An implant and wires that reroute nerve signals from a man's brain to his hand allow him to grasp and lift objects, after much practice. But easy, wireless signaling from the brain is still the goal.
Researchers are trying to figure out whether probiotics — the stuff we like to eat in yogurt to keep our guts healthy — could also help pigs, cows and chickens thrive.
U.S. health officials say they are now convinced that Zika virus can target the developing brain before birth, leading to a severe type of microcephaly and other brain abnormalities.
Remittances — money sent home by migrants working abroad — add up to more than triple the amount of official foreign aid to developing countries. And that makes some people unhappy.
Researchers are starting to look at the therapeutic possibilities of psychedelic drugs. A sensation that the self is merging with the world could be due to changes in brain connections, a study says.
For American Indians on the Cheyenne River Indian Reservation in South Dakota, getting health care can take weeks. Indians who move to the city find that access can be difficult, too.
For Native Americans on South Dakota's Cheyenne River Indian Reservation, it can take weeks to get in to see a doctor and hours to get an ambulance after a life-threatening injury.
Decisions about high blood pressure have gotten thornier over the past couple of years. There's no consensus on when to start treatment with drugs. The latest evidence adds to the confusion.
Research shows that depression and anxiety cost the world economy $1 trillion every year. Steve Inskeep talks to Dr. Shekhar Saxena of the World Health Organization about efforts to improve treatment.