EBay Has Unexpected, Chilling Effect On Looting Of Antiquities, Archaelogist Finds

The daughter of a Peruvian artisan who specializes in the production of fake antiquities holds up an example. (Credit: Image courtesy of University of California - Los Angeles)

From Science Daily:

ScienceDaily (May 9, 2009) — Having worked for 25 years at fragile archaeological sites in Peru, UCLA archaeologist Charles "Chip" Stanish held his breath when the online auction house eBay launched more than a decade ago.

"My greatest fear was that the Internet would democratize antiquities trafficking, which previously had been a wealthy person's vice, and lead to widespread looting," said the UCLA professor of anthropology, who directs the UCLA Cotsen Institute of Archaeology.

Indeed, eBay has drastically altered the transporting and selling of illegal artifacts, Stanish writes in an article in the May/June issue of Archaeology, but not in the way he and other archaeologists had feared.

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Life’s First Spark Recreated In The Laboratory

A fundamental but elusive step in the early evolution of life
on Earth has been replicated in a laboratory.

From Wired Science:

Researchers synthesized the basic ingredients of RNA, a molecule from which the simplest self-replicating structures are made. Until now, they couldn’t explain how these ingredients might have formed.

“It’s like molecular choreography, where the molecules choreograph their own behavior,” said organic chemist John Sutherland of the University of Manchester, co-author of a study in Nature Wednesday.

RNA is now found in living cells, where it carries information between genes and protein-manufacturing cellular components. Scientists think RNA existed early in Earth’s history, providing a necessary intermediate platform between pre-biotic chemicals and DNA, its double-stranded, more-stable descendant.

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The Man Who Discovered Greenhouse Gases

Image: John Tyndall’s discovery that gases could trap heat provided the first hints of the mechanism behind climate change (Image: 1873, The Graphic)

From New Scientist:

As an antidote to this year's Darwin-mania, we celebrate a piece of science from 1859 that wasn't remotely controversial at the time, but which underpins the hottest political potato of our era: climate change. In May 1859, six months before the publication of On the Origin of Species, Irish physicist John Tyndall proved that some gases have a remarkable capacity to hang onto heat, so demonstrating the physical basis of the greenhouse effect. Charles Darwin had journeyed round the world and ruminated for 20 years before presenting his inflammatory ideas on evolution. Tyndall spent just a few weeks experimenting in a windowless basement lab in London.

"THE scene was one of the most wonderful I had ever witnessed. Along the entire slope of the Glacier des Bois, the ice was cleft and riven into the most striking and fantastic forms. It had not yet suffered much from the warming influence of the summer weather, but its towers and minarets sprang from the general mass with clean chiselled outlines." John Tyndall was entranced by the Alps, in particular the great glaciers that creaked and groaned as they crept down the mountains. He found the Mer de Glace especially captivating: the largest glacier in France was a deep river of ice that stretched down the north slope of Mont Blanc and spilled out into the Chamonix valley near the hamlet of Les Bois.

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‘90% Of The Last Million Years, The Normal State Of The Earth’s Climate Has Been An Ice Age’

From Watts Up With That?

Those who ignore the geologic perspective do so at great risk. In fall of 1985, geologists warned that a Columbian volcano, Nevado del Ruiz, was getting ready to erupt. But the volcano had been dormant for 150 years. So government officials and inhabitants of nearby towns did not take the warnings seriously. On the evening of November 13, Nevado del Ruiz erupted, triggering catastrophic mudslides. In the town of Armero, 23,000 people were buried alive in a matter of seconds.

For ninety percent of the last million years, the normal state of the Earth’s climate has been an ice age. Ice ages last about 100,000 years, and are punctuated by short periods of warm climate, or interglacials. The last ice age started about 114,000 years ago. It began instantaneously. For a hundred-thousand years, temperatures fell and sheets of ice a mile thick grew to envelop much of North America, Europe and Asia. The ice age ended nearly as abruptly as it began. Between about 12,000 and 10,000 years ago, the temperature in Greenland rose more than 50 °F.

