2. 1000 Years of CO 2 and Global Warming Temperature (Northern Hemisphere) CO 2 Concentrations
3. 0 100,000 200,000 300,000 400,000 500,000 600,000 Age (yr BP) 300 500 400 600 180 200 220 240 260 280 CO 2 Concentration CO 2 [ppmv]
4. 0 100,000 200,000 300,000 400,000 500,000 600,000 Age (yr BP) 300 500 400 600 180 200 220 240 260 280 Temp. in F° CO 2 Concentration Projected Concentration After 50 More Years of Unrestricted Fossil Fuel Burning CO 2 [ppmv]
5. 0 100,000 200,000 300,000 400,000 500,000 600,000 Age (yr BP) 300 500 400 600 180 200 220 240 260 280 Temp. in F° CO 2 Concentration Today’s CO 2 Concentration Projected Concentration After 50 More Years of Unrestricted Fossil Fuel Burning CO 2 [ppmv]
6. 0 100,000 200,000 300,000 400,000 500,000 600,000 Age (yr BP) 300 500 400 600 180 200 220 240 260 280 Temp. in F° CO 2 Concentration After 45 More Years of current energy use patterns CO 2 [ppmv] Today’s CO 2 Concentration
7. 41% of U.S. manmade Co2 comes from electricity generation.