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The Great Debate over the World Predicament
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aerosol aerosol spray agricultural albedo American areas argued atmosphere Bryson carbon dioxide cause climate modification climatic changes climatic effects climatic system climatologist Colorado Colorado River cooling crop yields danger debate demographic transition despite disasters drought Earl Butz earth earth's surface economic Ehrlich energy consumption environment environmental estimates example famine farmers fertilizer Figure food production food reserves future Genesis Strategy grain Green Revolution heat human activities Ibid Ice Age impact important increase India industrial Institute land levels lifeboat ethics Little Ice Age long-term million nations natural nitrogen nuclear occur oceans optimists ozone particles percent perhaps political pollution population growth possible predicted present problems projects radiation rainfall reduce regions Reid Bryson Sahel Sahelian Science scientific scientists solar energy stratosphere suggests temperature tion trend tropics ultraviolet warm weather modification wheat world food World Food Conference world predicament York