* Moon systems, not planets, may be place to find life: Alien life might be both easier and more interesting to discover through a new strategy, a study...
* Robot arms race seen underway: Proponents of robot weapons say they could keep soldiers out of harm's way. Critics say the machines raise troubling...
* Pollution may make birds change their tune: Nothing like a birdsong to remind you of nature's glory, right? Maybe not quite, according to rather creepy new...
* Estimates for peopling of Americas getting earlier: Humans appear to have first entered the Americas some 22,000 years ago, according to some archaeologists....
* Dip in brainpower may follow drop in real power: Researchers say low status seems to erode mental function -- with complicated implications for society. ...
* Tests back up theory of hot springs on Mars: Mars may have experienced life-giving processes similar to those that occur at Yellowstone National Park,...
* Almost "uncontacted" tribe revealed in photos: Rare photos were released to highlight the perils facing peoples living remote from the modern world. ...
* The Odyssey astronomically accurate?: The ancient Greek epic of adventure at sea and long-awaited homecoming may have more truth than suspected, scientists...
* Penguin populations falling steeply: biologist Like the proverbial canary in the coal mine, penguins are sounding the alarm for possible environmental...
* Tit-for-tat: birds found to repay wartime help Pied flycatchers and red-winged blackbirds share two traits, studies suggest: they're feisty defenders and...
* Drug may trick body into "thinking" it exercised: A new study is creating both hope, and worries that a remarkable substance could be ripe for abuse. ...
* Dolphins and the evolution of teaching: By repeating actions many times and seemingly "pointing" at things, some dolphins appear to teach their young to...
* Robotic helicopters teach themselves stunts: The research is a prelude to designing choppers that search for land mines or fight fires, scientists predict. ...
* "Historic" collider operation begins: The first beam in the world's newest and largest particle collider was switched on this morning, physicists announced. ...
* NASA: snow found in Martian skies: It's not certain whether the flakes ever reach ground, researchers say. http://www.world-science.net/othernews/080929_snow...
* Found: earliest known animal tracks?: Scientists claim to have found possibly the earliest animal footprints, but admit their report will stir skepticism. ...
* "Other half" of Darwin's theory passes test: Some flirtatious microbes have confirmed Darwin's view of how sexual advertising evolves, biologists say. ...
