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Are Aliens Among Us? | Scientific American

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Are Aliens Among Us? | Scientific American
Topic: Science 9:44 am EST, Dec  1, 2007

In pursuit of evidence that life arose on Earth more than once, scientists are searching for microbes that are radically different from all known organisms.

In this image, artist Adam Questell has imagined an alien cell that carries its genetic material in twin nuclei.

See also, Darwin's Surprise in the latest issue of The New Yorker.

Are Aliens Among Us? | Scientific American



 
 
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