The findings of the study are significant because they show that clothes appeared some 70,000 years before humans started to migrate north from Africa into cooler climates. The invention of clothing was probably one factor that made migration possible.
This timing also makes sense due to known climate factors in that era.  As Ian Gilligan, a lecturer at the Australian National University, said that the study gave “an unexpectedly early date for clothing, much earlier than the earliest solid archaeological evidence, but it makes sense. It means modern humans probably started wearing clothes on a regular basis to keep warm when they were first exposed to Ice Age conditions.”

As to when humans moved on from animal hides and into textiles, the first fabric is thought to have been an early ancestor of felt. From there, early humans took up weaving some 27,000 years ago, based on impressions of baskets and textiles on clay. Around 25,000 years ago, the first Venus figurines—little statues of women—appeared wearing a variety of different clothes that pointed to weaving technology being in place by this time.
From there, more recent ancient civilizations discovered many materials they could fashion into clothing. For instance, Ancient Egyptians produced linen around 5500 BC, while the Chinese likely started producing silk around 4000 B.C.

As for clothing for fashion, instead of just keeping warm, it is thought that this occurred relatively early on. The first example of dyed flax fibers were found in a cave in the Republic of Georgia and date back to 36,000 years ago. That being said, while they may have added colour, early clothes seem to have been much simpler than the clothing we wear today—mostly cloth draped over the shoulder and pinned at the waist.

Around the mid-1300s in certain regions of the world, with some technological advances in previous century, clothing fashion began to change drastically from what it was before. For instance, clothing started to be made to form fit the human body, with curved seams, laces, and buttons. Contrasting colours and fabrics also became popular in England. From this time, fashion in the West began to change at an alarming rate, largely based on aesthetics, whereas in other cultures fashion typically changed only with great political upheaval, meaning changes came more slowly in most other cultures.

The Industrial Revolution, of course, had a huge impact on the clothing industry. Clothes could now be made en mass in factories rather than just in the home and could be transported from factory to market in record time. As a result, clothes became drastically cheaper, leading to people having significantly larger wardrobes and contributing to the constant change in fashion that we still see today.

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Mars Had an Ocean, Scientists Say, Pointing to a Treasure Trove of New Data

March 5, 2015 / / 0 Comments





Excerpt from nytimes.com

After six years of planetary observations, scientists at NASA say they have found convincing new evidence that ancient Mars had an ocean.

It was probably the size of the Arctic Ocean, larger than previously estimated, the researchers reported on Thursday. The body of water spread across the low-lying plain of the planet’s northern hemisphere for millions of years, they said.

If confirmed, the findings would add significantly to scientists’ understanding of the planet’s history and lend new weight to the view that ancient Mars had everything needed for life to emerge.
“The existence of a northern ocean has been debated for decades, but this is the first time we have such a strong collection of data from around the globe,” said Michael Mumma, principal investigator at NASA’s Goddard Center for Astrobiology and an author of the report, published in the journal Science. “Our results tell us there had to be a northern ocean.”
But other experts said the question was hardly resolved. The ocean remains “a hypothesis,” said Ashwin Vasavada, project scientist of the Curiosity rover mission at the Jet Propulsion Laboratory in Pasadena, Calif.

Dr. Mumma and Geronimo Villanueva, a planetary scientist at NASA, measured two slightly different forms of water in Mars’ atmosphere. One is the familiar H2O, which consists of two hydrogen atoms and one oxygen atom.

The other is a slightly “heavier” version of water, HDO, in which the nucleus of one hydrogen atom contains a neutron. The atom is called deuterium.

The two forms exist in predictable ratios on Earth, and both have been found in meteorites from Mars. A high level of heavier water today would indicate that there was once a lot more of the “lighter” water, somehow lost as the planet changed.

The scientists found eight times as much deuterium in the Martian atmosphere than is found in water on Earth. Dr. Villanueva said the findings “provide a solid estimate of how much water Mars once had by determining how much water was lost to space.”

He said the measurements pointed to an ancient Mars that had enough water to cover the planet to a depth of at least 137 meters, or about 450 feet. Except for assessments based on the size of the northern basin, this is the highest estimate of the amount of water on early Mars that scientists have ever made.

The water on Mars mostly would have pooled in the northern hemisphere, which lies one to three kilometers — 0.6 to 1.8 miles — below the bedrock surface of the south, the scientists said.
At one time, the researchers estimated, a northern ocean would have covered about 19 percent of the Martian surface. In comparison, the Atlantic Ocean covers about 17 percent of Earth’s surface.

The new findings come at a time when the possibility of a northern ocean on Mars has gained renewed attention.

The Curiosity rover measured lighter and heavier water molecules in the Gale Crater, and the data also indicated that Mars once had substantial amounts of water, although not as much as Dr. Mumma and Dr. Villanueva suggest.

“The more water was present — and especially if it was a large body of water that lasted for a longer period of time — the better the chances are for life to emerge and to be sustained,” said Paul Mahaffy, chief of the atmospheric experiments laboratory at the Goddard Space Flight Center.

Just last month, the science team running the Curiosity rover held its first formal discussion about the possibility of such an ocean and what it would have meant for the rest of Mars.

Scientists generally agree that lakes must have existed for millions of years in Gale Crater and elsewhere. But it is not clear how they were sustained and replenished.

“For open lakes to remain relatively stable for millions of years — it’s hard to figure how to do that without an ocean,” Dr. Vasavada said. “Unless there was a large body of water supplying humidity to the planet, the water in an open lake would quickly evaporate and be carried to the polar caps or frozen out.”

Yet climate modelers have had difficulty understanding how Mars could have been warm enough in its early days to keep water from freezing. Greenhouse gases could have made the planet much warmer at some point, but byproducts of those gases have yet to be found on the surface.

James Head, a professor of geological sciences at Brown University, said in an email that the new paper had “profound implications for the total volume of water” on ancient Mars.

But, he added, “climate models have great difficulty in reconstructing an early Mars with temperatures high enough to permit surface melting and liquid water.”

Also missing are clear signs of the topographic and geological features associated with large bodies of water on Earth, such as sea cliffs and shorelines.

Based on low-resolution images sent back by the Viking landers, the geologist Timothy Parker and his colleagues at the NASA Jet Propulsion Lab reported in 1989 the discovery of ancient shorelines. But later high-resolution images undermined their conclusions.

Still, Dr. Parker and his colleagues have kept looking for — and finding, they say — some visible signs of a northern ocean. The new data “certainly encourages me to do more,” he said in an interview.

Other researchers have also been looking for signs of an ancient ocean.

In 2013, Roman DiBiase, then a postdoctoral student at the California Institute of Technology, and Michael Lamb, an assistant professor of geology there, identified what might have been a system of channels on Mars that originated in the southern hemisphere and emptied steeply into the northern basin — perhaps, they said, water flowing through a delta to an ocean.

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What happens to your body when you give up sugar?

