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POPSReverse evolution in real-time These findings provide further insights into the basic understanding of how evolution and diversity are generated and maintained. On the one hand, it provides evidence for evolution happening through changes in the distribution of alleles in a population (so-called standing genetic variation), from generation to generation, rather than the appearance of mutations, from one generation to the next. On the other hand, as Henrique notes, 'It has implications for the definition of biodiversity: some of the 'reversed' flies may be phenotypically identical to the ancestral flies, but they are genetically different. How then do we define biodiversity?' interesting experiments.
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POPSThe blurry line between life, nonlife Twitches of life are showing up where life shouldn't exist. In southern Africa, for example, scientists burrowed 2 miles beneath the earth's surface,discovering bacteria that feed on radioactive rocks. "That's crazier than any science fiction," said Pratt, part of the team that made the 2006 discovery. "This is life that shouldn't be there. Except it is." interesting concept.
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