Since Edmund Hilary and Tenzing Norgay first reached the summit of Mount Everest in 1953, conquering the world's highest peak ...

Jan Beutel was half-watching a live stream of Kleines Nesthorn, a mountain peak in the Swiss Alps, when he realized its cacophony of creaks and rumbles was getting louder. He dropped his work, turned ...

BLATTEN, Switzerland — Jan Beutel was half-watching a live stream of Kleines Nesthorn, a mountain peak in the Swiss Alps, when he realized its cacophony of creaks and rumbles was getting louder. He ...

This quiz will explore the science behind the scenery, the facts behind the familiar, and the wonders that make Earth a living planet.

The enormous near-Earth asteroid (887) Alinda has made its closest approach to our planet in decades, and it's about to peak in brightness in a rare once-in-a-decade event. Here's how to watch it live ...

A sudden halt to Earth's rotation, though improbable, would trigger catastrophic events. Inertia would cause widespread ...

The Earth formed 4.6 billion years ago and has been continuously changing ever since. For instance, the Himalayas continue to ...

Our closest celestial neighbor shines brilliantly in the night sky, often mistaken for a star, yet beneath its dazzling glow ...

There are runners, and then there are ultra-trail specialists, the rare breed who willingly torture themselves in some of the harshest conditions on the planet. These aren’t the folks pounding out ...