Pesticides threaten birds and bees alike, study says

Neurotoxic pesticides blamed for the world's bee collapse are also harming butterflies, worms, fish and birds, said a scientific review that called Tuesday for tighter regulation to curb their use.

Size key to top speed in animals, study finds

It's not quite E=mc2, but scientists unveiled Monday a simple, powerful formula that explains why some animals run, fly and swim faster than all others.

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