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The Pacific purple sea urchin's appetite for kelp threatens marine ecosystems along the California coast as it ravages the "lungs of the ocean." The solution, biologists say, might be on our plates.

The 22-year-old American topped a competitive field Thursday in Beijing. Figure skaters from Japan came in second and third.

Research shows that sleep deprivation makes people emotionally volatile and temperamental — a fact that hasn't escaped the notice of some reality TV producers, who deny contestants sleep in an effort to kick up televised drama.

If you're rolling out your own red carpet tonight, we have tips on how to keep your guests full of Oscar-themed food, drinks and challenging trivia.

Seventy years ago, an atomic bomb wiped a city off the map. The committee that picked the target knew the destruction would be awful, but hoped it could end the war and stop future use of such bombs.

In India, abortions are legal. But women are often afraid or ashamed to seek an abortion. And for rural women, there may not be a facility nearby. Here is the story of one woman's decision.

Two mothers whose sons were killed during the first Gulf War talk about how they became friends after their sons died. The past 22 years would have been tough without the friendship, because, as one tells the other, "what's in our hearts we share."

Pras Michel has been convicted in a federal court in Washington, D.C., on 10 counts related to charges that include conspiracy, witness tampering and failing to register as an agent of China.

A mastodon tooth washed up on a California beach and then went missing. A local museum tried to track it down.

News broke Thursday that in 2005, the CIA destroyed at least two videotapes made three years earlier that showed harsh interrogation techniques. Intelligence committee members from both parties say they weren't told about the tapes or about plans to destroy them.