Politicians, catapults, & the sun.
Put the first into the second & fling them all into the third. Don't stop there though, lawyers, lobbiests, & corporate executives should be next on the launch list. Eventually we can weed out enough of the oxygen wasters to reduce our carbon footprint, hopefully enough to save the planet for the rest of us to survive.
I wonder how much it costs to build a catapult? Maybe I should start a GoFundMe page? Hmmmmm...