When mice encounter an unfamiliar food, neurons in a brain region called the amygdala light up (blue). If the mice start feeling sick after the meal, the same neurons get reinforced to help the mouse ...

Puppies with a good grasp of basic gestures, self-confidence and impulse control grow into well-behaved adults, a new study suggests.

Across much of the world, loneliness increases from middle age to later years. That trend is reversed in the United States, a new study shows.

Rising global temperatures are driving the sharp decline in terrestrial water storage. This trend isn’t likely to change, scientists say.

Autism rates are higher than ever before, probably because of more expansive and sensitive diagnoses. Those numbers highlight the need for more support for people with autism.

An overlooked Antarctic water system could raise sea levels by more than 2 meters by 2300, computer simulations show.

Imminent loss of NASA's Aura and Canada's SCISAT will severely diminish scientists’ ability to monitor ozone-depleting substances in the stratosphere.

An archaeological site in Germany suggests communal hunting and complex thinking emerged earlier in human evolution than once thought.

While solitary black holes should be common, they are hard to find. The one in Sagittarius revealed itself when it passed in front of a dim background star, magnifying the star’s light and slowly ...

The Curiosity rover identified hidden caches of the mineral siderite, which could help explain why Mars lost its habitable climate.

Satellite data reveal a link between the amount of black carbon in the atmosphere and rates of Antarctic sea ice loss in recent years.

The phase I clinical trials showed stem cell transplants for Parkinson’s disease appear to be safe and might restore dopamine-producing brain cells.