Grist: Environmental leaders offer their elevator pitches for Obama | Environment | guardian.co.uk

[Alarmist Bill McKibben] We need a deal -- but it's a deal that has to reflect the new crucial piece of information about the planet. According to the scientists at NASA -- your scientists, now -- that world doesn't work right above 350 parts per million of CO2 in the atmosphere. Now that you're done with 270 electoral votes, that's the number that's got to focus your thinking.