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http://www.sciencenews.org/view/issue/id/6079
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In the December 5 Issue:
- TABLE OF CONTENTS
- Climate might be right for a deal: Copenhagen negotiations will take steps toward a climate-stabilizing treaty
- Botanical Whales: Adventures in the Tortugas reveal that seagrass fields need saving too
- Breaking the Speed Limit: Studies examine physiology and technology to better foresee the ultimate edge of human performance
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April 16th, 2005
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The first-ever find of shelled eggs inside a dinosaur fossil bolsters ideas about the reptiles' reproductive physiology. (p. 243)
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Some common childhood vaccines don't seem to work as well when administered with, or at the same time as, other vaccines. (p. 243)
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A new analysis of 130,000-year-old fossils found in a Croatian cave a century ago suggests that Neandertals ritually cut up corpses of their comrades and perhaps engaged in cannibalism. (p. 244)
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Astronomers have found one of the most chemically primitive stars known, dating to just a few hundred million years after the Big Bang. (p. 244)
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The novel design of what's now the world's fastest transistor opens the possibility of even speedier devices that could operate as fast as a trillion cycles per second. (p. 245)
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The jerky neck motions of a whooping crane may help it spot food by keeping its head motionless about half the time. (p. 245)
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A human gene inserted into rice enables that plant to break down an array of chemicals used to kill weeds. (p. 246)
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Race-based medicine could be a stepping-stone to the higher goal of targeting medicines toward the genetics of individual patients, but some researchers are troubled by the implications of practicing medicine according to patients' racial identities. (p. 247)
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Mathematicians are creating an atlas of solar system highways along which spacecraft can coast using no fuel. (p. 250)
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Blowflies that absorb mercury from fish carcasses they feed on as larvae rid themselves of much of that toxic metal when they become adults. (p. 253)
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Magnetic measurements by the Cassini spacecraft have revealed that Saturn's moon Enceladus has a tenuous atmosphere containing water vapor. (p. 253)
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A study of nine young men suggests that blue light is more effective than yellow at beating back sleepiness and muting key physiological changes that normally occur in late evening. (p. 253)
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Viagra shows promise for limiting threats of fetal loss from preeclampsia, a type of high blood pressure that frequently occurs during pregnancy. (p. 254)
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A new biochemical profile in blood may lead to earlier diagnosis of autism and a better understanding of its genetic causes. (p. 254)
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Breath training may help athletes who perform short, high-intensity activities such as sprinting. (p. 254)
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Fresh garlic or its powdered equivalent might prevent a potentially lethal condition in which pulmonary blood pressure is selectively elevated. (p. 254)
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(p. 255)
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