Evolution at Lightning Speed: Fish Adapts in Just 3 Years

Within an incredibly brief period of three years, a small fish has evolved to survive temperatures that are cold enough to have killed its ancestors. The lowly stickleback, a fish no bigger than a human finger, has accomplished something that many scientists had thought impossible. It adapted genetically to a radically different environment and passed that change on to its progeny in just three generations. At the end of a three-year experiment, scientists at the University of British Columbia,...Full Story
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