How do clouds form? To explain cloud seeding, first you need to know how clouds form. Clouds form when water vapor and gas rises, cools and condenses into liquid water droplets.

In an effort to create more rain, the government of China turned once again to cloud seeding, a controversial technique that aims to target precipitation in key areas.

Cloud seeding is a weather modification technique that employs chemicals to stimulate the formation of ice crystals or raindrops within clouds.

Silver iodide and dry ice are examples of “glaciogenic” agents, and they only help to produce rain in clouds of sufficiently low temperatures.

Cloud seeding has become a hot topic for debate, but it's actually a technique we first discovered in the 1940s. Here's what you need to know about it.