What would win over republicans? I mean, if the survival of human civilisation isn't enough, what can you propose?
And conspiracy theorists will have fodder for the next 50 years.
1. Guardian: "President Obama has four years to save the Earth" (2009)
https://www.theguardian.com/environment/2009/jan/18/jim-hans...
Barack Obama has only four years to save the world. That is the stark assessment of Nasa scientist and leading climate expert Jim Hansen who last week warned only urgent action by the new president could halt the devastating climate change that now threatens Earth. Crucially, that action will have to be taken within Obama's first administration, he added.
2. The Independent: "Snowfalls are now a thing of the past" (2000)
According to Dr David Viner, a senior research scientist at the climatic research unit (CRU) of the University of East Anglia,within a few years winter snowfall will become “a very rare and exciting event”.
“Children just aren’t going to know what snow is,” he said.
https://wattsupwiththat.com/2015/11/12/one-of-the-longest-ru...
You can read more about the endlessly repeated warnings about "tipping points" that never come in this fairly partisan but well-researched blog article: https://wattsupwiththat.com/2018/10/08/the-ever-receding-cli...
Eventually we will have a Democrat President...get ready for a deafening wave of silence when that President does as little or maybe even less than our current one. Rest assured if that President is elected during a recession, putting people to work will override climate concerns.
That's my theory anyway.
Tell them the magic elves demand doing your bidding? Because both things are on the same level of rationality? Civilization, as such, is in no danger.
...
To OP: The problem will solve itself if the population of the world goes down enough, whether naturally or through some actual catastrophe. Indeed most of the world's birth rate is low enough that we are well on the way of a solution. Look up which parts of the world still have massive population growth and then see how many liberals you can get on board with trying to reduce that. Good luck.