Renewable resources like solar power or wind are ones

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Unformatted text preview: round the world. Renewable resources (like solar power or wind) are ones that will continue to be available because they naturally replenish as fast or faster than they are being consumed. Nonrenewable resources (like oil or coal) are those are not replenished as fast as they are being used. Therefore, there must be a balance between resource varieties and consumption—the future must be sustainable Implications of Sustainability Energy: increasing energy demands dictate exploration in remote, pristine areas. Implications of Sustainability Energy Implications increasing energy demands dictate alternatives to burning limited reserves of fossil fuels. Alternatives include solar, wind, geothermal and nuclear energy. Can we supply sufficient resources and maintain a quality environment in the future? 1)  1/3 of world’s cropland abandoned during past 40 years due to erosion. 2)  Pressure for new cropland results in 60-80% of deforestation - soil loss and global warming. 3)  90% of diseases in developing countries comes from lack of clean water. Considerations for Aiding Global Sustainability Carrying Capacity – the number of people that Earth can support sustainably at a defined level of economic and social well being. How many people can Earth support without irreversible depletion of its resources? Easter Island - an example of Carrying Capacity Overload Easter Island Once lush, but deforestation made resources unavailable, and the society unsustainable. Figure 1-16 How People and Earth Interact: Hazardous Earth Processes There have always been earth processes that are hazardous to people. These natural hazards must be recognized and avoided where possible and their threat to human life and property minimized. Increasing Costs of Natural Disasters Amount of money spent on disaster relief has more than tripled as a function of GDP during the last 50 years. Hurricane Katrina was a terrible natural disaster in U.S. history, with over 1800 deaths and an estimated $200 billion in prop...
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This note was uploaded on 04/02/2013 for the course 460 202 taught by Professor Sugarplum during the Fall '13 term at Rutgers.

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