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Everybody worries about losing eyesight or hearing, but the sense of smell may help people stay safe. People with impaired odor detection are more likely to eat spoiled food or let pans catch on fire.

U.S. surveillance drones have begun to maintain a presence over Syria, preparing for possible airstrikes against the extremist group that calls itself the Islamic State. A mission to expand airstrikes inside Syria raises new questions, though, and critics on both sides ends of the policy spectrum are weighing in.

The protests following Michael Brown's death have rekindled long-standing complaints about racist policing in the St. Louis area. Cops there are now becoming more outspoken in their own defense.

One in 10 packaged foods still contains trans fats, according to a new study. The problematic oils give foods a rich taste and texture and extend shelf life, but have been linked to heart disease.

But at a news conference, the president said the Sunni militant group was continuing to lose arms and equipment because of targeted U.S. strikes against its members in Iraq.

Thousands of Chinook salmon are struggling to survive in the Klamath River, where waters are running dangerously low and warm. Cold reservoir water is instead going to farms in the Central Valley.

The Damascus suburb hit by a deadly chemical weapons attack a year ago remains surrounded by Syrian government forces who are still trying to squeeze the rebels out.

Even though the current outbreak in West Africa has become the largest ever, Ebola isn't the most attractive business proposition for drugmakers. The right financial incentives might change that.

The photo showed a little boy. He was found naked on a beach in Liberia and was very sick, most likely with Ebola. The world was deeply touched. And hoped for a miracle. But his story has a sad end.

Older people whose visual acuity has slipped by just one letter on the eye chart are more likely to die sooner, researchers say. New glasses may be all it takes to maintain independence.