geology

Plate tectonics illustration.

Before plate tectonics, the Earth may have been covered by one giant shell

Mar 10, 2017

Tettegouche State Park in Minnesota

The Midcontinent Rift could have split North America apart a billion years ago. Why didn’t it?

Nov 4, 2016

Mark Robinson traveled with a team from the Goma Observatory to set up monitoring equipment. He was in the volcano just days before it sprung back to life.

One of Africa’s most active volcanoes is showing new signs of life

May 2, 2016

Want to find a meteorite? Antarctica might be the best place to look.

Feb 5, 2016

A woman carries her belongings as she walks over a collapsed house in Bhaktapur, Nepal, on April 27, 2015.

Nepal’s quake preparations not enough, despite 20 years of warnings

Apr 27, 2015

Don Johnson, a former park ranger, on a fossil walk near his home on the Bonavista Peninsula in Newfoundland. As a kid, he used to climb on these rocks, but he says people here never know the fossils in these rocks were so significant.

A fossil flexes its muscle in Newfoundland, but it can’t keep thieves away

Jan 30, 2015

A NASA graphic illustrating the interior of the Earth.

How the Earth made its own water — out of rocks

Jan 7, 2015