Research and development

A new study co-authored by a Yale researcher finds that one in three teens have ridden with a driver — usually a peer — impaired by alcohol or marijuana.

The social fabrics of their neighborhoods, including friendships and ideas about masculinity, have a powerful impact on marijuana use among young minority men.

For people who obsessively wash their hands, Dr. Jamie Feusner would suggest imagining a worst-case scenario to learn to tolerate the feelings they experience.

"Changes in social behavior during adolescence... are not triggered by puberty, so we can't blame the hormones...."

Well-child visits are not only good for babies. A new study shows they're good for moms, too.

College students who think their parents are more accepting of drinking tend to drink more, a new study shows.

Scientists are close to being able to use precision medicine to make sure arthritis patients are taking the most effective drugs.

The rise of Tharsis, the solar system's largest volcanic system, may be linked to oceans on Mars. But it's still just a theory. The next Mars lander, due for launch in May, could help find an answer.

If China sustains reductions in air pollution, its residents could see their life expectancy extended by as much as 5.3 years.

Manipulating the "double-edged sword" of randomness could help scientists wipe out small populations of bacteria for good, preventing resistance to antibiotics.

One of the problems with current solar cells is that the best materials to convert sunlight into power also contain toxic levels of lead. New research may solve the issue and save money.

Scientists were surprised to learn that a hydrogel they developed to deliver drugs had its own therapeutic qualities.

Findings may lead scientists to reinterpret seismic maps of the Earth's interior.

If physicists can prove the holographic principle, they will have taken a major step toward a grand unified theory that can explain all the laws and principles governing reality. Whoa.