What is the collective noun for a group of volcano scientists? While some tongue-in-cheek responses might be “an eruption of volcanologists” or “a swarm of seismologists,” we’ll stick to “an assembly ...

An Iranian protestor set fire to a banner depicting the country’s Supreme Leader, Ayatollah Ali Khamenei, in the heart of ...

Geologists visited the Kilauea volcano crater in Hawaii to collect lava samples. Officials from the United States Geological Survey (USGS) Hawaiian Volcano Observatory landed on the floor of ...

See 12 of the week’s most interesting images from around the world, as selected by Washington Post photo editors.