My big problem with climate change is with the models. They are better but are they good enough to plan massive solutions around?
The next problem is with politicians. They have constituencies that will want solutions that don't require inflation, unemployment, or too much cost/pain. The politicians want to keep their positions without causing grief to their constituents and hence lose their positions.
The next issue is anecdotal. Doesn't it seem like it was colder when we older people were growing up? Now it just seems warmer. But are these just natural fluxuations?
When will AI be unleashed to solve this problem? But then, it might just say to get rid of the human race...