Science

Your DNA holds the secrets of your ancestry, and at least a dozen companies offer to crack the code. But there's more than a bit of hype here.

A rash of climate-related deaths adds fuel to the debate about global climate change.

"When Columbia disintegrated, killing all seven astronauts, it was shades of Challenger. Will NASA be undone by its obsessive focus on the shuttle?

No creatures make more sacrifices for science--albeit involuntarily--than the mice and rats of lab research. Some 30 million are used each year in the U.S. alone.

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Frightening as the epidemic was, worse plagues may await.

War. Disease. Disaster. Science played a key role in a good deal of the year's bad news. But the discoveries were astonishing, too.

A brain-building diet menu

Devices that harness brain or nerve impulses to help patients see, hear, move, and communicate are already available -- though for now they remain relatively primitive.

How faulty plumbing sank the world's largest oil platform.