Life from Mars? Or Invaders from Earth?
When NASA claimed in 1995 that it had found evidence of ancient life in the Martian meteorite at left, there were plenty of skeptics. Now comes a paper in Science arguing that organic chemicals in the rock come mostly from contamination on Earth rather than bacteria on Mars. That doesn't prove Martian microbes didn't sleep here--but it weakens the case.
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Quotes of the Day »
GOOGLE'S STATEMENT, over a racially offensive picture of Michelle Obama which appears when users search for images of the first lady. Google has refused to remove the picture from its search results
Quotes of the Day »
GOOGLE'S STATEMENT, over a racially offensive picture of Michelle Obama which appears when users search for images of the first lady. Google has refused to remove the picture from its search results
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