The endocannabinoid system is found throughout the brain and body and plays a key role in everything from memory and learning to sleep to social behavior. During prolonged aerobic exercise, the body's ...

Each year, National Geographic highlights a collection of the most compelling images captured by Nat Geo photographers over the past 12 months in their "Pictures of the Year." For 2025, Nat Geo ...

From fat cells that stretch like spandex to more flexible muscles, scientists are finding that women’s bodies are just as strong as men’s. A surfer prepares for one of the worst surfing mishaps, a ...