If global warming ever becomes a threat, there is an easy solution. All we need to do is drop a nuke into each of a few giant dormant volcanoes in islands in the ocean. When the volcanoes erupt anew, it will be like Krakatoa back in 1883 -
https://en.wikipedia.org/wiki/Krakatoa.
All kinds of rocks and dust will be ejected into the atmosphere, blocking the sun, and cooling the land off so much that we will barely be able to grow crops.
"Climate Change" talk is simply a way to get people to be fearful, and turn their money and authority over to the "scientists" who will supposedly do something about it. But all they will really do is take control and make slaves of us.
Forget the fear. Any day that we want to drop a nuke into a few dormant volcanoes, is the day that we can catapult ourselves into an ice age.