Lahar detection system upgraded for Mount Rainier

In the shadow of Washington State's Mount Rainier, about 90,000 people live in the path of a potential large lahar—a destructive, fluid and fast-moving debris flow associated with volcanic slopes.

SpaceX to launch private, all-civilian crew into Earth orbit

SpaceX is set to launch four people into space Wednesday on a three-day mission that is the first to orbit the Earth with exclusively private citizens on board, as Elon Musk's company enters the space tourism fray.

Image: Canada-US heatwave seen by satellite

While heatwaves are quite common during the summer months, the scorching heatwave hitting parts of western Canada and the U.S. has been particularly devastating—with temperature records shattered and hundreds of people ...

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