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Paleontologist Maeve Leakey talks with Ray Suarez about her recent discovery: a skull three and a half million years old that could provide clues to the ancestors of homo sapiens.

Examining new research on and uses for stents -- spring-like devices that keep heart patients' narrowing arteries open. Susan Dentzer reports.

Washington Governor Gary Locke details the latest on the Northwest quake that has caused an estimated billion dollars worth of damage.

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