Global Warming, Climate Change and Greenhouse Effect

Map of Global Vulnerability to Climate Change

Map of Average Land Temperatures From 2001 to 2011

Map of Average Ocean Temperatures from 1985 to 1987

Chart of Sources of Greenhouse Gas Emissions

Reduction Trends In Artic Sea Ice For Time Period From 1980 to 2007

Species Reduction as a Result of Climate Change

Vulnerability of National Economies to Potential Climate Change Related Reduction in Fisheries

Number of World Natural Disasters by Year

There is an overwhelming consensus among the scientific community that an increase of CO2 emissions by humans since the beginning of the industrial revolution as lead to a world-wide rise in average temperatures.  Known as global warming, it is projected that if present rates of CO2 missions continue, there will occur a 3 degree C (5.4 degree F) world-wide average temperature increase by the end of the next century.  This amounts to a warming rate of 10 to 100 times more rapid than the fastest warming period in the last 10,000 years.  It is predicted that such rapid global warming could have significant negative consequences, including a melting of the world’s glaciers and resultant sea level rise that would displace much of the world’s population in low-lying areas and countries.  Already we are seeing the results of global warming in terms of the spreading of warm weather disease vectors into what were previously colder climates, the detruction of ecosystems with the resultant loss or extinction of plant and animal species, and more violent storms and variations in weather.  With as much as 50 percent of the world’s population settled in coastal areas, it is estimated that by the year 2050 as many as 150 million people could be displaced and become refugees, creating not only a human tragedy but also a source of global insecurity and disease epidemics.  An example of the evidence of global warming is the fact that in the last 10,000 years, ten of the warmest years have occurred since 1983, with seven of them since 1990.  Meanwhile, rises in sea levels with threaten not only such poor countries as Bangledesh, but also some areas such as Florida and the Mississippi Delta and some of the largest cities of the world such as New York City and London.

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~ by americanpresidents on February 23, 2010.

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