A major U.S. city is under threat from a potential volcanic eruption after more than 20 earthquakes were recorded in Alaska.

An explosion on Mount Spurr could generate massive cloud of ash, which could mess with airplanes and cause issues for humans.

The Alaska Volcano Observatory (AVO) has detected gradual and consistent ground inflation, a sign of potential magma accumulation beneath the surface. The AVO said an eruption was "likely ...

The league of experts and scientists who have spent decades keeping watch is being decimated by the Trump administration’s staffing cuts.

Researchers found that a potential powerful earthquake combined with rising sea levels could lead to a mega tsunami.

If an eruption happens, it would likely occur at Crater Peak, shown in the background of this summit photograph. Photograph by Matt Loewen, Alaska Volcano Observatory, U.S. Geological Survey ...