Images reveal devastation in tsunami-hit Tonga

A volcano that exploded in the Pacific island nation of Tonga has almost disappeared from view, new images revealed Tuesday, with swathes of the country smothered in grey dust or damaged by a tsunami.

Satellite data used to assess tornado damage, understand storms

As people across the Midwestern U.S. take stock of the devastation from a Dec. 10 trail of tornados that blew across the region, data and images from NASA Earth-observing satellites aid first responders and recovery agencies ...

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