Then, a roar from below the water. The towering undersea volcano known as Hunga Tonga-Hunga Ha‘apai had awakened, and on a balmy afternoon in January 2022 it began blasting its insides into the ...

For two years, scientists were perplexed by what could have triggered the 2022 Hunga Tonga–Hunga Ha'apai volcano eruption, which came to be considered one of the largest volcanic events in ...