Feature
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LifeA Most Private Evolution
The most dramatic examples of the power of evolutionary theory may come from the strange and ugly stuff — biology too dumb to have been designed.
By Susan Milius -
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ComputingComputing Evolution
Scientists sift through genetic data sets to better map twisting branches in the tree of life.
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SpaceWhiff of Martian methane offers lively possibilities
The definitive discovery in Mars’ atmosphere of methane — often, but not always, a compound hinting at life — introduces the possibility of underground organisms.