Cold War-Era Satellites Spy on Himalayan Glaciers

The Cold War may have ended decades ago, but spy satellites' data from that era are now being used for a new mission: tracking environmental change in the Himalayas. Using declassified spy satellite data, researchers have created 3D images of glaciers across the Himalayas, scientists said. The new 3D maps revealed how the Himalayas' glaciers have behaved in a changing climate.