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When scientists got their hands on a collection of the world's biggest gem diamonds, they found something surprising inside — clues about what sits hundreds of miles beneath our feet.

A Portland, Oregon, mom whose 29-year-old son died unexpectedly of natural causes couldn’t stop searching for answers as to why. He was healthy. What happened?

Popular myth has long credited New York's soft water for the city's irresistibly crusty, chewy bagels. But the chemistry behind a superior bagel is more complicated.

As a barrage of tweets shows, the outrage felt by many women who work in science is neither silent nor unfunny.

In rural America, 23.4 million people do not have high-speed Internet. Microsoft plans to change that, in an effort that uses cheap technology and appeals to the lowest common denominator in politics.

In this edition: posers, pretenders and passers.

In rural America, 23.4 million people do not have high-speed Internet. Microsoft plans to change that, in an effort that uses cheap technology and appeals to the lowest common denominator in politics.

When astronomers spot a new planet that's too far away to be seen in detail, they work with artists to depict it. Space artists say they have a lot of freedom, but have to be careful, too.

Betsy Levy Paluck is a newly minted MacArthur fellow. Her research in Rwanda looked at how people become more tolerant.

Major gifts from the business community are fueling student start-ups at San Diego State University.