More from Jeff Hecht
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Spiral ring reveals ancient complex machines
News
Tiny fossils reveal key step in animal evolution
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Technology
Active noise silences fans
News
Space suit switch complicates spacewalk
News
Four-winged birds may have been first fliers
News
Technology
NASA one step closer to shuttle repair in orbit
News
Four-winged birds were first to take to the air
News
Wi-Fi networks can be jammed from PDAs
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Impact site identified for biggest extinction
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NASA must transform to put men on Mars
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Giant masks reveal early Maya sophistication
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Humans
Inside the neanderthal mind
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