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News
Heartbeats could keep pacemakers running after their batteries die
6+ day, 14+ hour ago (1217+ words) A battery-free pacemaker can harvest energy from each heartbeat, potentially allowing future devices to work far longer without replacement. Inside the lower right chamber of the heart, the newest kind of pacemaker is a titanium capsule with no wires attached,…...
Smart glasses use flashing light to sync brain waves linked to memory
1+ week, 1+ day ago (1061+ words) A new wearable approach to brain stimulation produced an unexpected result that could reshape how flickering-light therapies are delivered. When a light flickers at just the right speed, the brain’s electrical rhythms begin to match its beat. Researchers are studying…...
AI chatbots have become confidants for one in five students
1+ week, 3+ day ago (1177+ words) A survey of nearly 40,000 teens finds that kids who turn to AI chatbots for mental health support are more likely to be struggling. When something goes wrong in a kid’s life, the easiest listener in the house is now a…...
One of medicine’s rarest tumors appeared in saber-toothed cat spines
3+ week, 1+ day ago (1149+ words) Fossils from the La Brea Tar Pits suggest some saber-toothed cats suffered from painful spinal growths that may have made hunting difficult. The La Brea tar pits were the ultimate predator trap: a plant-eater would blunder into the asphalt, cry…...
Video games get blamed for teen depression, but one may help prevent it
3+ week, 1+ day ago (1010+ words) Can a video game help prevent teen depression? Students who played one mental health game reported fewer symptoms a year later. Teenagers hear a lot about what video games do to their mental health, and little of it is good....
Screen time may not be as bad for young brains as we thought
4+ week, 15+ hour ago (1002+ words) Teens who reported more screen time did better on some memory and thinking tests. But the results only show a link. Children’s routines blend schoolwork, games, social contact, movement, and rest across physical and digital spaces. Screen time is therefore…...