An active volcano near Alaska's most populated city could be on the brink of eruption, according to scientists who are constantly monitoring a potential threat.

A volcano in southern Alaska is rumbling with seismic activity, which hints at the possibility that it might soon erupt.

Scientists are keeping a close eye on three US volcanoes after their threat levels rose Thursday, suggesting eruptions may be ...

Mount Spurr, a volcano in Alaska, shows signs of increased seismic activity, prompting scientists to warn of a potential ...

Buried several miles beneath East Antarctica's ice, Lake Vostok is one of the largest freshwater lakes on Earth, rivaling ...