Just in case you need a reminder of what we’re fighting for, here’s a picture from the space shuttle of the atmosphere viewed edge on from space. The orange is the troposphere, or lower atmosphere, with tall thunderstorm clouds to the right. The clear blue is the stratsophere, and the black is…space. That thin envelope is our life support system, and it’s filling fast with co2–in fact, there’s a lot more there now then when this picture was taken in 1983. So, onward!