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Obsession With Naked Women Dates Back 35,000 Years

Side and front views of the Venus of Hohle Fels. Credit: H. Jensen; Copyright University of Tubingen

From Live Science:

If human culture seems obsessed with sex lately, it's nothing new. Archaeologists have discovered the oldest known artistic representation of a woman — a carved ivory statue of a naked female, dating from 35,000 years ago.

The figurine, unearthed in September 2008 in Hohle Fels Cave in southwestern Germany, may be the oldest known example of figurative art, meaning art that is supposed to represent and resemble a real person, animal or object. The discovery could help scientists understand the origins of art and the advent of symbolic thinking, including complicated language.

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Changes In The Sun Are Not Causing Global Warming, New Study Shows

With the U.S. Congress beginning to consider regulations on greenhouse gases, a troubling hypothesis about how the sun may impact global warming is finally laid to rest. (Credit: iStockphoto)

From Science Daily:

ScienceDaily (May 12, 2009) — With the U.S. Congress beginning to consider regulations on greenhouse gases, a troubling hypothesis about how the sun may impact global warming is finally laid to rest.

Carnegie Mellon University's Peter Adams along with Jeff Pierce from Dalhousie University in Halifax, Canada, have developed a model to test a controversial hypothesis that says changes in the sun are causing global warming.

The hypothesis they tested was that increased solar activity reduces cloudiness by changing cosmic rays. So, when clouds decrease, more sunlight is let in, causing the earth to warm. Some climate change skeptics have tried to use this hypothesis to suggest that greenhouse gases may not be the global warming culprits that most scientists agree they are.

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Could Wolfram|Alpha Sway Google Regulators?

From Wired News/Epicenter:

News Analysis — Wolfram|Alpha, a company whose product you have never used, may turn out to be Google’s best friend.

For those who haven’t heard yet, Wolfram|Alpha is a much-hyped, badly-named computational search engine that gives real answers to queries such as “internet users in Europe.” It pulls off the techie magic by using structured data sets, rather than messy web pages, as its index. Its demo has impressed quite a few tech journalists, including the originally skeptical Danny Sullivan, one of the crown princes of search engine journalism. See the screenshot below from Read/Write/Web:

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Brain's Problem-solving Function At Work When We Daydream

These are fMRI brain scans from UBC Mind Wandering Study.
(Credit: Courtesy of Kalina Christoff)

From Science Daily:

ScienceDaily (May 12, 2009) — A new University of British Columbia study finds that our brains are much more active when we daydream than previously thought.

The study, published in the Proceedings of the National Academy of Sciences, finds that activity in numerous brain regions increases when our minds wander. It also finds that brain areas associated with complex problem-solving – previously thought to go dormant when we daydream – are in fact highly active during these episodes.

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Brain's Willpower Spot Found

From Live Science:

When healthy eaters choose broccoli over a Butterfinger, they use a small region in their brains that indulgers don't use.

That bundle of cells is a clue to the biology of willpower, a new study finds. Like a wagging finger in our heads, the region admonishes us to consider long-term benefits over instant rewards when we make decisions.

"This is the first time people have looked at the mechanism of self-control in people who are making real-life decisions," said Todd Hare, a Caltech neuroscientist who led the study.

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Did America Forget How to Make the H-Bomb?

From Mother Jones:

For decades nonproliferation experts have argued that, once unleashed, the nuclear genie cannot be stuffed back in the bottle. But they probably didn't consider the possibility that a country with nuclear bomb-making know-how might forget how to manufacture a key atomic ingredient. Yet that's precisely what happened to the US recently, and national security experts say this institutional memory lapse raises serious questions about the federal government's nuclear weapons management.

In 2007, as the government began overhauling the nation's stockpile of W76 warheads—the variety often carried by Ohio-class submarines—officials at the National Nuclear Security Administration realized they couldn't produce an essential material known as "Fogbank." What purpose this substance actually serves is classified, but outside experts have suggested that it's a sort of exploding foam that sits between the fission and fusion portions of hydrogen bombs. The Government Accountability Office reported in March that NNSA's effort to recover its Fogbank-making ability had resulted in a yearlong, $69 million delay in the refurbishment project. And a government official with knowledge of the situation tells Mother Jones that further Fogbank-related delays are imminent.

