More Evidence Found for Water on Mars
Feb 15, 2007 |
4.3 / 5 (69) |
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A spacecraft recently arrived at Mars has provided new evidence that fluids, likely including water, once flowed widely through underlying bedrock in a canyon that is part of the great Martian rift valley.
New energy source? Scientists convert heat to power using organic molecules
Feb 15, 2007 |
4.6 / 5 (90) |
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Researchers at the University of California, Berkeley, have successfully generated electricity from heat by trapping organic molecules between metal nanoparticles, an achievement that could pave the way toward ...
Quantum effects writ large
Feb 15, 2007 |
4.5 / 5 (22) |
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A team of physicists from Rice University, Rutgers University, and the Max Planck Institute for Chemical Physics of Solids in Dresden, Germany, this week reports in the journal Science the discovery of surprising quantum ...
Quantum hall effect observed at room temperature
Feb 15, 2007 |
4.5 / 5 (50) |
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Using the highest magnetic fields in the world, an international team of researchers has observed the quantum Hall effect – a much studied phenomenon of the quantum world – at room temperature.
Clock Comparison Yields Clues to 'Constant' Change
Feb 15, 2007 |
4.6 / 5 (32) |
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Years of comparisons among the world’s best atomic clocks—based on different atoms—have established the most precise limits ever achieved in the laboratory for detecting possible changes in so-called “constants” of nature. ...
Nanotube, heal thyself
Feb 15, 2007 |
4.7 / 5 (34) |
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Pound for pound, carbon nanotubes are stronger and lighter than steel, but unlike other materials, the miniscule cylinders of carbon – which are no wider than a strand of DNA – remain remarkably robust even when chunks of ...
Coldest lab to simulate hot physics of early universe
Feb 15, 2007 |
4.4 / 5 (16) |
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Cheng Chin will make a vacuum chamber in his laboratory the coldest place in Chicago in order to simulate the impossibly hot conditions that followed the big bang during the earliest moments of the universe.
Disorder May Be in Order for ‘Spintronic’ Devices
Feb 15, 2007 |
4.6 / 5 (20) |
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Physicists at JILA are using ultrashort pulses of laser light to reveal precisely why some electrons, like ballet dancers, hold their spin positions better than others—work that may help improve spintronic ...
Antarctic Temperatures Disagree with Climate Model Predictions
Space & Earth / Earth Sciences
Feb 15, 2007 |
4.4 / 5 (71) |
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A new report on climate over the world’s southernmost continent shows that temperatures during the late 20th century did not climb as had been predicted by many global climate models.
Rosetta correctly lined up for critical Mars swingby
Space & Earth / Space Exploration
Feb 15, 2007 |
4.8 / 5 (12) |
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ESA mission controllers have confirmed Rosetta is on track for a critical 250-km Mars swingby on 25 February. Engineers have started final preparations for the delicate operation, which includes an eclipse, ...
MIT Graduate Wins $30,000 Prize for Building Climbing Device
Feb 15, 2007 |
4.6 / 5 (30) |
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Nathan Ball, graduate student in mechanical engineering at MIT, won this year's $30,000 Lemelson-MIT Student Prize for invention of a device that makes the fantasy of leaping tall buildings in a single bound ...
Scientists on the way to sifting out a cure for HIV
Nanotechnology / Bio & Medicine
Feb 15, 2007 |
4.5 / 5 (45) |
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HIV may one day be able to be filtered from human blood saving the lives of millions of people, thanks to a world-first nano-membrane innovation by Queensland University of Technology scientists.
Theory aims to describe fundamental properties of materials
Feb 15, 2007 |
4.1 / 5 (23) |
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Gold is shiny, diamonds are transparent, and iron is magnetic. Why is that? The answer lies with a material ’s electronic structure, which determines its electrical, optical, and magnetic properties.
Hidden gems: New composites are stiffer than diamond
Feb 15, 2007 |
4.5 / 5 (23) |
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Using a unique combination of barium titanate and tin, University of Wisconsin-Madison researchers have made the first known material that's stiffer than diamond. The group published its results in the Feb. 2 issue of Science.
High-Frequency Cryocooler Is Tiny, Cold and Efficient
Feb 15, 2007 |
4.5 / 5 (13) |
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A new cryogenic refrigerator has been demonstrated at the National Institute of Standards and Technology that operates at twice the usual frequency, achieving a long-sought combination of small size, rapid cooling, low temperatures ...
