Operation Recolonize

Operation Recolonize was the plan enacted by the BnL Corporation to clean the excessive amounts of garbage off the Earth's surface, and eventually resettle humanity upon its homeworld. Much of the cleanup operations were handled by WALL•E units, who collected and packed the trash into solid cubes. After a few years, however, the operation was deemed a failure by Shelby Forthright, BnL's CEO. He declared Earth too toxic to ever support life again, shut down the reclamation efforts, and secretly sent Directive A-113 to the Auto units aboard human-carrying spacecraft.

Little did Forthright know that Operation Recolonize actually was successful, as plant life began to grow amongst the ruins of cities. Once humanity returned back home after 700 years away from Earth, they quickly adapted to the environment, began farming, and flourished once again.