2007-09-13 and 20 - Promising Signs and Bad Signs

2007-09-13 and 20 - Promising Signs and Bad Signs -...

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Promising Sings: 1. Greatly Improved air and water quality since signing of: - clean air act - clean water act - establishment of Environmental Protection Agency ***average 1970 car emissions approx. 200 cars today*** 2. Recovery of some endangered species - 1973 Endangered Species Act Bald Eagles (DDT Outlawing – thinned eggshells) Peregrine Falcons Timber wolves (Hunting) 3. International Treaties/Agreements Policies C.I.T.I.I.E.S. International Endangered Species Act Outlaw transport/trade of endangered species Kyoto Accord 1997 Global Warming Treaty Decrease CO 2 emissions by 57% by 2012 4. Food Productions 1950 - Population 2.5 Billion Average daily calories per person: 2100 calories 2007 - Population 6.5 Billion Average daily calories per person: 2800 calories Technical Advancements Pesticides N 2 NH 4 (lots of energy) Water – More Irrigation Fertilizers – chemical Crop Breeding - Green Revolution
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Bad Signs: 1. Addiction to Non-Renewable Pollution Fossil Fuels Fossil Fuel # of years remaining at current rate
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2007-09-13 and 20 - Promising Signs and Bad Signs -...

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