I remember reading about chem trails several years ago and thought there was likely something to it. I was concerned they could be using them for something nefarious and still am, but now here's this puff piece from ABC News about cloud seeding and how they can make it rain or snow by spraying Silver Iodide inside of storm clouds.
I'm sure the record snow that CA and other western states had this past winter happened because of cloud seeding. The only problem is no one knows what the long term consequences of doing that are. It sure wasn't good for the people that went through the storms.
Did anyone do a study or something like that before they decided to do this? Inquiring minds want to know.