As man has emitted more CO2, plants have taken it in, to create more life on Earth. There has been no more CO2 left in the air for 200 years! So what causes Global Warming and Climate Change? My money is on nature, but other people say man must be involved.
The only abnormal heat source is nuclear power! That turn U ore, into heat, and toxic waste. And occasionally torch half a continent, and kill the life there. So THEY are the source of Global Warming!
Since 2005 the world climate is in a natural cooling phase. If there is any warming, nuclear fission is the source. The agents of lethal death.