March 4, 2015 / / 0 Comments





Excerpt from independent.co.uk
By Jordan Gaines Lewis


In neuroscience, food is something we call a “natural reward.” In order for us to survive as a species, things like eating, having sex and nurturing others must be pleasurable to the brain so that these behaviours are reinforced and repeated.
Evolution has resulted in the mesolimbic pathway, a brain system that deciphers these natural rewards for us. When we do something pleasurable, a bundle of neurons called the ventral tegmental area uses the neurotransmitter dopamine to signal to a part of the brain called the nucleus accumbens. The connection between the nucleus accumbens and our prefrontal cortex dictates our motor movement, such as deciding whether or not to taking another bite of that delicious chocolate cake. The prefrontal cortex also activates hormones that tell our body: “Hey, this cake is really good. And I’m going to remember that for the future.”
Not all foods are equally rewarding, of course. Most of us prefer sweets over sour and bitter foods because, evolutionarily, our mesolimbic pathway reinforces that sweet things provide a healthy source of carbohydrates for our bodies. When our ancestors went scavenging for berries, for example, sour meant “not yet ripe,” while bitter meant “alert – poison!”
Fruit is one thing, but modern diets have taken on a life of their own. A decade ago, it was estimated that the average American consumed 22 teaspoons of added sugar per day, amounting to an extra 350 calories; it may well have risen since then. A few months ago, one expert suggested that the average Briton consumes 238 teaspoons of sugar each week.
Today, with convenience more important than ever in our food selections, it’s almost impossible to come across processed and prepared foods that don’t have added sugars for flavour, preservation, or both.
These added sugars are sneaky – and unbeknown to many of us, we’ve become hooked. In ways that drugs of abuse – such as nicotine, cocaine and heroin – hijack the brain’s reward pathway and make users dependent, increasing neuro-chemical and behavioural evidence suggests that sugar is addictive in the same way, too.

Sugar addiction is real

Anyone who knows me also knows that I have a huge sweet tooth. I always have. My friend and fellow graduate student Andrew is equally afflicted, and living in Hershey, Pennsylvania – the “Chocolate Capital of the World” – doesn’t help either of us. But Andrew is braver than I am. Last year, he gave up sweets for Lent. “The first few days are a little rough,” Andrew told me. “It almost feels like you’re detoxing from drugs. I found myself eating a lot of carbs to compensate for the lack of sugar.”
There are four major components of addiction: bingeing, withdrawal, craving, and cross-sensitisation (the notion that one addictive substance predisposes someone to becoming addicted to another). All of these components have been observed in animal models of addiction – for sugar, as well as drugs of abuse.
A typical experiment goes like this: rats are deprived of food for 12 hours each day, then given 12 hours of access to a sugary solution and regular chow. After a month of following this daily pattern, rats display behaviours similar to those on drugs of abuse. They’ll binge on the sugar solution in a short period of time, much more than their regular food. They also show signs of anxiety and depression during the food deprivation period. Many sugar-treated rats who are later exposed to drugs, such as cocaine and opiates, demonstrate dependent behaviours towards the drugs compared to rats who did not consume sugar beforehand.
Like drugs, sugar spikes dopamine release in the nucleus accumbens. Over the long term, regular sugar consumption actually changes the gene expression and availability of dopamine receptors in both the midbrain and frontal cortex. Specifically, sugar increases the concentration of a type of excitatory receptor called D1, but decreases another receptor type called D2, which is inhibitory. Regular sugar consumption also inhibits the action of the dopamine transporter, a protein which pumps dopamine out of the synapse and back into the neuron after firing.
In short, this means that repeated access to sugar over time leads to prolonged dopamine signalling, greater excitation of the brain’s reward pathways and a need for even more sugar to activate all of the midbrain dopamine receptors like before. The brain becomes tolerant to sugar – and more is needed to attain the same “sugar high.”

Sugar withdrawal is also real

Although these studies were conducted in rodents, it’s not far-fetched to say that the same primitive processes are occurring in the human brain, too. “The cravings never stopped, [but that was] probably psychological,” Andrew told me. “But it got easier after the first week or so.”
In a 2002 study by Carlo Colantuoni and colleagues of Princeton University, rats who had undergone a typical sugar dependence protocol then underwent “sugar withdrawal.” This was facilitated by either food deprivation or treatment with naloxone, a drug used for treating opiate addiction which binds to receptors in the brain’s reward system. Both withdrawal methods led to physical problems, including teeth chattering, paw tremors, and head shaking. Naloxone treatment also appeared to make the rats more anxious, as they spent less time on an elevated apparatus that lacked walls on either side.
Similar withdrawal experiments by others also report behaviour similar to depression in tasks such as the forced swim test. Rats in sugar withdrawal are more likely to show passive behaviours (like floating) than active behaviours (like trying to escape) when placed in water, suggesting feelings of helplessness.
A new study published by Victor Mangabeira and colleagues in this month’s Physiology & Behavior reports that sugar withdrawal is also linked to impulsive behaviour. Initially, rats were trained to receive water by pushing a lever. After training, the animals returned to their home cages and had access to a sugar solution and water, or just water alone. After 30 days, when rats were again given the opportunity to press a lever for water, those who had become dependent on sugar pressed the lever significantly more times than control animals, suggesting impulsive behaviour.
These are extreme experiments, of course. We humans aren’t depriving ourselves of food for 12 hours and then allowing ourselves to binge on soda and doughnuts at the end of the day. But these rodent studies certainly give us insight into the neuro-chemical underpinnings of sugar dependence, withdrawal, and behaviour.
Through decades of diet programmes and best-selling books, we’ve toyed with the notion of “sugar addiction” for a long time. There are accounts of those in “sugar withdrawal” describing food cravings, which can trigger relapse and impulsive eating. There are also countless articles and books about the boundless energy and new-found happiness in those who have sworn off sugar for good. But despite the ubiquity of sugar in our diets, the notion of sugar addiction is still a rather taboo topic.
Are you still motivated to give up sugar? You might wonder how long it will take until you’re free of cravings and side-effects, but there’s no answer – everyone is different and no human studies have been done on this. But after 40 days, it’s clear that Andrew had overcome the worst, likely even reversing some of his altered dopamine signalling. “I remember eating my first sweet and thinking it was too sweet,” he said. “I had to rebuild my tolerance.”
And as regulars of a local bakery in Hershey – I can assure you, readers, that he has done just that.
Jordan Gaines Lewis is a Neuroscience Doctoral Candidate at Penn State College of Medicine

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Yes, that 3D-printed mansion is safe to live in

February 13, 2015 / / 0 Comments


WinSun claims that their new 3D printed five-story building is the tallest of its kind in the world. Credit: 3ders.org
WinSun claims that their new 3D printed five-story building is the tallest of its kind in the world. 


Excerpt from

Back in April, a team of Chinese construction workers used a 3D printer to construct houses. By day’s end, there were 10 standing. They were compact and fairly bare bones — nothing much to look at besides the “wow!” factor of there being as many as — count them — 10. But this time around, those same builders have taken the wraps off an achievement that’s roundly more impressive.
In Suzhou Industrial Park, adjacent to Shanghai, stands a five-story structure that the WinSun Decoration Design Engineering firm claims is “the world’s tallest 3D-printed building.” Next to it is the equally massive 3D-printed mansion, which measures 11,840 square feet. Like the previous buildings, the walls are comprised of a mix of concrete and recycled waste materials, such as glass and steel, and formed layer by printed layer. The company stated that the total cost for the mansion was roughly $161,000. 
In a broader sense, this latest feat is yet another indication of how rapidly additive manufacturing techniques are advancing. Once used primarily as a means to quickly render miniature model versions of products, the technology has reached a point where large-scale printers are now capable of making life-sized working creations, such as automobiles, in mere days. For instance, it took less than 48 hours for start-up Local Motors to print a two-seater called the Strati into existence and drive it off the showroom.
Many of these designs, however, typically don’t amount to much beyond being passion projects meant to push 3D printing into new frontiers and drum up some publicity along the way. One example of this is the massive 3D Print Canal House that’s being constructed entirely on-site along a canal in Amsterdam, a process that’s slated to take longer and is less feasible than standard construction, Phil Reeves of UK-based 3D printing research firm Econolyst recently told CNN.
More promising, though, is a system developed by Behrokh Khoshnevis, a University of Southern California engineering professor. His concept machine, called Contour Crafting, involves a clever combination of mechanical cranes and 3D layering to print and assemble entire homes simultaneously — complete with insulation and indoor plumbing — in less than a day. 

