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When Mexican tetra fish moved into dark caves long ago, they evolved to deal with the dark by becoming albino…and going blind. And new research shows that the changes various cavefish populations went through occurred repeatedly--a massive, textbook example of convergent evolution. The study is in the journal BioMed Central Evolutionary Biology

You’ve heard of tennis elbow. Well, a friend of mine has gamekeeper’s thumb. When he told me his diagnosis, it rang a bell