The reason "why" is NOT clear.....nobody disputes that the climate is changing (previously sworn to as "global warming").....as always.
Remember hair spray/R-12/ozone depletion relationship? Science was clear there too. Good thing Ma quick using that stuff, huh?
Ever look up what killed George Washington? Science was clear then too.
The only thing that IS clear is that people who suck up the "science" without question need to gain a little "open eyes" experience. And your pissy little name-calling bitch session shows that you certainly lack it.