I know how to fix our planet's carrying capacity. Launch most of the top 2% of people into space (a demographic I may fall into, mind you). Enjoy what they leave behind as you prepare for a nuclear bombardment of all continents but Antarctica (I claim first dibs to fallout shelters there). Next, wait a hundred years. Return to your normal places on Earth (or tell your posterity to). Kill any survivors you find. No more carrying capacity troubles. And, on a bright side, it only kills 99.9% of Earth's population. I accept donations of fallout shelters.