A huge terraforming company you give a huge amount of money to make them come and save your planet by making it great and green again. Too bad that they will probably also fill your planet with golf courses, rally tracks and whatever it is what rich people do. And it more than once happened that Hathor industries accidently turned a planet into a dead waste, or turn the magnetic fields upside down, killing entire populations by doing so. So hiring them is not without risk.
A painting I made for a workshop I'm giving soon in the Netherlands.
I have also attached the 3D model and a process gif.