I have the solution. At a predetermined time, everybody in the US should jump up. This will nudge the earth's axis and change the temp. We can repeat periodically to get the temp we want. If it starts getting too cool then China can jump for a while.
you need people on both hemispheres or you will be tilting the world :)
I also think we should all walk in the same direction to slow down the world a 30h day might give me enough time to do everything I need