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http://www.sciencenews.org/view/issue/id/3493
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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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January 18th, 2003
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Stick insects may have done what biologists once thought was impossible: lose something as complicated as a wing in the course of evolution but recover it millions of years later. (p. 35)
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Biologists may have found the molecular handshake that attaches an embryo to the wall of the uterus. (p. 35)
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Low or high concentrations of the hormone testosterone may contribute to delinquency and depression mainly in children who have poor relationships with their parents. (p. 36)
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Researchers have modified a gold surface so that it switches from a water-attracting mode to a water-repelling one on command. (p. 36)
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An anticlotting molecule in the saliva of vampire bats combats strokelike brain damage in mice. (p. 37)
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A recent survey along a midocean ridge beneath the Arctic icepack unveiled an unexpected abundance of hydrothermal activity. (p. 37)
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A novel search technique that could ultimately find Earthlike worlds has uncovered an extrasolar planet that is 30 times farther away than any other planet detected and lies closer to its parent star than does any other orb discovered to date. (p. 38)
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An amendment to the blood-clotting pathway might link Viagra to heart attacks in some users. (p. 38)
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Western scientists make their first expeditions to Mongolia's Tsaatan people, herders who preserve the old ways at the southernmost rim of reindeer territory. (p. 40)
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Experimental gene-delivery therapies generally use viruses to shuttle genetic material into cells, but some researchers are devising ways to avoid using the sometimes-risky viruses. (p. 43)
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People who first entered King Tutankhamen's tomb did not suffer from a legendary curse but instead lived long lives. (p. 45)
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Planetary scientists have discovered ice near the edge of Mars' south polar cap. (p. 45)
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An organic watermelon field in California near remnants of wild land still had enough bees of North American species to pollinate a commercial crop, but habitat-poor farms didn't. (p. 45)
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An old-fashioned pill for preventing high blood pressure and some heart disease appears to work better than new, more expensive drugs. (p. 45)
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Mice protected by a drug from radiation-induced sterility have normal offspring. (p. 46)
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Beetle populations confined to specific forest areas by roads seem to have lost some of their genetic diversity. (p. 46)
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As little as one serving of fish per month offers protection against the most common form of stroke. (p. 46)
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Recent observations with an Earth-orbiting spacecraft may provide new ways to predict when solar temper tantrums will cause the geomagnetic storms that disrupt communications systems on Earth and harm satellites. (p. 46)
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