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The claws are out

Could frozen zoos save animals from extinction?

The secret life of one of the ocean's wonders

There are many more blood types than the eight most of us are familiar with.

How does our sense of taste work?

Elite athletes don't just jump higher and run faster—they think differently, too.

When it comes to contraception for men, why are there so few options?

Many kinds of animals hibernate, and not just to escape the cold.

Memories help make us who we are … but how are memories made?

Why hasn’t evolution weeded out all the weird accidents and leftovers on plants and animals?