1. Global Climate Change: The Heart of the Matter

2. What we can see (observations) What is causing it (causes and evidence) What can happen (projections) What we can do (responses) The Heart of the Matter

3. What we can see (observations) What is causing it (causes and evidence) What can happen (projections) What we can do (responses) The Heart of the Matter

4. http://data.giss.nasa.gov/gistemp/graphs/ Warming is Unequivocal

5. http://data.giss.nasa.gov/gistemp/maps/ And Not Uniform

6. http://www.climatecentral.org/blogs/roya l-weddings-and-climate-change1/

7. NASA 2003 European Heat Wave

8. After Schaer et al., 2004 Switzerland Summer Temperature 2003 European Heat Wave

10. What we can see (observations) What is causing it (causes and evidence) What can happen (projections) What we can do (responses) The Heart of the Matter

11. Ice Core Records

12. Radiative Forcing

13. IPCC, 2007 Black = Observed Gold = Human and Natural Forcings Blue = Only Natural Forcings Fingerprint Analysis

15. What we can see (observations) What is causing it (causes and evidence) What can happen (projections) What we can do (responses) The Heart of the Matter

17. UCS Projected Changes in CA Summer Temperature

19. Diminishing Sierra Snowpack Percentage Remaining, Relative to 1961-1990 UCS

20. Tipping elements in the Earth system Lenton et al., PNAS 2008

21. What we can see (observations) What is causing it (causes and evidence) What can happen (projections) What we can do (responses) The Heart of the Matter

22. Mitigation Adaptation

23. Climate Stabilization

24. Raupach et al., 2007 Regional CO 2 Emissions 2004 2000-2004 Growth

25. Davis and Caldeira, 2010

28. IPCC, 2007 28 Extreme Events: Heat

29. IPCC, 2007 Extreme Events: Heat 29