I believe that a small minority could turn things around. If about 3 % of the population in the rich world would donate $100 per month, we could use that money

I believe that a small minority could turn things around. If about 3 % of the population in the rich world would donate $100 per month, we could use that money to force the other to change. How? One example is to remove all coal power plants (which are responsible for 25 % of the greenhouse gas emissions) by building wind farms. This would drive the price of electricity down and make coal unprofitable.