Scientists looked at a wide range of brain scans to determine how consciousness gets so trippy on mind-altering drugs.

Aging comes with many trials and tribulations, including the decline of the senses: sight, hearing and even smell, taste and touch. Fortunately, exercising the brain strengthens these senses -- just ...

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 ...