Well, to be fair to Musk, there's also the whole "switch to renewable energy and transportation, since putting all this CO2 into the atmosphere is a dangerous e

Well, to be fair to Musk, there's also the whole "switch to renewable energy and transportation, since putting all this CO2 into the atmosphere is a dangerous experiment that must stop, or the future will be terrible." Somewhat closer to Earth and immediately necessary for civilization's future.