My friend says you should . <| sep |> I know what I ' ll do ! I ' ll blackmail my kid into calling me ! I ' m sure he still cares after 5 years . <| sep |> It ' s ability like ME 1 . IIRC the game informer article covered this . <| sep |> Humans currently add 36 Gt of CO 2 from ancient sources of carbon every year . Natural sinks can absorb 20 Gt of that , at most . Since 1860 the addition of ancient carbon to the atmosphere has increased concentrations from 285 to 404 this year . Is that in dispute ? We have seen the rate of sea level rise increase from an average 0 . 07 mm per year for the 2000 years prior to 1860 to 3 . 3 mm per year now . Is that in dispute ? We are seeing a global average temperature increase of 0 . 17 C per year . Is that in dispute ? As Neil deGrasse Tyson put it , quite simply . Incoming light from the Sun hits the surface . The Earth absorbs much of that energy , which heats the planet up and makes the surface glow in infrared light . But the carbon dioxide in the atmosphere absorbs most of that outgoing heat radiation , sending much of it back to the surface . This makes the planet even warmer . That ' s all there is to the greenhouse effect . It ' s basic physics . Just bookkeeping of the energy flow . There ' s nothing controversial about it . Is that in dispute ?