1. BERCshop: Closing the Carbon Cycle - Scaling Up Carbon Removal Solutions 18 Feb 2014 Ken Caldeira Carnegie Institution for Science, Dept of Global Ecology Stanford University, Dept of Earth System Science kcaldeira@carnegiescience.edu

3. Archer et al., 2009 CO2 stays in the atmosphere for a long time.

4. If we removed all excess CO2 from the atmosphere today, that would offset only about half the warming Cao et al 2011

7. US per capita CO2 emissions are about 50 kg/day~110 pounds/day

8. Energy system transitions aren’t easy

9. Caldeira et al., 2013

10. Carbon dioxide removal proposals Caldeira et al., 2013

13. American average per capita CO2 production about 50 kg CO2 / day about 110 pounds CO2 / day about twice level of EU, China

14. GOES East, 18 July 2013