1. Chapter 6 frontispiece. Bubbles in ice recovered by drilling from deep within the Greenland Ice Sheet E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Photograph by D. Dahl-Jensen, University of Copenhagen 059

2. Figure 6.1. The record of the Paleocene-Eocene Thermal Maximum in a deep-sea sediment core E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Source: Zachos et al., 2005 060

3. Figure 6.2. Louis Agassiz E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Source: South Caroliniana Library, University of South Carolina 061

4. Figure 6.3. Variations in the oxygen isotopic ratio with depth of benthic foraminifera in two sediment cores from the equatorial eastern Pacific Ocean E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Source: Mix et al., 1994 062

5. Figure 6.4. The Milankovitch cycles E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Source: R. Rohde, Global Warming Art (b) (a) 063

6. Figure 6.5. The 800,000-year record of atmospheric CO 2 E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Source: Lüthi et al., 2008 064

7. Figure 6.6. The location of Greenland Ice Sheet drill sites E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Source: Geological Survey of Greenland 065

8. Figure 6.7. A Greenland ice core E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Source: NOAA 066

9. Figure 6.8. The record of temperature in the Greenland ice cores E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Data from Mayewski et al., 1997 067

10. Figure 6.9. The record of major volcanic eruptions in the Greenland ice cores E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Data from Zielinski et al., 1994 068

11. Figure 6.10. The record of the Younger Dryas in the Greenland ice cores E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Data from Mayewski and Bender, 1995 069

12. Figure 6.11. The correlation of Antarctic EDML and Greenland NGRIP ice cores E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Source: EPICA Community Members, 2006 070

13. Figure 6.12. Cross section of a tree trunk being prepared for exhibition E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Photograph by R. Mickens, American Museum of Natural History 071

14. Figure 6.13. Varves exposed on the campus of the University of Massachusetts, Amherst E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Photograph by J. Beckett, American Museum of Natural History 072

15. Figure 6.14. Coral E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Photograph by D. Finnin, American Museum of Natural History 073

16. Figure 6.15. A 1,200-year reconstruction of Northern Hemisphere temperatures relative to the 1961-1990 mean E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Source: D’Arrigo, Wilson and Jacoby, 2006 074