Cover
Optical laser scan of early hominin footprints at Ileret, Kenya, color-rendered to illustrate depth; reds indicate areas of high elevation, blues lower elevation. The footprints are 1.5 million years old and were probably made by Homo ergaster/erectus. Two right footprints and a partial left are visible along with a range of animal prints.
A 'Wimpy' Flu Strain Mysteriously Turns Scary
Researchers are trying to figure out why resistance to the most widely used flu drug has skyrocketed -- and what that means for pandemic preparedness.
Making Every Baby Girl Count
China is ramping up a program that addresses the sociological factors behind an alarming trend: the country's rising sex ratio at birth.
Chinese Men: A Rising Tide of Troublemakers?
Chinese officials are taking measures to encourage couples to value daughters (see main text), but they don't talk much about the flip side of the problem: men who can't find wives.
Will Monju's Resurrection Give Breeders a Second Lease on Life?
A long-shuttered fast breeder reactor could be the bridge to a new generation of such reactors, if it can overcome technical problems that have delayed its planned restart.
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Saturday, April 4, 2009
Science, February 27, 2009
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