According to wikipedia, this is what Global Warming is:

 Global warming refers to the rising average of Earth’s atmosphere and oceans and its projected continuation.  In the last 100 years, Earth’s average surface temperature increased by about 0.8 °C (1.4 °F) with about two thirds of the increase occurring over just the last three decades.  Warming of the climate system is unequivocal, and scientists are more than 90% certain most of it is caused by increasing concentrations of greenhouse gases produced by human activities such as deforestation and burning fossil fuels.  These findings are recognized by the national science academies of all the major industrialized countries.

Some people say it’s just stories, I say it’s true.  It’s been scientifically proven, what do you want more?  This is a major issue, and all we do is ignore it.  Global Warming is just as big problem as pollution.  What can we do?  We should encourage recycle and not use gases.  As for the burning of fossil fuel, engineers are working a electricity powered car. 

For more information on Global Warming, visit wikipedia.