Lately, business is up. Amid two decades of drought, cloud seeding — using airplanes or ground equipment to waft rain-and-snow-making particles into clouds — is on the rise in the Rockies. Colorado has added three new programs in the last five years. Wyoming, which began seeding in 2014, added an aerial program in 2018. Utah has steadily increased its fleet of cloud seeding equipment, and the state legislature just approved record funding to further expand programs and research.