|1920s rain dance, probably at the Prairie Band Potawatomi agency in Kanas (WIkipedia).|
The concept of cloud seeding has been around since the 1940s, when Bernard Vonnegut (brother of author Kurt) discovered that silver iodide could produce ice crystals when introduced into cloud chambers.In those heady days, cloud seeding was heralded as a way to produce rain where there was none, boosting crop yields and filling reservoirs to the brim.That was a wild overstatement, and cloud seeding's reputation suffered for it.
• • •That's pretty impressive. Read the whole thing.
Western Weather Consultants claims that its two seeding operations in the High Country generate between 180,00 and 300,000 added acre-feet of water per year, and that has been backed up by independent studies.