global warming does not exist. It's junk science based on ONE "study" where they THEORIZED that the earth's temperature increased 6/10ths of one degree in the last 100 years (because accurate measurements and reliable actual data were not available... the accuracy of thermometers 100 years ago was not the greatest)
THe earth is 4.5 BILLION years old, and 100 years is such a ridiculously microscopic Sample Size over the life of the planet, that it's really a total joke.
The earth undergoes gradual cooling and warming cycles that last thousands or even millions of years.
Search for stuff about "global warming hoax" and you'll find LOTS of information for a really informed paper.