The Wyoming Association of Conservation Districts wants to try cloud seeding to increase snowfall over the tall Wind River Range (the highest mountains in Wyoming).
Because the Winds are mostly designated Wilderness, this human modification is controversial. However, by far the largest change to the range is the huge increase in human pollution just beneath the Winds from the massive natural gas developments.
Cloud seeding is controversial because if it works it can harm stream beds and wildlife habitat and probably robs downwind areas of precipitation. However, Wyoming has been seeding clouds over the Salt River Range for years, and storms usually pass over this Idaho/Wyoming border ranger before reaching the Winds. Would cloud seeding even things out?
Story in the Jackson Hole News and Guide by Cory Hatch.