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A study of more than 7,000 British civil servants finds that age-related declines in cognitive ability start as early as 45. The results suggest that efforts to head off mental problems late in life need to begin in middle age, the study's authors write at the end of their paper.

A placebo can take the form of a sugar pill or even a fake surgery. It's often used to test the effectiveness of a trial drug. Ted Kaptchuk, director of Harvard University's Program in Placebo Studies and the Therapeutic Encounter, discusses potential applications for the healing power of placebos.

Physicist Richard Hill and colleagues at the University of Nottingham have a powerful magnet that they have used to levitate fruits, beer and most recently, fruit flies. It's a low-cost way to study the effects of zero gravity on biological systems, Hill says.

Under the new rule, children and spouses of American citizens may not have to leave the country to apply for legal status.

Primus' irreverent funk-rock style was ubiquitous throughout the '90s. The band visits World Cafe to perform songs from its latest album, Green Naugahyde.

It's taken a while, but a lawsuit claiming that a mouse was in a can of the soda is getting attention because of the reason why Pepsi says the story can't be true.

Syrian authorities say a suicide bomber killed more than two dozen people in Damascus Friday, just two weeks after a similar attack in the capital left more than 40 dead. Opposition activists are questioning the government account of the bombing.

The Justice Department is redefining the criminal definition of "rape" for the first time since the 1920s. It will now include same-sex assaults and a definition beyond actual intercourse. This will change the way local police departments report crime statistics.

Instruments destroyed, recovered and mistaken for each other: all the news that's fit to link.

Four years ago, Melissa Block traveled several times to Milford, N.H., to talk with voters. Friday, she talks to two of the people she met there: Noreen O'Connell and Steve O'Keefe. They discuss the current GOP presidential field.