The risks of burning carbon fuels are at least: A 10 % chance of serious climate harm. (planet3.org)
Peter directs the sustainable food and farming program, developing strategies to reduce health, environmental, and climate harms from production of our food and to promote a more environmentally sound agricultural system. (earthjustice.org)
Global warming potentials, which are meant to be a kind of «currency exchange rate» between amounts of methane and CO2 purporting to yield equal climate harm, do a very poor job of representing the reversible / irreversible dichotomy between methane and CO2 (as discussed in the Metrics section of my paper with Susan Solomon. (dotearth.blogs.nytimes.com)