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Cloud seeding isn't new. It was done by the U.S. during the Vietnam War (Operation Popeye) to increase rain and disrupt enemy troop movement.
But when weighing its potential use to combat climate change, scientists and intel officials are apprehensive.
But when weighing its potential use to combat climate change, scientists and intel officials are apprehensive.
Filling jumbo jets with sulfur dioxide, a known coolant of radiation, and spraying it into the stratosphere carries risks that are still not fully understood. Understanding how pervasive the risk is becomes doubly complicated as all of this plays out in a race against time.
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