Bulletproof mutant frogs

Global Warming Fuels Speedy Evolution

The wood frogs show how resilient and adaptable frogs can be, he says. Contrary to popular portrayals of frogs as the environmental canaries in the coal mine, most frogs are "fairly bullet proof," he said.

That's why when the frogs disappear, as they are in places like the Monteverde Cloud Forest of Costa Rica, there's all the more reason to be concerned about how drastic climate is changing, he said.

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