Assembling 3D printed buildings is quite similar to erecting prefab homes. Credit: 3ders.org
Assembling 3D printed buildings is quite similar to erecting prefab homes. 


The approach employed by WinSun isn’t anywhere near that level of sophistication, but it may well prove to be the most practical – at least thus far. There is some labor and equipment costs that comes from trucking in and piecing together the various sections on-site, though the manner in which it all comes together is comparable to the ease of prefab assembly. It’s also reportedly greener thanks to the addition of recycled materials. 
To pitch the advantages of their technology, the company held a news conference to announce that they had taken on orders for 20,000 smaller units as well as highlight some significant cost-cutting figures. According toindustry news site 3Der:
The sheer size of the printer allows for a 10x increase in production efficiency. WinSun estimates that 3D printing technology can save between 30 and 60 percent of building materials and shortens production times by 50 to even 70 percent, while decreasing labor costs by 50 up to even 80 percent. Future applications include 3D printed bridges or tall office buildings that can be built right on site.
WinSun did not respond to a request to disclose how they arrived at those numbers, but Enrico Dini, an Italian civil engineer and chairman of competing start-up Monolite, says that he suspects the calculations may be a tad bit inflated. Still, he emphasized that his own data does back up the claim that, compared to conventional methods, layering may boost overall efficiency. 
“It would be very difficult to fabricate such large sections with traditional concrete casting,” he says. “With 3D printing, you have a lot less waste because you’re only printing out as much material as you need and you can custom shape whole sections on the spot, which can be a big challenge.”

WinSuns 3D printed villa has several rooms and has been deemed to be up to Chinas national safety standards. Credit: 3ders.org
WinSun’s 3D-printed villa has several rooms and has been deemed to be up to China’s national safety standards.

One major concern is whether these large-scale dwellings can hold up over time against the elements. According to 3Der, Ma Rongquan, chief engineer of China Construction Bureau, inspected the building’s structural integrity and found them to be up to code, but was careful to note that state officials have yet to establish specific criteria for assessing the long-term safety of 3D printed architecture.   
And as Dini, who supports the technology, points out, there is the possibility that the use of additive manufacturing may pose some degree of risk. “The only issue is that as the layers of concrete are bonded together, they’re drying at slightly different rates and that’s not very ideal,” he explains. “So there’s maybe a higher chance of it fracturing at the contact point if there’s a strong enough force at play.” 
Regardless, Dini says he’d feel completely safe going inside any floor of either building since construction materials used today are likely to contain special additives to enhance strength and resistance. One such formulation, fiber-reinforced Ductal, has been shown in some tests to be 10 times stronger and last twice as long as regular concrete. He stressed that walls should also be tested to ensure that other properties, such as acoustics, ventilation and thermal insulations are on par with existing buildings.
“In Italy, building standards are extremely strict,” he noted. “But I can’t say I can say the same about China.”

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10 Mysterious Biblical Figures No One Can Explain

February 3, 2015 / / 0 Comments






listverse.com

The canonical Bible is filled with mysterious characters, many of whom drop in for a cameo, do their thing, and then slide out, never to be heard from again. Some are merely extras, but some have a contextual presence that begs further examination. And some are, well, just weird.

10  Melchizedek

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Probably the single most mysterious figure in the Bible, Melchizedek was a priest-king of Salem (later known as Jerusalem) in the time of Abram (Abraham), suggesting a religious organization, complete with ritual and hierarchy, that predated the Jewish nation and their priestly lineage from the tribe of Levi. He is only portrayed as active in one passage, although he is alluded to once in Psalms, and several times in the New Testament’s Epistle to the Hebrews.
Some Jewish disciplines insist that Melchizedek was Shem, Noah’s son. He is thought of, in Christian circles, as a proto-messiah, embodying certain traits later given to Christ. New Testament writings assert that Christ was “a priest forever in the order of Melchizedek,” indicating an older and deeper covenant with God than the Abrahamic-Levite lineage.
Hebrews 7, though presents him in a more unusual light. In verses 3 and 4:
“Without father, without mother, without descent, having neither beginning of days, nor end of life; but made like unto the Son of God; abideth a priest continually. Now consider how great this man was, unto whom even the patriarch Abraham gave the tenth of the spoils.”
Not only do these verses grant Melchizedek a hierarchical level above the most important Jewish patriarch, they assign him mystical qualities. Some take this to mean an earlier incarnation of Christ. Others see it as an ancient manifestation of the Holy Spirit. His identity, role, and theological function have long been debated.
The paucity of scriptural references have added to the mystery, making him a somewhat spectral figure. As such, newer spiritual traditions, as well as New Age quacks, have taken liberties with his persona. Gnostics insisted he became Jesus, and he is cited as a high-level priest in Masonic and Rosicrucian lore. Joseph Smith wrote that he was the greatest of all prophets, and Mormons still trace their priesthood back to him. The Urantia, a 20th-century pseudo-Bible that claims to merge religion, philosophy, and science, insists he’s the first in an evolutionary succession of deification manifestations, with Abraham being his first convert.
There is even a school of thought that Melchizedek is a title or assumed character name, sort of a theological 007, played by a series of Judeo-Christian James Bonds. 

The lore of Melchizedek is confusing but deep and fascinating. Apocryphal books give us more details, some cryptic, some relatively mundane. The Second Book of Enoch is particularly informative, insisting Melchizedek was born of a Virgin. When his mother Sophonim (the wife of Noah’s brother Nir) died in childbirth, he sat up, clothed himself, and sat beside her corpse, praying and preaching. After 40 days, he was taken by an archangel to the Garden of Eden, protected by angels and avoiding the Great Flood without passage on Uncle Noah’s ark.

9  Cain’s Wife

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Cain was, according to Genesis, the first human ever born. He later killed his younger brother Abel in a hissy fit over his sacrifice of meat being more favored than Cain’s sacrificial fruit basket. God put a mark on Cain and cursed the ground he farmed, forcing him into a life as a wandering fugitive. 

That part of the story is fairly well known. Later, though, we read that he settled in the Land of Nod, and, all of a sudden, he has a wife. Absolutely nothing else is mentioned about her. We don’t even know where she came from. In fact, the question of where Cain got his wife, when his immediate family were apparently the only people in the world, has sent many a perceptive young Sunday schooler down the road of skepticism. 

Some have posited a mysterious other tribe of people, maybe created after Adam and Eve, maybe even another race or species. But the standard response is that Adam and Eve had many other sons and daughters to populate the Earth. The only way to keep the human race going would be to mate with siblings, nieces, nephews, and cousins. 

In fact, though the Holy Bible is silent on her identity, the apocryphal Book of Jubilees tells us exactly who was Cain’s wife: his sister Awan, who bore his son Enoch.

