Avoiding poisons: A matter of bitter taste

In most animals, taste has evolved to avoid all things bitter—-a key to survival—- to avoid eating something that could be poisonous via taste receptors, known as Tas2r, that quickly spring into action and elicit the ...

Fish fossil yields jaw-dropping data on Man's past

The ancestor of all creatures with jaws and a backbone was not a sleek, shark-like beast but a toothless, armoured fish, said a study Wednesday that rewrites Man's evolutionary history.

In birds, personalities can be a question of weather

We all know about people's personalities, and anyone with a dog or a cat will also tell you about their temperaments. More surprising, though, is how many others, from octopuses to frogs and even spiders have them. But why ...

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