Scientists have identified specialized brain cells that create two distinct kinds of thirst. Some cells respond to a need for water alone, while others produce a craving for water and salt.
If you listen closely to giggles, guffaws, and polite chuckles, you can discern a huge amount of information about people and their relationships with each other. This week, we talk with neuroscientist Sophie Scott about the many shades of laughter, from cackles of delight among close friends to the "canned" mirth of TV laugh tracks.
Scientists say new drugs are on the way for patients with ALS. The latest is a two-drug combo that appears to slow the progression of the fatal nerve disease with a modest but meaningful benefit.
When scientists revved up the production of an enzyme called GPLD1 in older mice, it stimulated nerve growth in their brains and the animals navigated a maze better.