Mount Etna is one of the world’s most active volcanoes, but there hasn't been an eruption of this magnitude since 2014, according to the National Institute of Geophysics and Volcanology Observatory.

NASA is collaborating with the Alaska Satellite Facility in Fairbanks to create a powerful, web-based tool that will show the ...

Beneath Earth s surface, nearly 3,000 kilometers down, lies a mysterious layer where seismic waves speed up inexplicably. For ...