* Carbon dioxide (CO2) â Naturally occurring and man-made. 5,505.2 mmts emitted in 2009, GWP = 1 Methane (CH4) - Naturally occurring and man-made. 686.3 mmts emitted in…
Transitioning toward a Carbon Constrained U.S.: The Six Month Congress and EPA Action Plan The Transition toward a Carbon Constrained Economy: The EPA Approach Roger R. Martella,…