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How Nanotech Can Meet The Poor's Water Needs

From SciDev.net:

Nanotechnology holds huge potential for supplying clean water to the world's poor, but many challenges must be overcome to realise it.

When the economist Fritz Schumacher coined the phrase "small is beautiful" more than 30 years ago, he was hoping to promote "intermediate technologies" that focus on local techniques, knowledge and materials, rather than high-tech solutions to problems facing the world's poor.

But more recently, the phrase has taken on a different meaning as scientists and engineers develop nanotechnology — processes to control matter at an atomic or molecular level — and show that this field, too, can promote sustainable development.

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The Frontiers of Astronomy

From Discover Magazine:

DISCOVER's panel of top astronomers and astrophysicists discuss some of the biggest questions in the universe.

What lies beyond the edge of the solar system? Does life exist on other planets? Why is the universe constructed the way it is? Drawing on new insights and technologies, scientists are probing these unknowns in ways that were unimaginable just a few years ago. This month, DISCOVER presents a three-part investigation of the astonishing results. First up: In conjunction with the National Science Foundation, Caltech, and the Thirty Meter Telescope, DISCOVER brought together four leading astronomers to describe their studies of wayward comets, alien worlds, black holes, and the expanding universe. The panel discussion was held at Caltech’s Beckman Auditorium and moderated by DISCOVER’s Bad Astronomy blogger, Phil Plait. The four-part video from the panel is included in the two-page article below; to see video interviews with the four panelists, see the homepage for the event.

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Our Planet's Leaky Atmosphere

Photo: Loss of certain gases, especially hydrogen, has transformed Earth. It is one of the reasons that oxygen built up in the atmosphere. In the future, the depletion of hydrogen will dry out our oceans and all but shut down geologic cycles that stabilize the climate. Life may still be able to hold out in the polar regions. Earth past: 3 billion years ago (left) Earth present (center) Earth future: 3 billion years from now (right) Alfred T. Kamajian

From Scientific American:

As Earth's air slowly trickles away into space, will our planet come to look like Venus?

Key Concepts

* Many of the gases that make up Earth’s atmosphere and those of the other planets are slowly leaking into space. Hot gases, especially light ones, evaporate away; chemical reactions and particle collisions eject atoms and molecules; and asteroids and comets occasionally blast out chunks of atmosphere.
* This leakage explains many of the solar system’s mysteries. For instance, Mars is red because its water vapor got broken down into hydrogen and oxygen, the hydrogen drifted away, and the surplus oxygen oxidized—in essence, rusted—the rocks. A similar process on Venus let carbon dioxide build up into a thick ocean of air; ironically, Venus’s huge atmosphere is the result of the loss of gases.

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Mars Rover May Not Escape Sand Trap For Weeks

Photo: Engineers will try to recreate the terrain that Spirit is stuck in at NASA's Jet Propulsion Laboratory in California, where similar tests were performed in 2005 (above) to help extricate Opportunity from a sand trap (Image: NASA/JPL)

From New Scientist:

NASA's Spirit Mars rover is so deeply stuck in the sand that its belly may be resting on underlying rocks, which could hamper efforts to extricate it. Mission members say it will probably take weeks before they make any headway in freeing the rover.

Spirit began to have trouble driving around 1 May, says John Callas, the rover project manager at NASA's Jet Propulsion Laboratory in Pasadena, California.

Its wheels are now buried about halfway in the soil, which is so loose "it's like flour", says Callas. Mission managers have temporarily stopped trying to drive the rover as they consider how best to proceed.

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Swine Flu Data 'Very Consistent' With Early Stages Of A Pandemic

Swine flu data so far is very consistent with what researchers would expect to find in the early stages of a pandemic. (Credit: iStockphoto/Henrik Jonsson)

From Science Daily:

ScienceDaily (May 12, 2009) — Early findings about the emerging pandemic of a new strain of influenza A (H1N1) in Mexico are published in the journal Science.

