ST. PAUL -- NASA scientists are estimating the volcanic blast Saturday in the Pacific Ocean had the power of about 500 World War II atom bombs, and the shock waves reached all the way to Minnesota.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. WELLINGTON, New Zealand (AP) — The blast ...

NEW YORK (AP) — When an undersea volcano erupted in Tonga in January, its watery blast was huge and unusual — and scientists are still trying to understand its impacts. The volcano, known as Hunga ...