neuroscience

Scientists are learning how the party drug ketamine relieves depression so quickly — and why its effects fade over time.

Fresh water quenches thirst almost instantly, but salt water doesn't. New research shows how cells in the gut and on the tongue help the brain keep just the right concentration of salt in our bodies.

Nearly two years after the U.S. said diplomats in Cuba had been injured in a series of "health attacks," many scientists say there's still no proof anyone was injured.

Some kids seem resilient from the start — readily able, like dandelions, to cope with stress and adversity. But pediatrician Thomas Boyce says biologically reactive kids need more support to thrive.

Growing up, Judith Grisel struggled with alcohol, marijuana and cocaine. Now as a neuroscientist, she's working to understand the biological basis of addiction. Her new book is Never Enough.

Researchers say the metabolism of a woman's brain remains higher than a man's throughout a lifetime. And that may help with late-life creativity and learning.

Scientists say comedian Lewis Black has a lot in common with fruit flies. They're both really good at acting angry, probably because human anger has roots in animal aggression.

Adorable babies and cute puppies can make us happy. But researchers say their cuteness can be so overwhelming that it unleashes some ugly thoughts.

Research suggests the winter blues are triggered by specialized light-sensing cells in the retina that communicate directly with brain areas involved in mood.