Planet Earth

Iceland's Reykjanes Peninsula is now in a new era of volcanic eruptions that will last for up to 500 years, and the building magma beneath Sundhnúkur and Grindavík is part of this millenia-long cycle.

Russia's Klyuchevskoy volcano, which is the tallest volcano in Europe and Asia, violently erupted on Nov. 1 and left behind a trail of smoke and ash that was photographed by NASA satellites.

Opinion Opinion: State-of-the-art climate models show warming stops once we stop emitting carbon. That means there's still time to stop the worst impacts of climate change.

Authorities in Iceland have warned that a volcanic eruption is imminent, with the town of Grindavík, close to the country's famous Blue Lagoon resort, evacuated.

Climate change is raising sea levels, and many low-lying islands are at risk. But determining which communities will be first to leave is impossible to answer.

Mountains form in a variety of ways, some of which geologists are now just starting to understand.

A newly-formed island off the coast of Iwo Jima in the Pacific Ocean was spotted in satellite images after it emerged during an underwater volcanic eruption at the end of October.

Climate change and rising sea levels could cause similar floods along the West Coast each year without El Niño by the 2030s, NASA warns.

A Hebrew note found in the Vatican Library describes a 1446 earthquake swarm previously unknown to seismologists.

Scientists participating in one of the longest-running active scientific experiments have discovered a surprising hybrid plant hiding among seeds buried at a secret location on a university campus since 1829.