Arthritic knees, it turns out, try hard to repair themselves.

University of Michigan officials said Friday they have ordered an outside review of campus security in the wake of a botched response to child pornography found on a medical resident's computer flash drive.

What birth control debate? A half-century after the introduction of the pill, acceptance of birth control by American women is virtually universal.

A Hungarian obstetrician known for promoting home births lost an appeal Friday against her two-year prison sentence for malpractice.

Under fierce election-year fire, President Barack Obama on Friday abruptly abandoned his stand that religious organizations must pay for free birth control for workers, scrambling to end a furor raging from the Catholic Church to Congress to his re-election foes. He demanded that insurance companies step in to provide the coverage instead.

A rash of teenage suicides in Russia has set off alarm bells and experts are urging the government to take immediate action.

Nearly 1 in 20 Americans older than 50 have artificial knees, or more than 4 million people, according to the first national estimate showing how common these replacement joints have become in an aging population.