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Published online 8 April 2009 | Nature 458, 695-698 (2009) | doi:10.1038/458695a
News Feature
Evolution: Biology's next top model?
From Antarctic icefish to Galapagos finches, there are some interesting characters at the fringes of developmental biology. Brendan Maher explores a world of alternative model organisms.
Debate wears on as to how, exactly, it happened. Some say it could have been a global cooling event brought on by falling greenhouse-gas levels.
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