National Geographic's enterprising photographers have helped readers explore and learn about our beautiful world through their images for more than a century. Here is their best work from the past ...
Dec. 10, 2024 — Snow cover in the Sierra Nevada is expected to shrink overall as the climate warms, but avalanche frequency could remain the same or even increase at high elevations. That's bad ...
Our skin has lots of glands from which salty sweat oozes, and it's the evaporation of that sweat that helps keeps us cool. But this also means we can lose water easily, and must replenish it ...