Cloud seeding is a form of weather modification!
And it is being used by NASA and officials in drought prone areas (nowadays California) to get more rain.
The usual intent of cloud seeding is to increase precipitation (rain or snow), but hail and fog suppression are also widely practiced in airports.
Since 1981, the Santa Barbara County Water Agency conducts a weather modification program better known as “cloudseeding” to augment rainfall and runoff in watersheds behind the major water reservoirs. In other words, they disperse substances into the air to enhance cloud condensation or ice nuclei.
In 2009, Sierra Nevada officials used a silver iodide solution to fight another California drought. And the State of California (and Colorado) still plans using weather modification as part of its new 2013 Water Plan.
Moreover, drones bring in new economical solutions for cloud seeding. The state of Nevada was one of six selected test sites by the Federal Aviation Administration (FAA) in December 2013. The Nevada government is hoping to break into the global weather modification international market by working with this new technology. Indeed, this strange method is used worldwide.
I this video, watch NASA launch a massive rocket that results in a downpour of rain:
The most common chemicals used for cloud seeding include silver iodide, potassium iodide and dry ice (solid carbon dioxide). Silver iodide can cause temporary incapacitation or possible residual injury to humans and mammals with intense or continued but not chronic exposure. However it has no or only negligible environmental impacts.
So weather modification is really happening! The chemtrail conspiration theory is living!