Researchers from the MRC Centre for Outbreak Analysis and Modelling at Imperial College London, working in collaboration with the World Health Organisation and public health agencies in Mexico, have assessed the epidemic using data to the end of April. Their key findings are as follows:

* The data so far is very consistent with what researchers would expect to find in the early stages of a pandemic.

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Powerful Ideas: Fusing Atoms Just Might Work

Artist's rendering of a NIF target pellet being struck by multiple laser beams, which inside compress and heat the target to the necessary conditions for nuclear fusion to occur. Credit: Lawrence Livermore National Laboratory, and the Department of Energy

From Live Science:

This occasional series looks at powerful ideas — some existing, some futuristic — for fueling and electrifying modern life.

Solar power captures sunlight to create renewable energy, but recreating the sun on Earth holds even greater energy potential. Nuclear fusion — the power source inside the sun — will be attempted in new and soon-to-be-built facilities around the world.

"Fusion is a carbon-free and a virtually limitless supply of energy," said Ed Moses, project manager for the Department of Energy's recently commissioned National Ignition Facility (NIF) in Livermore, Calif.

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Bad Luck Bimbos: Intelligent Women Have Better Sex, Study Reveals

From Daily Mail:

Beauty may bag you a man - but brains will bring you more fun in the bedroom.

Women blessed with 'emotional intelligence' - the ability to express their feelings and read those of others - have better sex lives, research shows.

Those most in touch with their feelings have twice as many orgasms as inhibited sorts, the study found.

The finding could lead to new ways of counselling the 40 per cent of women who find it difficult or impossible to enjoy sex fully.

Researcher Tim Spector of King's College London said there were definite advantages to being a touchy-feely type.

He said: 'These findings show that emotional intelligence is an advantage in many aspects of your life, including the bedroom.'

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The Truth Is Out There, And The Nation's Maddest Scientists Are After It

From Wired:

Paranormal phenomena aren't just for Fox Mulder, Melinda Gordon, and Rod Serling. Even top academics can't resist a good ghost story. And maybe that's for the better: Brilliant ideas often seem crazy at first. Scientific American dubbed the Wright Brothers "the Lying Brothers" despite test flights witnessed by trainloads of startled onlookers. More obscure findings can fare worse: Germs, quarks, black holes, and continental drift were all once considered laughable. Still, impeccably credentialed scientists persist, as Lewis Carroll's White Queen says, in trying to believe a few impossible things before breakfast—or after they've received tenure.

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Planck: The Future Of Probing The Past

Photo: The Planck satellite will enable us to find out what happened just fractions of a second after the big bang (Image: Plnck / LBNL / SSC)

From The New Scientist:

WE ARE poised to peer further back in time than ever before. Next week, cosmology's biggest experiment in nearly a decade is due to blast into space. The European Space Agency's Planck satellite will enable us to find out what happened just fractions of a second after the big bang, when the universe is thought to have blown up to cosmic proportions from a speck of space-time.

The probe, which is fuelled and ready for launch in French Guiana, will examine in exquisite detail the cosmic microwave background (CMB), the relic radiation of the big bang. It is "like a surgical instrument", says Andrei Linde of Stanford University.

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The Day The Universe Froze: New Model For Dark Energy

The ultimate fate of the universe depends on the exact nature of dark energy. Depending on its properties, the universe may fly apart (the big rip) or the current expansion might reverse into contraction (the big crunch) or anything in between. (Credit: NASA/CXC/M. Weiss)

From Science Daily:

ScienceDaily (May 11, 2009) — Imagine a time when the entire universe froze. According to a new model for dark energy, that is essentially what happened about 11.5 billion years ago, when the universe was a quarter of the size it is today.

The model, published online May 6 in the journal Physical Review D, was developed by Research Associate Sourish Dutta and Professor of Physics Robert Scherrer at Vanderbilt University, working with Professor of Physics Stephen Hsu and graduate student David Reeb at the University of Oregon.

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