It's a bird, it's a plane, it's a cannon shooting dry ice at a cumulonimbus!
Cloud seeding is a type of weather modification that involves introducing particles, like salts, into clouds in order to induce the formation of ice nuclei.
Clouds need ice nuclei to form precipitation, such as snowflakes.
Cloud seeding is done with generators on the ground, via airplane, or with rockets or even cannons.
The most common substances used to seed clouds are dry ice and silver iodide.
Clouds are made of water droplets and ice crystals that form around bits of dust or salt in the atmosphere.
They form in moist air and are suspended by air currents.
When clouds collect too much moisture, it falls to the earth in the form of rain or snow.
Research indicates that cloud seeding can produce an extra 5 to 15 percent of precipitation over the course of a season.
Years of drought, overharvesting of water resources, and rising temperatures due to global warming have left rivers and snowpack levels low in many areas of the world.
