The obvious issue is providing clean drinking water and sanitation to every single human being on earth at the cost of little more than one year of the Kyoto treaty. ↗
The only things that the United States has given to the world are skyscrapers, jazz, and cocktails. That is all. And in Cuba, in our America, they make much better cocktails. ↗
Climatologists are all agreed that we'd be lucky to see the end of this century without the world being a totally different place, and being 8 or 9 degrees hotter on average. ↗