8  Joseph Barsabbas

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After Judas Iscariot turned in his resignation by selling out his boss, Jesus’s disciples rushed to fill the open position and bring the number back up to a more theologically apt 12. The remaining disciples, including the newly convinced Thomas, looked over the candidates from the 120 or so adherents who followed Jesus. Then they cast lots to pick who would fill the position. 

It went to Matthias, a fairly mysterious character himself. We don’t know where he came from or his previous occupation. Some think he was actually the diminutive Zacchaeus, the tax collector who climbed a sycamore tree to get a better glimpse of Jesus’s ride on the donkey.
The man who lost out was Joseph Barsabbas, also known as Joseph Justus. We know nothing solid about him, even less than we know about Matthias.
There is, however, one bit of interesting speculation. A list of names presented in Mark 6:3 includes some of Christ’s earliest and most loyal adherents. One of these is a man named Joses, and another is James the Just. Biblical scholar Robert Eisenman suggests that James carried on Jesus’s work, and the writer of the Book of Acts assigned him an alias to minimize his importance.

7  The Beloved Disciple

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In the Gospel of John, several references are made to “the disciple whom Jesus loved.” This particular favorite is present at the Last Supper, the crucifixion, and after the resurrection. The writer of the Gospel of John even states that the testimony of this disciple is the basis for the text. But there is considerable debate over the identity of this mystery figure.
The most obvious nominee is John the Apostle, one of Christ’s inner circle of 12 and the namesake of the Gospel. But none of the 12 apostles were present at the crucifixion, so that crosses him off the list. Lazarus, resurrected by Christ, is also considered. He seems to have been present at the cited events and is referred to specifically, in the story of His death and resurrection, as “he whom Thou lovest.”
Mary Magdalene, Judas, Jesus’s brother James, or an unnamed disciple, possibly even a Roman or governmental official, have all been considered. There is even a school of thought that John is an interactive gospel, with the reader being the beloved disciple.

6  Simon Magus

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“Simony” is the selling of church position or privilege. It is named for Simon Magus, or Simon the Magician, who makes only a brief appearance in the Bible, in Acts 8:9–24. Simon has since become synonymous with heretical thought, and religious exploitation.
He is presented as a powerful magician with a large following of in Samaria, who converts to Christianity and wishes to learn from apostles Peter and Phillip. When he sees the gifts of the Holy Spirit, including speaking in tongues and an ecstatic spiritual state, he offers the men money if they will give him the secret to passing these gifts to others. They are not amused.
Apocryphal texts reveal quite a bit more, like his alleged ability to levitate and even fly, emphasizing that he was something akin to a cult leader in his hometown. It is suggested that his conversion is more for economic purposes than spiritual, and he set himself up as a messianic figure himself, competing for the Jesus dollar with his own homespun theology.
He is thought by some to be a founder of Gnosticism, a patchwork of various religious systems that relied heavily on Judaic and Christian symbolism.

5  Onan

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Not unlike Simon Magus, Onan’s brief appearance inspired a name for a particular action.
He was the second son of Abraham’s grandson Judah, the patriarch and namesake of one of the 12 tribes of Israel. His older brother, Er (yes, just “Er”) was “wicked in the sight of the Lord,” so God killed him. What he did to deserve such an execution remains a mystery.
Tradition at the time dictated that Er’s widow, Tamar, become Onan’s wife. Onan had to impregnate her to keep the lineage alive, but he was not as wild about the idea. Maybe it was the thought of impending fatherhood, or Tamar just wasn’t his type. So, taking matters into his own hands, he committed the first recorded act of coitus interruptus. Or, as Genesis 38:9 so poetically put it: “And Onan knew that the seed should not be his; and it came to pass, when he went in unto his brother’s wife, that he spilled it on the ground, lest that he should give seed to his brother.” God was displeased and slew Onan.
The whole tale gets even more sordid. Onan had a younger brother, Shelah. Customarily, he would have been next in line to impregnate Tamar, but Judah forbade it. Tamar, rather than graciously accepting forced spinsterhood, seduced Judah and (became pregnant) by the old man. Judah fathered twins Zerah and Perez, the latter of whom was listed by Matthew as an ancestor of Jesus’s earthly father Joseph...
Some have even suggested that Onan’s death warns that sex is meant only for purposes of reproduction, and not for pleasure.

4  Nicodemus

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Nicodemus was a member of the Sanhedrin, a council of men who ruled on Jewish law and governance. He became a friend, follower, and intellectual foil for Jesus, whose egalitarian teachings often ran counter to the Sanhedrin’s rigid decrees. He was also a Pharisee, a leader within the Jewish community who toadied up to the Roman government at the time of Christ’s arrest and subsequent crucifixion.
He is mentioned three times in the New Testament, all in the Gospel of John. He subtly defends Jesus as the Pharisees discuss His impending arrest. Later, he helps prepare Jesus’s body for burial, indicating he had become an adherent to Christ and His teachings.
The first time he is mentioned, however, is in dialogue with Jesus, and these conversations reveal some of the most important aspects of Christian theology, such as the notion of being “born again” and the most famous reference to the divinity of Christ, John 3:16: “For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.”
This detailed conversation explores the divide between the Old Covenant’s dogmatic and exclusive Jewish Law and the New Covenant’s spiritually inclusive concepts. But for a vital contributor to such an important passage of the New Testament, Nicodemus remains a mysterious figure. Some scholars have suggested he may be Nicodemus ben Gurion, a Talmudic figure of wealth and mystical power. Christian tradition suggest he was martyred, and he is venerated as a saint. His name has come to be synonymous with seekers of the truth and is used as a character in many works of biblically inspired fiction.

3  James The Just

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He is considered, next to Paul and Peter, the most important apostolic figure in the Church’s history. The Book of Acts specifically names him the head of the Christian church in Jerusalem, and he is frequently cited, both scripturally and apocryphally, as being consulted by both Paul and Peter. So who is he?
Traditionally, he is thought of as Jesus’s brother (or, more precisely, His half-brother). Jesus is listed, in the Gospels, as having siblings, some younger than Him. One was named James.
But James was a common name, and there are several mentioned in the Bible. Two of the 12 disciples were named James, but both are listed as having different fathers than Jesus, and neither went on to become James the Just. James the son of Zebedee went on to be known as James the Great, and James the son of Alphaeus was called James the Less.
It is known that he was a contemporary of Jesus, although he seems to have had no real inner-circle status during Christ’s ministry. The apocryphal Gospel of Thomas says Christ Himself designated James to lead the movement upon His death. The Apostle Paul initially seems respectful, even subservient, to “James the Lord’s brother,” calling him a “pillar” of the movement, even though he was later to disagree with him on matters of doctrine.
Some, though, have suggested the “brother” designation was spiritual, rather than physical. St. Jerome, among others, suggested that the doctrine of perpetual virginity indicated James could be a cousin, which, given the tribal associations and clannishness of the Jewish community of the time, seems valid. Such a relationship would indicate a certain social proximity without necessarily being a true sibling.

2  Simon The Zealot

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Of Christ’s 12 disciples, none are more mysterious than Simon the Zealot. His name was meant to differentiate him from Simon Peter and has come to symbolize, for some, that he was a member of a similarly named political movement that advocated Jewish defiance to Roman law. Some have speculated that he acted, within Christ’s inner circle, as a political adviser. His presence then indicated that Jesus had a revolutionary political agenda.
The truth is much less exciting. The “Zealot” movement did not take place until long after the time that Christ would have given Simon his sobriquet, and there has never been any serious evidence that Simon, despite the designation, was a political radical. The name, and the word upon which it is based, did not take on those aggressive undertones until the movement itself was in full swing. More than likely, Simon was given his name because of intense spiritual devotion, rather than any radical political stance.
Nothing else is known of him, at least not with any surety. The Catholic Encyclopedia mentions him as possibly being a brother or cousin of Jesus, with no real evidence. The Eastern Orthodox tradition says he developed his zeal when Jesus attended his wedding and changed water into wine. Some legends say he was martyred; the philosopher Justus Lipsius somehow got it into his head that he was sawed in half.

