That is quite ironic. I wonder which causes it faster, more sunlight or more greenhouse gasses. If humans had never polluted, would the earth be on a natural warming cycle. They have been going on for eons.
The sun. If it were carbon we would be much warmer based on the amount in the air. Also most common greenhouse gas is water vaper. If they were serious about it they would be figuring out how to lower it.
Yes you can remove the catalytic converter from your car now and sell it to a scrap metal dealer for 20 bucks. There is a tiny bit of platinum in them.
Clean air causes global warming, polluted air causes global warming... Good grief! Is there anything that doesn't cause global warming? What next? Are they going to tell us that ... oh, I don't know, many be that cow farts cause global warming. Personally I think it's caused by politicians (worldwide)... they're all full of hot air and just love to let it out.