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The grand jury documents left doubt, but federal investigators say they found "no credible evidence to disprove [Officer Darren] Wilson's perception that Brown posed a threat."

The ship wrapped up one of its first official journeys Thursday. The cruise was short, just three days. But it was a beginning.

Some breeders vie to grow ever more mouth-burning peppers. The guy behind the Habanada had a different goal: a habanero with no heat all. The aromatic, melon-like result is winning over top chefs.

In New York City, an instructor leads an indoor spinning class while cyclists at home around the country ride along — and compete with other riders — on special bikes outfitted with tablets.

An international consortium of researchers has synthesized about a third of the genetic code of baker's yeast. It's an important milestone in science's quest to create complex "synthetic life."

When anthropologist Renato Rosaldo went to live with a Philippine tribe that was known for beheading people, he couldn't grasp the emotion that fueled this violence. Then his wife suddenly died.

It's flu season — time for the marketing of juices and supplements that claim to boost immunity. But they don't help, scientists say. Instead, try eating healthy and getting enough sleep.

Can principals be better leaders if they have more time to focus on instruction? The Washington, D.C., schools are adding managers to handle operations and logistics.

Oliver Hart and Bengt Holmström — professors at Harvard and MIT, respectively — were awarded the prize for their work on understanding and improving contract agreements.

Hospital-acquired infections can be life-threatening, and unwashed hands are often to blame. One hospital in California thinks banishing handshakes could help reduce infections.