1  Og

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Cited twice specifically, but alluded to frequently in general terms, the Nephilim were a race of violent giants that lived in the pre-Flood world at the same time as humanity. Were they, as some suggest, the offspring of demons and human women? Fallen angels themselves? Or simply the descendants of Seth mentioned in the Dead Sea scrolls, a tribe of cranky cases cursed by God for their rebelliousness? Regardless, they evolved and became known by other names, like the Raphaim, and frequently battled humans for land and power.
The most storied of them was Og, the King of Bashan. He was killed, along with his entire army, and his kingdom was ransacked. All of the survivors—men, women, and children—were put to death, and the strongest and most powerful line of Nephilim descendants was eliminated. Some Nephilim bloodlines continued to do battle with the Israelites, though they were becoming less powerful and dying out. One tribe, the Anakim, allied themselves with the human tribes in Philistia. Goliath was thought to have been one of the last few descendants of the Nephilim.
Goliath’s height is given in the earliest manuscripts as 275 centimeters (9′). That’s hardly as awe-inspiring as the creature laying in Og’s bed, which measured, according to Deuteronomy, 400 centimeters (13′ 6″). That’s basically Yao Ming sitting on Shaquille O’Neal’s shoulders.
Biblically, descendants of the Nephilim could not have survived the Flood, even though Og and other giants are post-Flood figures. Some biblical literalists have attributed their later existence to the descendants of Noah’s family hooking up, once again, with demons. Or, being fallen angels and not human, they did survive the flood.
Jewish tradition gets deeper into information about the Nephilim and their descendants, going against the grain of the biblical account. It tells of Og booking passage on the Ark by promising to act as a slave to Noah and his family. Other accounts have him hanging on to the side of the Ark and riding the flood out rodeo-style.

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Study Suggests Baby Chicks Can Count! ~ Video

January 31, 2015 / / 0 Comments





Excerpt from nbcnews.com
By Tia Ghose, LiveScience



It's not just humans who can count: Newly published research suggests chicks seem to have a number sense, too. 

Scientists found that chicks seem to count upward, moving from left to right. They put smaller numbers on the left, and larger numbers on the right — the same mental representation of the number line that humans use. 

"Our results suggest a rethinking of the relationship between numerical abilities and verbal language, providing further evidence that language and culture are not necessary for the development of a mathematical cognition," said study lead author Rosa Rugani, a psychologist at the University of Padova in Italy.

The left-to-right way of thinking about ascending numbers seems to be embedded in people's mental representations of numbers, but it's not clear exactly why. Is it an artifact of some long-lost accident of history, or is it a fundamental aspect of the way the brain processes numbers? 

To help answer those questions, Rugani and her colleagues trained 3-day-old chicks to travel around a screen panel with five dots on it to get to a food treat behind it. This made the five-dot panel an anchor number that the chicks could use for comparison with other numbers. 

After the chicks learned that the five-dot panel meant food, the researchers removed that panel and then placed the chicks in front of two panels, one to the left and the other to the right, that each had two dots. The chicks tended to go to the left panel, suggesting that they mentally represent numbers smaller than five as being to the left of five. 

When the researchers put the chicks in front of two panels that each had eight dots, the chicks walked to the panel on the right. This suggests the chicks mentally represent numbers larger than five as being to the right of five, the researchers said. 

In a second experiment, the researchers repeated the whole process, but started with a panel that had 20 dots instead of five. They then added two other panels that had either eight or 32 dots. Sure enough, the baby chicks tended to go to the left when the screens had just eight dots, and to the right when they had 32 dots, according to the findings published in this week's issue of the journal Science. 

"I would not at all be surprised that the number spatial mapping is also found in other animals, and in newborn infants," Rugani said.



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Scientists Deem Asteroids Source of Earth’s Oceans

January 6, 2015 / / 0 Comments



Scientists theorize that asteroids, not comets, created Earth’s oceans with terrestrial water. Photo courtesy of NASA/Don Davis



Excerpt from newsok.com
Wayne Harris-Wyrick: Asteroid impacts that, today, could wipe out life on Earth, made it possible for life to flourish here in the first place by providing the precious water.
Water is rather ubiquitous, cosmically speaking, composed of hydrogen, the most common element in the universe, and oxygen, the third most common. In between is helium, a noble gas that doesn’t play well with other elements.
Water was present in great quantity 4.6 billion years ago when the planets of our solar system took shape. Venus, Earth and Mars formed with copious amounts of water. But Venus’ 900-degree atmosphere boiled it away and broke it down into its constituent parts or combined it with sulfur dioxide gas to create the planet’s thick sulfuric acid cloud cover. Mars’ small size meant weak gravity, so its atmosphere leaked into space, and its water evaporated, which it does with no air pressure above it, and also leaked into space.

Strong, active volcanism, aided by massive asteroid impacts boiled into space most, if not all, of remaining water on all three planets. And yet, today, three quarters of Earth is covered with water. Where did it come from?

For years, astronomers assumed that comets, the most common water-bearing objects in our solar system, brought the water to Earth. But comets formed much farther from the sun than Earth did. The isotopic composition of water differs with distance from the sun.

Thanks to the Rosetta spacecraft, we now know that cometary water doesn’t match terrestrial water. But asteroid water does. Today, asteroids are quite parched, but 4.5 billion years ago, when many asteroids impacted the planets and moons of the inner solar system, water represented a much larger fraction of their mass. And, it appears, they are the source of Earth’s oceans.

It turns out that asteroid impacts that, today, could wipe out life on Earth, made it possible for life to flourish here in the first place by providing the precious water.

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The Future of Technology in 2015?

January 2, 2015 / / 0 Comments




Excerpt from
cnet.com


The year gone by brought us more robots, worries about artificial intelligence, and difficult lessons on space travel. The big question: where's it all taking us?

Every year, we capture a little bit more of the future -- and yet the future insists on staying ever out of reach.
Consider space travel. Humans have been traveling beyond the atmosphere for more than 50 years now -- but aside from a few overnights on the moon four decades ago, we have yet to venture beyond low Earth orbit.
Or robots. They help build our cars and clean our kitchen floors, but no one would mistake a Kuka or a Roomba for the replicants in "Blade Runner." Siri, Cortana and Alexa, meanwhile, are bringing some personality to the gadgets in our pockets and our houses. Still, that's a long way from HAL or that lad David from the movie "A.I. Artificial Intelligence."
Self-driving cars? Still in low gear, and carrying some bureaucratic baggage that prevents them from ditching certain technology of yesteryear, like steering wheels.
And even when these sci-fi things arrive, will we embrace them? A Pew study earlier this year found that Americans are decidedly undecided. Among the poll respondents, 48 percent said they would like to take a ride in a driverless car, but 50 percent would not. And only 3 percent said they would like to own one.
"Despite their general optimism about the long-term impact of technological change," Aaron Smith of the Pew Research Center wrote in the report, "Americans express significant reservations about some of these potentially short-term developments" such as US airspace being opened to personal drones, robot caregivers for the elderly or wearable or implantable computing devices that would feed them information.
Let's take a look at how much of the future we grasped in 2014 and what we could gain in 2015.

