ITT: How would /sci/ deal with the environmental impact of the rapidly approaching reality of consumer/civilian space travel?

>As fun as being able to live in the massive nothingness would be, some of spaceX's proposed and extant vehicles cause as much damage to the environment during launch as a car would do in two decades with the amount of trash it burns.

So, how would you go about negating this impact? Solar power? Cleaner fuel options? Enlighten me, /sci/.