Senin, 14 Mei 2012

With Speed and Violence: Why Scientists Fear Tipping Points in ClimateChange

Ebook Download | With Speed and Violence: Why Scientists Fear Tipping Points in Climate Change | Type I climate change is gradual and follows the graphs of most climate modelers; Type II is much more abrupt and results from crossing hidden "tipping points." Pearce explains what some of these tipping points in a credible and balanced manner.
Charles Keeling began collecting CO2 data at the top of Mauna Loa (14,000 feet) in 1958 (315 ppm), 320 in 1965, 331 in 1975, and 380 now - the level is increasing at an accelerating rate. Nineteen of the twenty warmest years have occurred since 1980, and the five warmest years all since 1998. Thus, credible evidence indicates that global problem is real, and getting worse. Currently the U.S. and Australia emit about 5.5 tons of carbon/year/citizen, Europeans average about 3, China about 1, and India less than 0.5. Our top priority should be energy efficiency, followed by increased use of nuclear, solar, and wind energy. Estimated total cost to stop global warming - about $8 trillion.






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