October 29, 2011

Pollution and evolution: Waters of change

Evolution in action before our eyes!

Pollution and evolution
The Economist
An accidental experiment in America shows how evolution happens
IT IS not often that biologists have a chance to watch natural selection in action. The best-known cases—the evolution of resistance to antibiotics in bacteria and to pesticides in insects—are responses to deliberate changes people have made in the environment of the creatures concerned. But mankind has caused lots of accidental changes as well, and these also offer opportunities to study evolution.

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