Geology

A new study suggests a proto–Colorado River filled a large basin before spilling westward to set the Grand Canyon’s modern path

Here’s how scientists drilled 8,000 feet through ice to place the world’s deepest seismometers

Science writer Hanne Strager explores how the trailblazing Danish seismologist Inge Lehmann overcame self-doubt to discover that Earth has a solid inner core, overturning the long-held belief that it was liquid

Scientists have found the oldest direct evidence for tectonic motion on Earth by more than half a billion years

New satellite data come up dry as the search for lunar ice continues

After decades of debate, researchers say that they have found the clearest evidence yet for this rare form of carbon

Over nine hours, Kīlauea released 16 million cubic yards of lava and sent a cloud of ash beyond 30,000 feet

A continental collision trapped oil within what is today Iran. The same collision explains why that oil is trapped behind the Strait of Hormuz now

An experiment to quantify the amount of the universe’s lightest element in Earth’s core suggests that the planet’s water has mostly been here since the beginning

The rocks used in the Olympic sport of curling come from one island in Scotland and one quarry in Wales. What makes them so special?

It turns out that continental breakups are just as messy as human ones, with the events leaving fragments scattered far from home

Greenland’s mineral resources hold massive economic potential, but accessing them isn’t easy