Flight to oblivion
I’ve read before that air travel is a major source of CO. I have an idea on the air travel. The source and destination of the flight share the estimated load of CO from a flight. Any Kyoto signee not received flights from a non-signee. This would men the US travel industry would become domestic only except the other straggler. Governments would share the burden of CO from aircraft and they might get in the game of making it cleaner.
