If we could put our planetary clock on fast forward, Earth’s surface would writhe with activity. Continents would scurry across the globe, oceans would open and close, and new mountains would shoot up ...

Mountains such as Everest soar miles into the sky. Those pictured below are the tallest measured from sea level to their summit. The farthest point from Planet Earth's center belongs to Ecuador's ...

Breathing quickly in the thin mountain air, my colleagues and I set down our equipment. We’re at the base of a jagged outcrop that protrudes upwards out of a steep gravel slope. The muffled soundscape ...

The Himalayas shape our planet's climate in ways that reach far beyond their towering peaks. These magnificent mountains ...

The ice that has long defined South Asia's mountain ranges is dissolving into massive new lakes, raising the specter of catastrophic flooding. Gokyo village, nestled beside a lake fed in part by Nepal ...