Science

Babies who ate the equivalent of about 4 heaping teaspoons of peanut butter weekly were about 80 percent less likely to develop a peanut allergy by their fifth birthday. So finds a landmark new study.

India's air pollution is so bad that it shortens many people's lives by about three years, a study found. This week Al Gore visited New Delhi to link bad air to climate change.

Some companies are using surveys or brain games to assess what kind of workers candidates are. Employers say the tests can help reduce turnover and surface talent recruiters might otherwise overlook.

Shifts in climate in the Middle Ages likely drove bubonic plague bacteria from gerbils in Asia to people in Europe, research now suggests. Rats don't deserve all the blame.

New GMO potatoes don't bruise as easily, and, when fried, they have less of a potentially harmful chemical. Yet some big chip and french fry makers won't touch them because of the stigma of GMOs.

A simple blood test can analyze bits of fetal DNA leaked in the mother's bloodstream. It's less risky than invasive alternatives like amniocentesis, but it doesn't tell as much about fetal health.

Swedish kids growing up in families that wash their dishes by hand are less likely to develop certain allergies than those in families with dishwashers, a study suggests. But there may be more to it.