Physicists Build Unparticle Models Guided by Big Bang and Supernovae
Oct 17, 2007 |
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Cosmology and astrophysics may help guide physicists in building a model of “unparticles,” a newly proposed sector of physics. Recently, Hooman Davoudiasl of Brookhaven National Laboratory has investigated ...
Is Mars dead, or is it only sleeping?
Space & Earth / Earth Sciences
Oct 17, 2007 |
4.4 / 5 (59) |
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The surface of Mars is completely hostile to life as we know it. Martian deserts are blasted by radiation from the sun and space. The air is so thin, cold, and dry, if liquid water were present on the surface, ...
'Bionic' nerve to bring damanged limbs and organs back to life
Oct 17, 2007 |
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University of Manchester researchers have transformed fat tissue stem cells into nerve cells — and now plan to develop an artificial nerve that will bring damaged limbs and organs back to life.
Toward world's smallest radio: nano-sized detector turns radio waves into music
Oct 17, 2007 |
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Researchers in California today report development of the world’s first working radio system that receives radio waves wirelessly and converts them to sound signals through a nano-sized detector made of carbon nanotubes.
Heaviest stellar black hole discovered in nearby galaxy
Oct 17, 2007 |
4.8 / 5 (39) |
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Astronomers have located an exceptionally massive black hole in orbit around a huge companion star. This result has intriguing implications for the evolution and ultimate fate of massive stars.
Nanowire generates its own electricity
Oct 17, 2007 |
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Harvard chemists have built a new wire out of photosensitive materials that is hundreds of times smaller than a human hair. The wire not only carries electricity to be used in vanishingly small circuits, but generates power ...
Experimental Technique Sorts DNA, Cells, Molecules in a Split Second
Oct 17, 2007 |
4.7 / 5 (33) |
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A simple device just a few millimeters across can separate microscopic objects such as DNA or cells in a fraction of a second—thousands of times faster than conventional methods.
New mathematical model predicts more virulent microbes
Oct 17, 2007 |
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Microbes and humans interact in myriad ways, sharing a long history. Many of the most successful microbes are those that inhabit but do not kill their host. Cheaters lose. Tuberculosis settles into the lungs. Helicobacter ...
Earliest evidence for modern human behavior found in South African cave
Other Sciences / Archaeology & Fossils
Oct 17, 2007 |
4.5 / 5 (27) |
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Evidence of early humans living on the coast in South Africa, harvesting food from the sea, employing complex small stone tools and using red pigments in symbolic behavior 164,000 years ago, far earlier than previously documented, ...
Researchers confirm the power of altruism in Wikipedia
Oct 17, 2007 |
4.7 / 5 (20) |
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The beauty of open-source applications is that they are continually improved and updated by those who use them and care about them. Dartmouth researchers looked at the online encyclopedia Wikipedia to determine if the anonymous, ...
Researchers Give Computers Common Sense
Technology / Computer Sciences
Oct 17, 2007 |
4.5 / 5 (19) |
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Using a little-known Google Labs widget, computer scientists from UC San Diego and UCLA have brought common sense to an automated image labeling system. The common sense comes as the ability to use context ...
Consortium publishes Phase II map of human genetic variation
Oct 17, 2007 |
4.6 / 5 (16) |
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The International HapMap Consortium today published analyses of its second-generation map of human genetic variation, which contains three times more markers than the initial version unveiled in 2005. In two papers in the ...
New approach builds better proteins inside a computer
Oct 17, 2007 |
4.8 / 5 (12) |
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With the aid of more than 70,000 home computer users throughout the world, Howard Hughes Medical Institute (HHMI) researchers have, for the first time, accurately predicted the three-dimensional structure of a small, naturally ...
Acid oceans warning
Oct 17, 2007 |
4.7 / 5 (11) |
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The world’s oceans are becoming more acid, with potentially devastating consequences for corals and the marine organisms that build reefs and provide much of the Earth’s breathable oxygen.
Bacteria tied to 19,000 U.S. deaths
Oct 17, 2007 |
4.4 / 5 (9) |
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A study of a virulent drug-resistant bacterium has tied the infection to nearly 19,000 U.S. deaths in 2005.
