His proposal involves two vast engineering ambitions — one focused on solar power, the other on climate control.

The first part of Musk's plan involves tens of thousands of satellites that would collect solar energy directly in space and harness 100 gigawatts per year. The second part of Musk's vision goes further. Instead of just harvesting sunlight, these satellites could also control how much sunlight reaches Earth. The satellites would act as planetary thermostats. 

Many people have tired of doomsday narratives, chemtrails blocking the sun, and billionaires playing God. A critic noted that this proposal is solving an imaginary problem with a non-imaginary destabilization. What could possibly go wrong?