"You have water in clouds... 80% of precipitation happens because water in clouds freezes onto natural dust or bacteria, forming heavy snowflakes that fall. Rainmaker and cloud seeding mimics this—if you put material in the cloud with a crystal structure like ice, the water freezes onto it, grows, and falls. We use radar to find liquid water in the clouds, then launch drones that disperse aerosol particles. The same radar shows the water freezing and growing into bigger drops. For every pound we put up, we get over 40 million pounds of water down. The agent we use is silver iodide—its crystal structure is almost identical to ice, and we use about 50 grams per 100,000 acres."
@ADoricko
@PhysInHistory To me, there is only now. No before. No after. Everything is now. Time is made up to help us cope with what our brains process as past present and future. But in reality there is only 1 constant and it is the "now".