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Scientists say the sun will reverse polarity within the next three to four months in an event that marks the midpoint of "solar max" — a period of peak solar activity.

The FAA recently approved permits for the first commercial use of drones. So later this summer, two drones will be used to survey ice floes and migrating…

There's tantalizing — if preliminary — evidence that compounds in cocoa may boost thinking, attention and memory. But headlines on the latest research get it wrong.

A Daily Beast story this week led readers and other news organizations to believe that intelligence officials were saying that 20 al-Qaida operatives had been chatting on the phone. But the reporters who broke the story say it was a "virtual meeting space," not a phone call.

A U.S. radar system that tracks thousands of objects orbiting Earth — from satellites to harmful debris — has reportedly been slated for a shutdown. The pending shutdown of the system, run by the Air Force, is being blamed on the government's sequestration cuts.

The man who admitted to killing 13 people at a military base in Texas is representing himself in court. Host Michel Martin talks to Mohamed Elibiary, an expert on homegrown terrorism, about Army Major Nidal Hasan's trial and how to recognize signs of radicalization in the U.S.

The attack submarine USS Miami was heavily damaged last year in a fire set by a disgruntled civilian employee at the shipyard.

The owner of the encrypted email service posted a cryptic message, saying he was barred from divulging specifics.

Carbon dioxide levels in the atmosphere cycle up and down as plants take it up in the summer and let some of it out in the winter. Over the past 50 years, these "breaths" have gotten larger, as plants in the Arctic are taking up more carbon dioxide during the warmer summers.

In New Mexico, the cremated remains of the state's deceased indigents often enter a state of limbo. Many spend years on county storage shelves. But country officials are now trying to give these remains a grave, a headstone and a public memorial service.