Volcanoes near Usulutan, El Salvador are featured in this image photographed by an Expedition 23 crew member on the International Space Station. The Pacific coastline of much of Central America is ...

In 2012, steam began to rise from beneath the cracked concrete of a telecommunication station at the summit of Pico Basile volcano on Bioko Island, Equatorial Guinea, in western Africa. The steaming ...

Mapping glaciers was once a difficult and arduous job. So was monitoring volcanoes for the grumblings and rumblings that might herald an eruption. In recent decades, the old methods of hiking boots ...