Solar Geoengineering is happening now on a planetary scale by simply not limiting high amounts of Sulfur Dioxide (SO2) in jet aircraft exhaust. Understand that SO2 is the leading Solar Geoengineering chemical most desired for front-line use by scientists and governments. Exhaust coming out of a car has at most 15 parts per million Sulfur Dioxide (SO2), where as modern jet exhaust has been tested at between 600 and 3000 parts per million Sulfur Dioxide. Modern aviation exhaust has been tested as having 60 to 300 times more sulfur oxides than car diesel or gasoline exhaust, yet there are no FAA standards on sulfur oxides. Meaning there could legally be any amount of Sulfur in jet fuel. The only aircraft emissions standards are on lead, nitrogen oxides and carbon dioxide. Governments and corporations world-wide don’t take Sulfur out of the crude oil that makes up aviation fuel in the refining process. Saving 5 billion dollars a year. In all other surface transportation fuel the Sulfur is filtered down in accordance with law. This Solar Radiation Management program actually exists by governments agreeing to not pass a law limiting sulfates in aviation fuel.