Toward pure white light: Next-generation LEDs show bright promise
Sep 24, 2007 |
4.3 / 5 (84) |
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Scientists in India are reporting an advance toward discovering a Holy Grail of the illumination industry — a white LED, a light-emitting diode that produces pure white light suitable for interior lighting of homes, offices ...
Research team says extraterrestrial impact to blame for Ice Age extinctions
Space & Earth / Earth Sciences
Sep 24, 2007 |
4.7 / 5 (46) |
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What caused the extinction of mammoths and the decline of Stone Age people about 13,000 years ago remains hotly debated. Overhunting by Paleoindians, climate change and disease lead the list of probable causes. ...
Seeking Objects 'Weirder Than Black Holes'
Sep 24, 2007 |
4.6 / 5 (45) |
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Researchers from Duke University and the University of Cambridge think there is a way to determine whether some black holes are not actually black.
Scientists model a cornucopia of Earth-sized planets
Sep 24, 2007 |
4.3 / 5 (27) |
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In the Star Wars movies fictional planets are covered with forests, oceans, deserts, and volcanoes. But new models from a team of MIT, NASA, and Carnegie scientists begin to describe an even wider range of ...
Magnetic Snakes Create Water Current
Sep 24, 2007 |
4.4 / 5 (24) |
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Physicists at Argonne National Laboratory have found that magnetic particles suspended in water and subjected to an alternating magnetic field will form snake-shaped structures that can control the flow of ...
Researchers say lack of sleep doubles risk of death... but so can too much sleep
Sep 24, 2007 |
4.6 / 5 (23) |
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Researchers from the University of Warwick, and University College London, have found that lack of sleep can more than double the risk of death from cardiovascular disease. However they have also found that point comes when ...
Pomegranate Could Fight Cancer
Sep 24, 2007 |
4.7 / 5 (22) |
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Researchers in California are reporting new evidence explaining pomegranate juice’s mysterious beneficial effects in fighting prostate cancer. In a study scheduled for the Sept. 19 issue of ACS’ Journal of ...
Solving a Dragonfly Flight Mystery
Sep 24, 2007 |
4.3 / 5 (24) |
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Dragonflies adjust their wing motion while hovering to conserve energy, according to a Cornell University study of the insect's flight mechanics. The revelation contradicts previous speculation that the change in wing motion ...
Scientists get first look at nanotubes inside living animals
Nanotechnology / Bio & Medicine
Sep 24, 2007 |
4.6 / 5 (22) |
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Rice University scientists have captured the first optical images of carbon nanotubes inside a living organism. Using fruit flies, the researchers confirmed that a technique developed at Rice -- near-infrared fluorescent ...
New dinosaur species found in Montana
Other Sciences / Archaeology & Fossils
Sep 24, 2007 |
4.5 / 5 (21) |
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A dinosaur skeleton found 24 years ago in Montana has finally been identified as a new species that links North American dinosaurs with Asian dinosaurs. The dinosaur would have weighed 30 to 40 pounds, walked on two feet ...
Fluid theory confirmed by Foton spacecraft
Sep 24, 2007 |
4.2 / 5 (22) |
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In scientific research, there is great satisfaction when theoretical work is eventually supported by experimentation. Such was the case this week for a team of Italian and US scientists when they received ...
If you want more babies, find a man with a deep voice
Medicine & Health / Psychology & Psychiatry
Sep 24, 2007 |
3.8 / 5 (17) |
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Men who have lower-pitched voices have more children than do men with high-pitched voices, researchers have found. And their study suggests that for reproductive-minded women, mate selection favours men with low-pitched ...
Droplets that Roll Uphill
Sep 24, 2007 |
4.2 / 5 (15) |
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A recent experiment conducted by physicists at University of Bristol in the United Kingdom has shown that liquid drops can defy gravity. Droplets of liquid on an inclined plate that is shaken up and down can ...
Diet and medications may assist prevention of prostate cancer
Sep 24, 2007 |
4.3 / 5 (14) |
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Recent investigations of medications, diet and the molecular understanding of prostate cancer are defining potential prevention strategies for the disease, and herald a new stage in the management of this cancer, according ...
Spaceflight shown to alter ability of bacteria to cause disease
Biology /
Sep 24, 2007 |
4.3 / 5 (12) |
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Space flight has been shown to have a profound impact on human physiology as the body adapts to zero gravity environments. Now, a new study led by researchers from the Biodesign Institute at Arizona State University has shown ...
