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13 Editorial. 2012. Back to Earth. Nature 486:5.

14 Grimm, F. 2012. Banned words in some states: rising sea levels. Miami Herald 11June http://www.miamiherald.com/2012/06/11/2844468/banned-words-in-some-states-rising.html.

15 McClure, R. 2012. Pledges forgotten, local governments repurpose federally funded parks. Investigate West 11June http://www.invw.org/article/pledges-forgotten-local-g-1277.

16 Hooper, D. U., E. C. Adair, B. J. Cardinale and 7 others. 2012. A global synthesis reveals biodiversity loss as a major driver of ecosystem change. Nature 2May

17 Hertwich, E. 2012. Biodiversity: remote responsibility. Nature 486:36-37.

18 Clymes, T. 2012. The battle. Popular Science 289(2):36-43.

19 R. J. Samuelson as quoted in M. Velasquez, C. Andres, T. Shanks, S. J. and M. J. Meyer. 1992. The common good. Issues in Ethics 5(1):spring.

20 Velasquez, M., C. Andres, T. Shanks, S. J. and M. J. Meyer. 1992. The common good. Issues in Ethics 5(1):spring.