gamma rays

Extremely rare but incredibly powerful gamma radiation explosions would be strong enough to wipe out all life on the planet, say researchers.(Photo by NASA/ESAvia Getty Images)

Researchers: Gamma-Ray Burst May Have Triggered Mass Extinction

Extremely rare but incredibly powerful gamma radiation explosions would be strong enough to wipe out all life on the planet, say researchers.

12/08/2014

Radiation tests are being conducted by helicopter above the Washington D.C. area. (Photo by Athit Perawongmetha/Getty Images)

Nuclear Security Helicopters Testing Radiation Levels Above DC Area

Helicopters have been conducting radiation tests above portions of the Washington, D.C., area using remote gamma radiation sensing technology.

01/05/2013

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