re: #112 Obdicut

As Charles has noted, since 1896, when the heat-trapping properties of CO2 were noticed.

Seriously, dude, why not just go and read the threads Charles has made on the subject instead of asking people to answer the basic questions for you here in this thread?

The climate has been changing for millions of years and they just decided a few years ago that global warming is the fault of humans? That’s why I don’t believe it yet.