1. Reach a firm global consensus that this is a problem and we need to do something about it. (I'm looking at you, United States and Australia.) 2. Implement a

1. Reach a firm global consensus that this is a problem and we need to do something about it. (I'm looking at you, United States and Australia.) 2. Implement a top-down program of transition to low-carbon technologies. Switch from coal power stations to nuclear, switch to electric vehicles, and so on. 3. Invest heavily in R&D to find ways to cope with global warming. Heat-tolerant crops, "cloud brightening", flood mitigation, and so on and so on. We must have the necessary tools and technology to hand before we need them.