At the top of a 120-foot-high cliff in Tonga sits a humongous rock—and at more than 650 feet inland, it’s staggeringly out of place. Now, scientists have modeled how this massive boulder could ...

Because Tonga was settled only around 3,000 years ago, no humans were around to witness this event. “It’s older than the human occupation of Tonga,” Mr. Köhler said.

A new simulation of the megatsunami created by the 2022 Hunga Tonga-Hunga Ha'apai eruption explains why it wasn't more deadly.

A 7.0 magnitude earthquake struck off the coast of Tonga early Monday. The island nation felt six aftershocks but did not immediately report damage.

TOKYO — A strong 7.1 magnitude earthquake hit near Tonga, prompting an initial tsunami warning that was later lifted for the Pacific island country. Related video above: How to keep an eye on ...

The Tonga eruption explained, from tsunami warnings to sonic booms The volcanic plume generated record amounts of lightning before producing a blast heard thousands of miles away. Here’s what ...

The Tonga underwater volcanic eruption rivaled the strength of the largest U.S. nuclear bomb and produced a "mega-tsunami" nearly the height of a 30-story skyscraper, a recent study finds.

A 7.0 magnitude earthquake has caused slight damage in Tonga and brief evacuations before the threat of a tsunami passed.

A strong 7.1 magnitude earthquake hit near Tonga, a country in Polynesia made up of 171 islands with a population of a little more than 100,000 people.

A strong 7.1 magnitude earthquake hit near Tonga, a country in Polynesia made up of 171 islands with a population of a little more than 100,000 people.