File:Greensmiley2.jpg Tip: click the four arrow symbol, bottom right of each embedded video (where available) to view video full screen. Video:Time history of atmospheric CO2 (2011 update) Video:Time-lapse history of human global CO2 emissions Video:'Revolutionary' CO2 maps zoom in on greenhouse gas sources Video:Vulcan CO2 flyover on Google Earth * [ Future CO2 levels] * CarbonQuilt's channel on youtube * [ Visual depictions of CO2 levels and CO2 emissions], on skepticalscience.com, Posted on 18 February 2010 by John Cook Open CO2 (CO2