Science News Magazine:Vol. 171 No. #18
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More Stories from the May 5, 2007 issue
Lost in transportation
A new algorithm might make online driving directions more accurate.
Stinky compounds emitted by ladybugs can impart a foul taste to wines made from grapes on which the insects had been feeding.By Janet Raloff
Kin play limited role in chimp cooperation
Male chimps collaborate in a variety of ways and, like people, often find partners outside of their immediate families for cooperative ventures.By Bruce Bower
Lake Superior is warming faster than its local climate
In recent decades, the waters of Lake Superior have warmed significantly faster than have air temperatures at nearby sites onshore, a trend caused in part by a long-term decrease in the lake's winter ice cover.By Sid Perkins
Spider blood fluoresces
Among spiders, fluorescence under ultraviolet light seems to be a widespread trait.By Susan Milius
A solar forecast
Solar activity, which waxes and wanes in an 11-year cycle, will most likely begin its next round in March 2008 and peak sometime between late 2011 and mid 2012.
Health & Medicine
Less Is More (Bone): Yearly osteoporosis drug reduces fractures
Older women with osteoporosis who received yearly infusions of a drug that prevents bone loss had far fewer fractures than did peers who didn't get the drug.By Brian Vastag
Talk to the Hand: Language might have evolved from gestures
Language might have evolved from hand gestures, say researchers who study communication in chimpanzees.
Quantum Loophole: Some quirks of physics can be good for science
Physicists have found a way to almost double measurement precision when using photons to gauge distances.
Automatic Networking: Brain systems charge up in unconscious monkeys
Even when monkeys are anesthetized, their brains show patterns of electrical activity similar to those exhibited during wakeful activity.By Bruce Bower
Liquid Center: Mercury has a molten core, radar reveals
Mercury is hot stuff: It's got a core that's at least partially molten, a new radar study of the planet's spin reveals.
Health & Medicine
More Than Bit Players: Snippets of RNA might sway pancreatic cancer
Small pieces of genetic material called microRNA might provide a preview of pancreatic cancer's aggressiveness and offer targets for combating the usually deadly disease.By Nathan Seppa
Not-So-Clear Alternative: In its air-quality effects, ethanol fuel is similar to gasoline
Switching the nation's vehicles from gasoline to ethanol may not reduce air pollution.
Peru’s Sunny View
Researchers have found the oldest solar observatory in the Americas, a group of 13 towers first used around 300 B.C. to mark the positions of sunrises and sunsets from summer to winter solstice.
Networks of tiny computerized sensors that adjust their function as needed may soon pervade our environment.
Letters from the May 5, 2007, issue of Science News
Mere kats? “Science behind the Soap Opera” (SN: 3/3/07, p. 138) shows that meerkats bear an uncanny resemblance to human beings. We, too, have an innate sense of responsibility for our group and individually commit acts of unspeakable violence. John HagerhorstFrederick, Md. Just a dram “Natural-Born Addicts: Brain differences may herald drug addiction” (SN: 3/3/07, […]By Science News