1. http://hubblesite.org
2. http://darwiniana.org/trees.htm
3. http://www.religioustolerance.org/rel_comp.htm
4. http://en.wikipedia.org/wiki/Geologic_timescale
5. http://en.wikipedia.org/wiki/Punctuated_equilibrium
6. http://www.ucmp.berkeley.edu/education/events/cowen1b.html
7. http://www.atmo.arizona.edu/students/courselinks/fall04/atmo336/lectures/sec5/holocene.html
8. http://en.wikipedia.org/wiki/Paleocene-Eocene_Thermal_Maximum#cite_note-Zachos2008-5
9. http://upload.wikimedia.org/wikipedia/en/6/63/Co2-temperature-plot.svg
10. http://nationalhumanitiescenter.org/tserve/nattrans/ntecoindian/essays/pleistocene.htm
11. New Zealand Extinctions
12. Census of Marine Zooplankton
13. Archaea
14. Food Chain
15. Sea level
16. http://www.cmar.csiro.au/sealevel/
17. Water cycle
18. Global Warming Art
19. Oxygen isotope ratio
20. Celestial Driver of Phanerozoic Climate?
21. Invasive species
22. Solar system orbit through the Milky Way
23. Variations in the Earth's Orbit: Pacemaker of the Ice Ages
24. Deglaciation
25. What Killed the Woolly Mammoth?
26. Toba Volcanic Erruption
27.

Other reading

Crutzen, P. J., and E. F. Stoermer. 2000. The "Anthropocene". Global Change Newsletter. 41: 17-18.
Erwin, Terry L., 1988, The Tropical Forest Canopy: The Heart of Biotic Diversity, in, E.O.Wilson, ed., Biodiversity, National Academy Press, Washington, D.C., pp.123-129.
Erwin, Terry L., 1997, Biodiversity at its utmost: Tropical Forest Beetles, in, Reaka-Kudla, M.L., D.E. Wilson, and E.O.Wilson (eds.), Biodiversity II, Joseph Henry Press, Washington, D.C., pp.27-40.
Futuyma, Douglas J., Evolutionary Biology. 1998, Sinauer Associates, Inc.
Reid, W.V., and K.R.Miller, 1989, Keeping Options Alive: The Scientific Basis for Conserving Biodiversity. World Resources Institute, Washington, D.C.
Smith, F.D.M., R.M. May, R. Pellew, T.H. Johnson and K.R. Walter, 1993, How much do we know about the current extinction rate? Trends in Ecology and Evolution, 8:375-378.
Stork, N.E., 1997, Measuring Global Biodiversity and Its Decline, in, Reaka-Kudla, M.L., D.E. Wilson, and E.O.Wilson (eds.), Biodiversity II, Joseph Henry Press, Washington, D.C., pp.41-68.
Zachos, J.C.; Dickens, G.R.; Zeebe, R.E. (2008). "An early Cenozoic perspective on greenhouse warming and carbon-cycle dynamics". Nature 451 (7176): 279–83. doi:10.1038/nature06588.
Zielinski, G. A., P. A. Mayewski, L. D. Meeker, S. Whitlow, M. S. Twickler, and K. Taylor (1996), Potential Atmospheric Impact of the Toba Mega-Eruption ~71,000 Years Ago, Geophys. Res. Lett., 23(8), 837–840.
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