When I was 10, my dad took me camping to see the Perseids meteor shower,” says John O’Donnell. “They’re one of the most ...

One of California's latest national monuments is an enormous, pristine section of mountains, lakes, and lava flows in the ...

A 2022 satellite photo shows smoke rising from a caldera on Tofua, highlighting the "looming threat" of the volcanic island.

There are four main types of volcanoes: cinder cones, composite or stratovolcanoes ... and changes in gravity and magnetic fields. Volcanoes particularly active in Pacific Ring of Fire 1. The Ring of ...