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Noctilucent clouds, high-altitude clouds that appear to glow in the sky at night, usually show up in the Southern Hemisphere summer. Satellite images showed them covering Antarctica in early November.

Microbes can thrive in extreme environments, from inside fiery volcanoes to down on the bottom of the ocean. Now scientists have found a surprising number of them living in storm clouds tens of thousands of feet above the Earth. And those airborne microbes could play a role in global climate.

Data indicate the U.S. economy grew at an impressive 5 percent rate in the third quarter. The stock market hit another record on Tuesday. David Greene talks David Wessel of the Brookings Institution.

People are storing more and more stuff online: photos, music, documents — even books. But if you're storing your digital belongings in the cloud, you should know you're giving up some rights.

Frontman Craig Minowa talks about tragedy in his past and how the group's new album, Love, reflects his own healing process.

Chinese stocks slumped after last week's Communist Party congress reinforced leader Xi Jinping's dominance. But investment sentiment already had been weak for months.

President Obama has decided not to visit the former president in the hospital, out of deference to Nelson Mandela's peace and comfort. The 94-year-old anti-apartheid leader has been hospitalized for three weeks with a lung infection.

From the journal Nature, so-called "super Earths" that orbit distant stars are among the most common planets in the galaxy. Now scientists have done a detailed analysis of one super Earth's atmosphere. They say it looks like this planet must have exotic clouds.

Pianist Yael Weiss talks about her latest project, 32 Bright Clouds: Beethoven Conversations Around the World.

The FBI is investigating claims that nude photos of celebrities, including Jennifer Lawrence, were stolen and posted online.