1. Global Warming
Interestingly, this occurred in three phases: a relatively rapid rise of 0.4 degrees between about 1910 and 1940, a surprising plateau between 1940 and 1975, and another rise of about 0.2 degrees Celsius between 1975 and the 1990's. ... They have also forecasted a rise of about forty centimeters in the sea level by the year 2100. Not only do temperature readings show that the temperature is rising but also environmental signals have occurred. ... These greenhouse gases allow the sun's radiation to pass through, but trap much of the heat emitted by the Earth. ... The continual fl...
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