The cloud seeding believers
They might not know it, but golfers in Los Angeles, farmers in the Imperial Valley and retirees in Phoenix are spending hundreds of thousands of dollars on cloud seeding in Wyoming, Colorado and Utah. Making rain may seem a bit like alchemy, but the practice has been around since the 1940s, when engineers at General Electric began experimenting with dumping dry ice into clouds from airplanes. Water districts and ski resorts around the West got into the practice in the 1970s, shooting silver iodide into winter clouds from mountain-top cannons
