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Mount St. Helens erupted, killing dozens and forever changing how the US monitors earthquakes. The volcano is still active ...

Florida's largest cities are facing rising sea levels along the Gulf and the East Coast, according to new data.

On May 18, 1980, the United States experienced the deadliest and most destructive volcanic eruption in its history.

The anniversary of the eruption of Mount St Helens gives so many pause, recalling where they were that day, May 18, 1980.