This is one good reason why people should vote this time out. You can bet if the Republicans take the white house by hook or by crook (by say, sneaking in with a plurality through third party voting) they will set back work on climate change incalculably. Trump is promising to back off the Paris agreement and I'd guess that's one he could actually get done quite easily. The whole GOP is all in with him on that one.
You may hate the Democratic Party even more that the Republicans. But on this issue there is a huge difference and it may be the most important issue of all.