Space travel: 'Space flight is hard'

In 2014, earthlings scored an unprecedented achievement in space exploration when the European Space Agency landed a spacecraft on a speeding comet, with the potential to learn more about the origins of life. No, Bruce Willis wasn't aboard. Nobody was. But when the 220-pound Philae lander, carried to its destination by the Rosetta orbiter, touched down on comet 67P/Churyumov-Gerasimenko on November 12, some 300 million miles from Earth, the celebration was well-earned.
A shadow quickly fell on the jubilation, however. Philae could not stick its first landing, bouncing into a darker corner of the comet where its solar panels would not receive enough sunlight to charge the lander's batteries. After two days and just a handful of initial readings sent home, it shut down. For good? Backers have allowed for a ray of hope as the comet passes closer to the sun in 2015. "I think within the team there is no doubt that [Philae] will wake up," lead lander scientist Jean-Pierre Bibring said in December. "And the question is OK, in what shape? My suspicion is we'll be in good shape."
The trip for NASA's New Horizons spacecraft has been much longer: 3 billion miles, all the way to Pluto and the edge of the solar system. Almost nine years after it left Earth, New Horizons in early December came out of hibernation to begin its mission: to explore "a new class of planets we've never seen, in a place we've never been before," said project scientist Hal Weaver. In January, it will begin taking photos and readings of Pluto, and by mid-July, when it swoops closest to Pluto, it will have sent back detailed information about the dwarf planet and its moon, en route to even deeper space.


Also in December, NASA made a first test spaceflight of its Orion capsule on a quick morning jaunt out and back, to just over 3,600 miles above Earth (or approximately 15 times higher than the International Space Station). The distance was trivial compared to those those traveled by Rosetta and New Horizons, and crewed missions won't begin till 2021, but the ambitions are great -- in the 2030s, Orion is expected to carry humans to Mars.
In late March 2015, two humans will head to the ISS to take up residence for a full year, in what would be a record sleepover in orbit. "If a mission to Mars is going to take a three-year round trip," said NASA astronaut Scott Kelly, who will be joined in the effort by Russia's Mikhail Kornienko, "we need to know better how our body and our physiology performs over durations longer than what we've previously on the space station investigated, which is six months."
There were more sobering moments, too, in 2014. In October, Virgin Galactic's sleek, experimental SpaceShipTwo, designed to carry deep-pocketed tourists into space, crashed in the Mojave Desert during a test flight, killing one test pilot and injuring the other. Virgin founder Richard Branson had hoped his vessel would make its first commercial flight by the end of this year or in early 2015, and what comes next remains to be seen. Branson, though, expressed optimism: "Space flight is hard -- but worth it," he said in a blog post shortly after the crash, and in a press conference, he vowed "We'll learn from this, and move forward together." Virgin Galactic could begin testing its next spaceship as soon as early 2015.
The crash of SpaceShipTwo came just a few days after the explosion of an Orbital Sciences rocket lofting an unmanned spacecraft with supplies bound for the International Space Station. And in July, Elon Musk's SpaceX had suffered the loss of one of its Falcon 9 rockets during a test flight. Musk intoned, via Twitter, that "rockets are tricky..."
Still, it was on the whole a good year for SpaceX. In May, it unveiled its first manned spacecraft, the Dragon V2, intended for trips to and from the space station, and in September, it won a $2.6 billion contract from NASA to become one of the first private companies (the other being Boeing) to ferry astronauts to the ISS, beginning as early as 2017. Oh, and SpaceX also has plans to launch microsatellites to establish low-cost Internet service around the globe, saying in November to expect an announcement about that in two to three months -- that is, early in 2015.
One more thing to watch for next year: another launch of the super-secret X-37B space place to do whatever it does during its marathon trips into orbit. The third spaceflight of an X-37B -- a robotic vehicle that, at 29 feet in length, looks like a miniature space shuttle -- ended in October after an astonishing 22 months circling the Earth, conducting "on-orbit experiments."

Self-driving cars: Asleep at what wheel?

Spacecraft aren't the only vehicles capable of autonomous travel -- increasingly, cars are, too. Automakers are toiling toward self-driving cars, and Elon Musk -- whose name comes up again and again when we talk about the near horizon for sci-fi tech -- says we're less than a decade away from capturing that aspect of the future. In October, speaking in his guise as founder of Tesla Motors, Musk said: "Like maybe five or six years from now I think we'll be able to achieve true autonomous driving where you could literally get in the car, go to sleep and wake up at your destination." (He also allowed that we should tack on a few years after that before government regulators give that technology their blessing.)
Prototype, unbound: Google's ride of the future, as it looks today Google
That comment came as Musk unveiled a new autopilot feature -- characterizing it as a sort of super cruise control, rather than actual autonomy -- for Tesla's existing line of electric cars. Every Model S manufactured since late September includes new sensor hardware to enable those autopilot capabilities (such as adaptive cruise control, lane-keeping assistance and automated parking), to be followed by an over-the-air software update to enable those features.
Google has long been working on its own robo-cars, and until this year, that meant taking existing models -- a Prius here, a Lexus there -- and buckling on extraneous gear. Then in May, the tech titan took the wraps off a completely new prototype that it had built from scratch. (In December, it showed off the first fully functional prototype.) It looked rather like a cartoon car, but the real news was that there was no steering wheel, gas pedal or brake pedal -- no need for human controls when software and sensors are there to do the work.
Or not so fast. In August, California's Department of Motor Vehicles declared that Google's test vehicles will need those manual controls after all -- for safety's sake. The company agreed to comply with the state's rules, which went into effect in September, when it began testing the cars on private roads in October.
Regardless of who's making your future robo-car, the vehicle is going to have to be not just smart, but actually thoughtful. It's not enough for the car to know how far it is from nearby cars or what the road conditions are. The machine may well have to make no-win decisions, just as human drivers sometimes do in instantaneous, life-and-death emergencies. "The car is calculating a lot of consequences of its actions," Chris Gerdes, an associate professor of mechanical engineering, said at the Web Summit conference in Dublin, Ireland, in November. "Should it hit the person without a helmet? The larger car or the smaller car?"

Robots: Legging it out

So when do the robots finally become our overlords? Probably not in 2015, but there's sure to be more hand-wringing about both the machines and the artificial intelligence that could -- someday -- make them a match for homo sapiens. At the moment, the threat seems more mundane: when do we lose our jobs to a robot?
The inquisitive folks at Pew took that very topic to nearly 1,900 experts, including Vint Cerf, vice president at Google; Web guru Tim Bray; Justin Reich of Harvard University's Berkman Center for Internet & Society; and Jonathan Grudin, principal researcher at Microsoft. According to the resulting report, published in August, the group was almost evenly split -- 48 percent thought it likely that, by 2025, robots and digital agents will have displaced significant numbers of blue- and white-collar workers, perhaps even to the point of breakdowns in the social order, while 52 percent "have faith that human ingenuity will create new jobs, industries, and ways to make a living, just as it has been doing since the dawn of the Industrial Revolution."


