xBookUtils.terms['fn_19_501'] = "From Aristotle, Politics, Book II, Chap. III, 1261b. Jowett,Benjamin (trans.). 1885. The Politics of Aristotle. With Introduction, Marginal Analysis, Essays, Notes, and Indices. 2 vols. Oxford: Clarendon Press. See Vol. 2.";
xBookUtils.terms['fn_19_502'] = "The system was later modified so the ITQs gave rights to acertain share of the total allowable catch.";
xBookUtils.terms['fn_19_503'] = "See World Meteorological Organization. 2007. Scientific Assessment of Ozone Depletion: 2006. Global Ozone Researchand Monitoring Project Rept. No. 50. Geneva, Switzerland. http://www.esrl.noaa.gov/csd/assessments/2006/report.html.";
xBookUtils.terms['fn_19_504'] = "http://greatchange.org/footnotes-overshoot-easter_island.html.";
xBookUtils.terms['fn_19_505'] = "Demsetz, Harold. 1967. Towards a theory of propertyrights. AER 57: 2.";
xBookUtils.terms['fn_19_506'] = "Everyone dies from something. In the United States, the probability of death by car crash is about 1 in 100 and the probability of death by commercial airplane crash is about 1 in 20,000. Chapman and Morrison (1994) estimate that the probability of death by asteroid collision is also about 1 in 20,000. See Chapman, Clark and David Morrison. 1994. Impacts on the earth by asteroids and comets: Assessing the hazard. Nature 367: 33–40.";
xBookUtils.terms['fn_19_507'] = "The probability that your $100 makes the difference between a successful asteroid deflection and an unsuccessful asteroid deflection is so small that we can ignore it.";
xBookUtils.terms['fn_19_508'] = "Thus, the tragedy of the commons can also be understood as a prisoner’s dilemma, which we introduced in Chapter 15.";