Today, cloud seeding still involves silver iodide and dry ice. But in the last 60 years, experts have learned a lot more about this method. This has since boosted the understanding of rain and ...

All clouds need “seeds” called condensation nuclei or ice nuclei to properly develop. This could be a speck of dust, clay or pollen in the atmosphere. There are several temperature, moisture and air ...

NCAR estimated it would cost $35 to $107 per acre-feet of water in the North Platte River Basin if a 10 percent seeding effect affected 60 percent of the basin.

BOULDER, Colo. — For the first time since cloud seeding technology was invented in the 1940s, scientists now say they have definitive proof that cloud seeding works. “It’s been a hard one ...

Cloud seeding was pioneered by atmospheric scientist Bernard Vonnegut, brother of famed novelist Kurt Vonnegut.In 1947 Vonnegut’s lab showed that silver iodide was an effective ice nucleus that ...

Adding pollens from corn or ragweed had no effect, but those from stinging nettle, willow or hazel allowed water to freeze at –24° to –25°. And pollens from birch, pine and one type of ...