14/02/2011

Earliest humans not so different from us, research suggests

(PhysOrg.com) -- That human evolution follows a progressive trajectory is one of the most deeply-entrenched assumptions about our species. This assumption is often expressed in popular media by showing cavemen speaking in ...

Probing Question: How did Valentine's Day start?

Never mind the 160 million greeting cards that will be purchased for Valentine's Day this year. Forget about the 35 million heart-shaped boxes of chocolates that will pass from giver to recipient. Long before today's modern ...

The two faces of Tempel 1

(PhysOrg.com) -- Just one year before its Feb. 14 encounter with comet Tempel 1, NASA's Stardust spacecraft performed the largest rocket burn of its extended life. With the spacecraft on the opposite side of the solar system ...

World phosphorous use crosses critical threshold

(PhysOrg.com) -- Recalculating the global use of phosphorous, a fertilizer linchpin of modern agriculture, a team of researchers warns that the world's stocks may soon be in short supply and that overuse in the industrialized ...

Ancient Mesoamerican sculpture uncovered in Southern Mexico

(PhysOrg.com) -- With one arm raised and a determined scowl, the figure looks ready to march right off his carved tablet and into the history books. If only we knew who he was - corn god? Tribal chief? Sacred priest?

Strange ways of wooing

Birds do it, fish do it, even sexually ambiguous flatworms do it: all these creatures use complex strategies to win at the mating game.

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