More on Carbon Dioxide Trends

Here's a really nice animation of the global trends in carbon dioxide through time, from the NOAA Earth System Research Laboratory. It helps to bring home just where we are now in terms of prevailing carbon dioxide levels, compared to how things were in the recent to distant past. (Ed Dlugokencky and Pieter Tans, NOAA/ESRL http://www.esrl.noaa.gov/gmd/ccgg/trends/history.html