Putting people into sleep mode is a sci-fi concept that's a lot closer to becoming real than you might think. Erin Belback is part of an ongoing human trial backed by NASA that aims to replicate the ...

Your brain can’t always tell the difference between a jump scare and a real threat. But what’s thrilling for some people can be harmful for others. Whether you’re in real danger or just watching a ...

When you start moving, your heart rate spikes, blood flow changes, and your brain becomes more alert. A woman begins her morning workout, a critical time when the body and brain rapidly adapt to meet ...

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 ...