Unformatted text preview: The Global Environment
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http://www.unc.edu/depts/polisci/grad_awards.html http://www.unc.edu/teachawards/ Degradation of Arable Land Severity of the Problem Arable Land In Developing Countries Fell by 1.9% per capita 19801990 3% of Earth's Total Arable Land Lost Between 1985 and 2000 Percent of Population with Access to Safe Drinking Water Source: United Nations Severity of the Problem 500 million people suffer from water stress or severe water scarcity. 2 billion people have access to less than 50 liters/day. Projected to be 4 billion by 2050. Water Stress: less than 1,700 m3/person/year Water Scarcity: less than 1,000 m3 By 2025, up to 2/3 of world population under water stress or scarcity Water Availability in the Middle East
(per capita cubic meters per year) 1990 Algeria Egypt Oman Israel Kuwait Saudi Arabia Lebanon 2025 380 620 470 310 010 50 860 750 1070 1330 470 10 160 1600 Source: World Resources Institute and the United Nations Depletion of Fish Stock Severity of the Problem According to the UNFAO: Recent Research (New Scientist, 03): 9 of the World's 17 largest fisheries are over harvested Major fish like Cod down to 50% ALL of the 17 largest fisheries are over harvested Major fish like Cod down to 5% Latest Research Implications of Environmental Degradation Decreased Agricultural Production More General Economic Decline Population Displacement Disrupted Social Institutions and Social Relations Are These Outcomes Necessary? The NeoMalthusians Versus The Cornucopians NeoMalthusians: (After Thomas Malthus of the late 18th Century) Population Growth outpaces the environment's capacity to support the population The Cornucopians: Technology, by allowing us to extract more from a given set of resources, will allow us to escape the NeoMalthusian pessimism. Six Reasons the N-Ms Might be Right Multiple Interactive Scarcities Rapid Development of Scarcities Consumptionoriented Societies Technology is in North, problems arise in South Are we smart enough? Need government solutions The Debate "Misleading Math About the Earth," in The Scientific American, January 2002 Richard B. Norgaard. 2002. "Optimists, Pessimists, and Science," BioScience March 2002, pages 287292. Global Warming: Neglecting the Complexities Energy: Asking the Wrong Questions Population: Ignoring its Impact Biodiversity: Dismissing Scientific Process ...
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- Spring '08
- Saudi Arabia, World population, United Arab Emirates, Overfishing, arable land