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Here's a reason to get some shuteye: A new study suggests our brains go on a cleaning spree during sleep, flushing out gunk that builds up while we're awake.

Congressman Charles Rangel runs a real risk of losing in Tuesday's New York Democratic primary to Dominican-American rival Adriano Espaillat. Rangel is one of the longest-serving members of Congress.

The horrible memory of overcooked vegetables can and should be overcome, because yes, kale is really good for you. A cookbook author shares tips for making sure these veggies actually taste good, too.

Leaders of the National School Board Association say they're concerned about "federal overreach on school meals." But the First Lady maintains that now is not the time to turn back the standards.

Four buildings on Harvard University's campus near Boston were evacuated Monday after the school's police department received an unconfirmed report that explosives may have been placed inside.

"All the geographical, underwater topography and archaeological evidence strongly suggests that this wreck is Columbus' famous flagship, the Santa Maria," says ocean explorer Barry Clifford.

Consumers who care about how their food is produced have a growing number of apps they can turn to at the supermarket. The problem? Nailing down just what sustainability means when it comes to food.

Yes, they're big, lumbering, earthbound creatures. But sometimes, Bessie and friends just have to get airborne.

Simon Singh spotted the equation on a Homer Simpson blackboard. Had Homer just solved one of the toughest puzzles in math? His solution, crazily, seemed "valid" – so Singh checked Homer's numbers.

A degree in psychology is the most coveted among San Diego State University's class of 2013, the university said Friday.