Cosmic Rays and clouds (Score 1)

Cosmic rays nucleating clouds was the basis for the Wilson cloud chamber, the first way we visualized cosmic rays. THis is nothing new, and it's something that every school child can do. Having said that, it's also something physicists have taken into account when doing climate modeling. I made a cloud chamber as a kid ( dry ice, alcohol, coffee can and black velvet) and these tracks are certainly real and only a tiny part of the story. Unless we have a supernova in the neighborhood, this cosmic ray nucleated cloud formation won't change anything much as the flux variation is in a range that hasn't changed for a very long time. Greenhouse gasses are changeing and unless we prevent the release of methane clathrates from the cold mud, our civilization won't be around for the climate change luddites to enjoy their illgotten riches.