What worries me the most is that some day, a mad billionaire will decide to implement such measures without anyone's approval. That's why we need to reform the system such that it is impossible for anyone to be a billionaire. Nobody should have the resources or power to unilaterally transform the earth without majority consensus.

The problem must be solved at the individual level. We need an efficient economic system which gives individuals enough financial surplus such that they can afford to start worrying about such issues as climate change.

Most people are too busy trying to survive the next day to even think about such long term issues as climate change. It became the elites' problem because nobody else has the surplus resources necessary to do anything about it... Even though the problem would be far easier to solve on an individual basis if each individual was responsible for negating or offsetting their own environmental impact.