Andrew Revkin brings attention to NOAA’s new graph detailing the recent rise in atmospheric CO2 concentrations in its historical and pre-historical context (it goes back 800,000 years). This is a case of effective data presentation, to say the least.

In terms of scale and rate of change, civilization has not experienced a shift in CO2 concentrations of this magnitude. We need not even whisper that there may be serious security implications. The science makes the case loud and clear.