6 is my next trip . I did 4 last time and it was amazing . <| sep |> he actually showed up in the silver surfer secret wars tie ins , pretty cool stuff <| sep |> The first is trivial , humans are adding CO 2 at 3 ppm per year , we are now at 404 ppm , which is 119 ppm above preindustrial levels prior to 1850 , it ' s been nearly three million years since it ' s been at these levels . CO 2 absorbs IR light . There is mountains of evidence of the effect , temperature increase of 0 . 17 C per decade and accelerating , and rate of sea level rise of over 40 times the rate for the 2000 years prior to adding CO 2 . We are on course to reach 550 ppm by 2050 and 900 ppm in 83 years . Good luck on the second . Edit Here ' s a summary of the evidence . reportar 5 syrSYRAR 5 FINALfull . pdf There are many of thousands of sources referenced .