TOKYO — Mount Fuji hasn’t erupted since 1707. But for Volcanic Disaster Preparedness Day, Japanese officials have released computer- and AI-generated videos showing a simulation of a potential violent ...

Large clouds of smoke billow from Japan’s most famous mountain. In no time, volcanic ash spreads to the heavily populated capital of Tokyo, fogging up the air and blanketing buildings and vehicles.

Villagers have been evacuated and flights grounded following a volcano erupted, spewing ash six miles into the air. Indonesia’s Mount Lewotobi Laki-laki erupted twice on Wednesday, first at 1:35 a.m.

When the sixth-strongest earthquake ever recorded hit Russia’s Kamchatka Peninsula last week, it triggered tsunami warnings around the world as waves rippled across the Pacific as far as the U.S., ...