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The National Academies of Sciences, Engineering and Medicine sorted through 10,000 studies to determine the good and bad health effects of marijuana. Tight drug restrictions impede research, they say.

For NPR's series #RaceOnTech, we are meeting the diverse men and women who work in America's tech and science fields, like Mamie Parker, a fish and wildlife biologist who's a pioneer in her field.

One of the biggest topics President Obama is expected to discuss with Chinese President Xi Jinping this week is the hacking of U.S. companies by China. American officials say the issue threatens relations between the countries, and the U.S. is threatening to impose sanctions.

The dinosaur named Llukalkan aliocranianus was a predator with a menacing appearance and the ability to strike fear in its prey. Paleontologists said it roamed the Earth nearly 80 million years ago.

Federal bank regulators have sued three former top executives of Washington Mutual (WaMu), the biggest U.S. bank ever to fail, accusing them of negligence…

A key al Qaeda leader and five other suspected terrorists are killed in Yemen after the car in which they were riding is attacked by an unmanned aircraft, Yemeni officials say. U.S. officials confirm the strike was a planned CIA attack. Hear NPR's Tom Gjelten.