Ancient volcanic rocks from Western Australia suggest that water was reaching deep into Earth’s interior more than three ...

In the 45°C heat of the midday April sun, I swing my sledgehammer into the terracotta-varnished lobes of pillow basalt overlooking a sparse, almost Martian landscape. Up close, the rock is freckled ...

An artist's render of Mars. (Kevin M. Gill/Flickr/CC BY 2.0) For decades, our picture of Mars was of a dead desert world. Its magnetic field exists only in sparse patches. Its lakes and rivers have ...

Explore the 25 strangest scientific theories ever proposed, from phlogiston to the hollow Earth. Discover how bizarre ideas ...

In schools across the country, geography has often been folded into other subjects. Even so, the facts we learned about ...

During a hospital resuscitation, a nurse removed an unconscious man’s dentures and placed them in a drawer of a crash cart.

Some of the most extraordinary gems ever found belong to a rare class of diamonds known as CLIPPIRs (Cullinan-like, Large, ...

Bathymetry of a known caldera, Niuatahi, in the Tongan archipelago. (NOAA Vents Program) Deep beneath the ocean waves, dangers lurk. Not from cryptic monsters like the kraken, but from powerful forces ...

When people think of volcanoes, they often imagine destructive eruptions, lava flows, and ash clouds. However, in Iceland, ...

Artificial intelligence can diagnose cancer, forecast cyclones, translate languages and even help spacecraft navigate millions of kilometres through space. Yet ...

Few places on the planet look less like Earth than the Danakil Depression, a scorched, sunken stretch of northeastern Ethiopia where the ground bubbles with acid, glows in shades of yellow and green, ...

Seattle angel investor Charles Fitzgerald argues that Gov.