Still, for all of the startling skills that robots have acquired so far, they're often not all there yet. Here's some of what we saw from the robot world in 2014:
Teamwork: Researchers at the École Polytechnique Fédérale De Lausanne in May showed off their "Roombots," cog-like robotic balls that can join forces to, say, help a table move across a room or change its height.
A sense of balance: We don't know if Boston Dynamics' humanoid Atlas is ready to trim bonsai trees, but it has learned this much from "The Karate Kid" (the original from the 1980s) -- it can stand on cinder blocks and hold its balance in a crane stance while moving its arms up and down.
Catlike jumps: MIT's cheetah-bot gets higher marks for locomotion. Fed a new algorithm, it can run across a lawn and bound like a cat. And quietly, too. "Our robot can be silent and as efficient as animals. The only things you hear are the feet hitting the ground," MIT's Sangbae Kim, a professor of mechanical engineering, told MIT News. "This is kind of a new paradigm where we're controlling force in a highly dynamic situation. Any legged robot should be able to do this in the future."
Sign language: Toshiba's humanoid Aiko Chihira communicated in Japanese sign language at the CEATEC show in October. Her rudimentary skills, limited for the moment to simple messages such as signed greetings, are expected to blossom by 2020 into areas such as speech synthesis and speech recognition.
Dance skills: Robotic pole dancers? Tobit Software brought a pair, controllable by an Android smartphone, to the Cebit trade show in Germany in March. More lifelike was the animatronic sculpture at a gallery in New York that same month -- but what was up with that witch mask?
Emotional ambition: Eventually, we'll all have humanoid companions -- at least, that's always been one school of thought on our robotic future. One early candidate for that honor could be Pepper, from Softbank and Aldebaran Robotics, which say the 4-foot-tall Pepper is the first robot to read emotions. This emo-bot is expected to go on sale in Japan in February.

Ray guns: Ship shape

Damn the photon torpedoes, and full speed ahead. That could be the motto for the US Navy, which in 2014 deployed a prototype laser weapon -- just one -- aboard a vessel in the Persian Gulf. Through some three months of testing, the device "locked on and destroyed the targets we designated with near-instantaneous lethality," Rear Adm. Matthew L. Klunder, chief of naval research, said in a statement. Those targets were rather modest -- small objects mounted aboard a speeding small boat, a diminutive Scan Eagle unmanned aerial vehicle, and so on -- but the point was made: the laser weapon, operated by a controller like those used for video games, held up well, even in adverse conditions.

Artificial intelligence: Danger, Will Robinson?

What happens when robots and other smart machines can not only do, but also think? Will they appreciate us for all our quirky human high and low points, and learn to live with us? Or do they take a hard look at a species that's run its course and either turn us into natural resources, "Matrix"-style, or rain down destruction?
laser-weapon-system-on-uss-ponce.jpg
When the machines take over, will they be packing laser weapons like this one the US Navy just tried out? John F. Williams/US Navy
As we look ahead to the reboot of the "Terminator" film franchise in 2015, we can't help but recall some of the dire thoughts about artificial intelligence from two people high in the tech pantheon, the very busy Musk and the theoretically inclined Stephen Hawking.
Musk himself more than once in 2014 invoked the likes of the "Terminator" movies and the "scary outcomes" that make them such thrilling popcorn fare. Except that he sees a potentially scary reality evolving. In an interview with CNBC in June, he spoke of his investment in AI-minded companies like Vicarious and Deep Mind, saying: "I like to just keep an eye on what's going on with artificial intelligence. I think there is potentially a dangerous outcome."
He has put his anxieties into some particularly colorful phrases. In August, for instance, Musk tweeted that AI is "potentially more dangerous than nukes." And in October, he said this at a symposium at MIT: "With artificial intelligence, we are summoning the demon. ... You know all those stories where there's the guy with the pentagram and the holy water and he's like... yeah, he's sure he can control the demon, [but] it doesn't work out."
Musk has a kindred spirit in Stephen Hawking. The physicist allowed in May that AI could be the "biggest event in human history," and not necessarily in a good way. A month later, he was telling John Oliver, on HBO's "Last Week Tonight," that "artificial intelligence could be a real danger in the not too distant future." How so? "It could design improvements to itself and outsmart us all."
But Google's Eric Schmidt, is having none of that pessimism. At a summit on innovation in December, the executive chairman of the far-thinking tech titan -- which in October teamed up with Oxford University to speed up research on artificial intelligence -- said that while our worries may be natural, "they're also misguided."

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Did drought doom the Mayan Empire? New evidence from Belize’s ‘Blue Hole’

December 30, 2014 / / 0 Comments




Minerals taken from lagoons reveal a century-long drought occurred between A.D. 800 and A.D. 900, right when the Mayan civilization disintegrated.

Excerpt from Livescience.com

By Tia Ghose  


Drought may have driven the ancient Mayan Empire to collapse, new research suggests.

Minerals taken from Belize's famous underwater cave, known as the Blue Hole, as well as lagoons nearby, show that an extreme, century-long drought occurred between A.D. 800 and A.D. 900, right when the Mayan civilization disintegrated. After the rains returned, the Mayans moved north — but they disappeared again a few centuries later, and that disappearance occurred at the same time as another dry spell, the sediments reveal. 

Rise and decline

From A.D. 300 to A.D. 700, the Mayan civilization flourished in the Yucatan peninsula. These ancient Mesoamericans built stunning pyramids, mastered astronomy, and developed both a hieroglyphic writing system and a calendar system, which is famous for allegedly predicting that the world would end in 2012.


But in the centuries after A.D. 700, the civilization's building activities slowed and the culture descended into warfare and anarchy. Historians have speculatively linked that decline with everything from the ancient society's fear of malevolent spirits to deforestation completed to make way for cropland to the loss of favored foods, such as the Tikal deer.

The evidence for a drought has been growing in recent years: Since at least 1995, scientists have been looking more closely at the effects of drought. A 2012 study in the journal Science analyzed a 2,000-year-old stalagmite from a cave in southern Belize and found that sharp decreases in rainfall coincided with periods of decline in the culture. But that data came from just one cave, which meant it was difficult to make predictions for the area as a whole, Droxler said.

The main driver of this drought is thought to have been a shift in the intertropical convergence zone (ITCZ), a weather system that generally dumps water on tropical regions of the world while drying out the subtropics. During summers, the ITCZ pelts the Yucatan peninsula with rain, but the system travels farther south in the winter. Many scientists have suggested that during the Mayan decline, this monsoon system may have missed the Yucatan peninsula altogether.

Deep history

The team found that during the period between A.D. 800 and A.D. 1000, when the Mayan civilization collapsed, there were just one or two tropical cyclones every two decades, as opposed to the usual five or six. After that, the Maya moved north, building at sites such as Chichen Itza, in what is now Mexico.

But the new results also found that between A.D. 1000 and A.D. 1100, during the height of the Little Ice Age, another major drought struck. This period coincides with the fall of Chichen Itza.

The findings strengthen the case that drought helped usher in the long decline of the Mayan culture.


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Asteroid Mining: Not as Crazy as it Sounds

November 21, 2014 / / 0 Comments


https://i0.wp.com/www.geologyforinvestors.com/wp-content/uploads/DSI-Firefly-concept_BV-21-01-13.jpg?resize=640%2C360
Concept model of the FireFly Design (Image credit: Deep Space Industries / Bryan Versteeg.


