From March 1967 to July 1972, the United States military carried out Operation Popeye during the Vietnam war. The operation used a type of geoengineering which “seeded” clouds that rained on the Laotian Panhandle. No, this is not a fictitious or dramatic scene from Michael Herr’s Dispatches. Rather an actual action that married the agile technology of its time to a government operation for just over 5 years.