Mice engaged in stimulating activities were less likely to seek out cocaine.

Research team reports first direct measurement of geothermal heat flow rising from deep within the Earth to the bottom of the ice sheet.

Public policy scholar chronicles shift to smarter approaches to crime and punishment.

Researchers call for balancing commercial extraction of deep-sea resources with protection of diverse seabed habitats.

Ever wake at night and find your way through the house without stubbing your toe? There's a region of the brain that enables you to do that – and generally helps you navigate the world.

Study: Sexual and gender minorities are overrepresented among homeless youth.

Engineered cartilage surfaces hold promise for treating damaged spinal discs.

Physicists use graphene to build lightweight ultrasonic loudspeakers and microphones, enabling people to mimic bats or dolphins’ ability to gauge distance and speed by using sound.

Astrobiologist investigates whether cosmic collisions were the key to earthly life.

Study finds lower greenhouse gas emissions on per-mile basis for driverless cars deployed as taxis — plus they're cost effective.

If you run into an old friend at the train station, your memory will forever link the person you saw with the place where you saw them. For the first time, researchers have been able to see that sort of link being created in people's brains.

In recent years, a host of charismatic wild species have returned to American cities in numbers not seen for generations.