Stanford University School of Medicine

Some people infected with pathogens spread their germs to others while remaining symptom-free themselves. Now, investigators at the Stanford University…

Homes with dirt floors can make people sick. Replacing them with concrete floors helps cut risks but isn't always affordable. A new project in Rwanda relies on a low-cost alternative.

Since the hormone oxytocin makes people more social, it's easy to imagine it might cause the social deficits of autism. But a study found children with autism no more likely to be short of oxytocin.

Americans are much less active in their leisure time than they were 20 years ago; that's true even for young people. Up to half of people say they're completely sedentary. Desk jobs don't help.