Chemtrails

http://weathermodification.com/ . Agreement Between The United States And Canada Relating To The Exchange Of Information On Weather MODIFICATION Activities March 26, 1975 Treaty Series No. 11 https://publications.gc.ca/site/archivee-archived.html?url=https://publications.gc.ca/collections/collection_2016/amc-gac/E3-1975-11.pdf  . 50 YEARS OF U.N. TRACKING WEATHER MODIFICATION PROJECTS (1952-1999) https://climateviewer.org/history-and-science/geoengineering-and-weather-modification/maps/50-years-of-united-nations-tracking-weather-modification-projects-1952-1999/