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Big brains are pricey, guppy study shows

Bigger brains can make animals, well, brainier, but that boost in brain size and ability comes at a price. That's according to new evidence reported on January 3rd in Current Biology, in which researchers artificially selected ...

dateJan 03, 2013 in Plants & Animals
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Evolution may take giant leaps

( -- A new study of thousands of species of plants and animals suggests new species may arise from rare events instead of through an accumulation of small changes made in response to changes in the environment.

dateDec 11, 2009 in Evolution weblog
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