This is 100% uninformed opinion (sorry, HN) but allowing climate action to become a political issue (and a losing political issue at that) was the core mistake the environmental movement made in the 90s and beyond. If we had created a broad-based constituency for climate action, say, working with industry to build nuclear power or supporting natural gas to displace coal or even funding more conservative think tanks,…
What the hell are you talking about? What?!? This entire issue was a solved problem with a simple carbon tax (which is a conservative leaning policy) and then one party decided their strategy was going to be deny, then delay, then pose it as a fait accompli.
I was pretty damn conservative on a lot of issues when I started college... as it became more and more clear to me -- from taking earth science classes -- that climate change was very obviously happening and that we've known about it since the 1960s and that no serious person trying to suggest that it's not being made worse by human activity, that's when I started to thing that the Republicans were not going to take this issue seriously, ever.
Any centrist or conservative person who takes the issues seriously has no idea what to do because on party just decided to just say "lol, who cares." How in the hell is that environmental movement's fault!?! You look at the UK and environmentalism is not a partisan issue. Here, we have idiots holding snowballs in congress trying to score cheap political points.