“a global warming trend that has been going on consistently since prehistoric times”
Actually that is not true. The earth got COLDER between about 1400 and 1600. And the consequences of doing nothing could be catastrophic. A single hurricane in NYC caused $50 billion in damage. Now, imagine that storm with the sea level just a few feet higher — South Brooklyn, South Staten Island, and the Rockaway Peninsula are gone. (Interestingly, those areas mostly vote Republican!) South Florida is doomed and so is the entire Mississippi River south of Baton Rouge, which combines to be America’s largest port. Bangladesh will have a hundred million Muslims pouring into India and Myanmar. The Pacific Island nations that consistently vote for Israel at the UN will cease to exist. I could go on and on. It is NOT doing something that could destroy the world economy, with the US first.