Mine was to work tax policy to incentivize companies to make all their packaging shiny and white, incentivize people to litter, and disincentivize everybody from recycling.
My friend's was to use a giant rocket to push the earth farther away from the sun
Yes, that would work. I think I was reacting to the phrasing more and imagined something more cartoonish, in particularly where the air conditioner is essentially floating in space.
So something like "put a big fan on the Moon and point it at the Earth" :-)