NASA creates clouds over Alaska in conducting weather experiment Zero Geoengineering Posted on December 15, 2016 by Jolie DianeNovember 25, 2017 Bangor Daily News 1978 Weather Modification History Weather Modification History “The purpose of the experiment is to enable scientists to learn more about the complex movements of electrified natural particles in and above the earth’s ionosphere by plotting the movement of the barium particles.” Share this:FacebookTwitterTumblrRedditEmail Related