Global Warming

Global warming refers to the increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation (http://en.wikipedia.org/wiki/Global_Warming). An increase in global temperatures is expected to cause other changes, including sea level rise, increased intensity of extreme weather events, and changes in the amount and pattern of precipitation (http://en.wikipedia.org/wiki/Global_Warming). Other effects of global warming include changes in agricultural yields, glacier retreat, species extinctions and increases in the ranges of disease vectors (http://en.wikipedia.org/wiki/Global_Warming).