Excerpt from geologyforinvestors.com

At first glance it sounds ridiculous. Why would anyone consider mining in space when even the largest Earth-based mining operations seem to have trouble managing costs? After all, mid-grade and marginal deposits seem to have trouble finding any money and the process of moving a project from prospect to mine can take decades and cost hundreds of million of dollars. I’ll be the first to admit that the whole idea of asteroid mining was initially right up there with Star Trek-style transporters and desktop cold fusion, but a few recent events have piqued my curiosity on the subject. Allow me to elaborate.

First, one of the many items that was lost back in October, 2014 when the Antares rocket was destroyed was the Arkyd 3 satellite. Arkyd 3 is a testing platform designed by Planetary Resources, otherwise known as “the asteroid mining company”. Apparently these guys aren’t just doing interviews: There is actual work going on here. A re-built Arkyd 3 is scheduled for launch in about 9 months.
Second, the recent landing of the Philae spacecraft on comet 67P stirred all of our imaginations in a way that was reminiscent of the moon landing, first shuttle launch or first Mars rover. If we can effectively land a bullet on a bullet 500 million miles away from Earth, then the idea of grabbing a near-earth asteroid doesn’t sound nearly as crazy. The economics might still seem crazy, but the technology – not so much.

As it turns out, there are three groups currently working on a long term strategy to gather resources from space. Two are private companies and the third is NASA. All have different approaches, but their end games are largely the same.

What Asteroids? What Resources?

Asteroid miners are seeking out near-earth asteroids. There are over 11,000 known near-earth asteroids which are considered to be left-overs from the formation of the solar system. These bodies can be composed of ice, silicate minerals, carbonaceous minerals and metals.

Ice or water on these bodies is one of the most significant potential resources. Solar panels on spacecraft can provide the power to simply convert water to hydrogen and oxygen for fuel. Considering that it costs from $5,000-25,000+ per kg to ferry items into space, the idea of harvesting resources needed in space doesn’t sound like such a bad idea. In fact, the groups involved are primarily focused on gathering the resources needed for space exploration and development. Gathering resources to send back to earth is a much longer term goal and arguably may never be economic.

Groups Involved

Currently there are two private companies pursuing asteroid mining; Planetary Resources and Deep Space Industries. NASA is also involved on several levels and has awarded contracts to several companies including both Planetary Resources and Deep Space Industries for studies relating to relating to asteroid redirection.


Deep Space Industries – Fire Fly/DragonFly/Harvestor

Deep Space Industries’ approach includes a series of compact spacecraft known as FireFlies (not to be confused with NASA’s FireFly Cubesat). The company plans to send them on one-way missions to gather information such as size, shape, density and composition of asteroids of interest. Their longer term plan includes the development of a spacecraft known as the “Dragonfly” which will capture asteroids to return for analysis and to test processing methods and the “Harvestors” which will collect material for return to Earth’s orbit. The Harvestor class is meant for full-scale production for initial customers in space from collecting propellant for future space missions, manufacturing materials using extracted metals and radiation shielding. If costs begin to decrease over time they hope to be able to return these extracted commodities back to earth. DSI recently made the news when it partnered with another firm to build Bitcoin satellites as part of a proposed Bitcoin orbital satellite network.

NASA

NASA has commissioned a number of studies on the potential for asteroid mining and interactions as part of it’s Early Stage Innovation and Innovative Advanced Concepts (NIAC) directives. The Robotic Asteroid Prospector study determined that water and possibly Platinum Group Metals had the most economic potential for asteroid mining operations and presented some preliminary designed for water extraction.

NASA’s OSIRIS REx spacecraft is designed study the the near-Earth “Bennu” asteroid for more than a year with the primary goal of landing on the asteroid and retrieving a sample for return to Earth. OSIRIS-REx is scheduled for launch in September 2016.
NASA has been also been studying robotic mining for several years and holds annual competition where university students can build a mining robot.

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Scientists ‘confident’ comet lander will wake up

November 18, 2014 / / 0 Comments

ASSOCIATED PRESSA burst of sunshine in the spring could be just the wake-up call for Europe's comet lander.Scientists raised hopes Monday that as the Philae lander nears the sun its solar panel-powered battery will recharge, and the first spacecraft ...

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Gas falling under $3 per gallon nationwide

October 31, 2014 / / 0 Comments







NEW YORK (AP) — The sight is so surprising that Americans are sharing photos of it, along with all those cute Halloween costumes, sweeping vistas and special meals: The gas station sign, with a price under $3 a gallon.
"It's stunning what's happening here," says Tom Kloza, chief oil analyst at the Oil Price Information Service. "I'm a little bit shocked."
The national average price of gasoline has fallen 33 cents in October, landing Friday at $3.00, according to AAA. Kloza said the average will fall under $3 by early Saturday morning for the first time in four years.
When the national average crossed above $3 a gallon in December of 2010, drivers weren't sure they'd ever see $2.99 again. Global demand for oil and gasoline was rising as people in developing countries bought cars by the tens of millions and turmoil was brewing in the oil-rich Middle East.
Now demand isn't rising as fast as expected, drillers have learned to tap vast new sources of oil, particularly in the U.S., and crude continues to flow out of the Middle East.
Seasonal swings and other factors will likely send gas back over $3 sooner than drivers would like, but the U.S. is on track for the lowest annual average since 2010 — and the 2015 average is expected to be lower even still.
Trisha Pena of Hermitage, Tenn., recently paid $2.57 a gallon to fill up her Honda CRV. Like many around the country these days, she was so surprised and delighted by the price she took a photo and posted it on social media for her friends to see. "I can't remember the last time it cost under $30 to put 10 or 11 gallons in my tank," she said in an interview. "A month ago it was in the $3.50 range, and that's where it had been for a very long time."
Here are a few things to know about cheap gas:
— Crude prices came off the boil. Oil fell from $107 a barrel in June to near $81 because there's a lot of supply and weak demand. U.S. output has increased 70 percent since 2008, and supplies from Iraq and Canada have also increased. At the same time, demand is weaker than expected because of a sluggish global economy.
— In the past, a stronger economy in the U.S., the world's biggest consumer of oil and gasoline, typically meant rising fuel demand. No longer. Americans are driving more efficient vehicles and our driving habits are changing. Michael Sivak of the University of Michigan Transportation Research Institute calculates that the number of miles traveled per household and gallons of fuel consumed per household peaked in 2004.
— The drop from last year's average of $3.51 per gallon will save the typical U.S. household about $50 a month.
— The drop will save the U.S. economy $187 million a day, and also boost the profits of shippers, airlines, and any company that sends employees out on sales calls or for deliveries.
— It will take an extra 1.5 years to make purchasing a higher-priced, better-mileage Toyota Prius instead of a Toyota Corolla pay off.
— New York's average of $3.37 is the highest in the continental U.S. South Carolina and Tennessee are the lowest, with an average of $2.75.
— Politicians are either going to take the credit for lower gasoline prices or blame the other party for not helping them fall further. Don't listen. There are small things politicians can do over long time horizons, like implement fuel economy standards or ease drilling regulations, but the decline in prices is mainly due to market forces.

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Who is Jesus to Ascended Consciousness?

September 26, 2014 / / 0 Comments

By: Robert Burney"Jesus was a perfect Spiritual Being, a direct extension/manifestation from the ONENESS that is the God/Goddess Energy, having a human experience - just as we all are perfect Spiritual Beings having a human experience.""This Master Teacher was known as Jesus the Christ. The man Jesus was a perfect child of the Goddess and God energy - just as we all are perfect children of the God-Force!"This messenger added the most powerful ingredient to the process. He brought us our sec [...]

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