Free pamphlet/ white paper download; "5th Assesssment Report" from the Intergovernmental Panel on Climate Change (IPCC) regarding the state of the world with respect to Climate Change and global warming. This link will take you to the pdf download, .... or go the their website for more free reports.
|Wikipedia Climate Change Page|
From Wikipedia: "Climate change is a long-term change in the statistical distribution of weather patterns over periods of time that range from decades to millions of years. It may be a change in the average weather conditions or a change in the distribution of weather events with respect to an average, for example, greater or fewer extreme weather events. Climate change may be limited to a specific region, or may occur across the whole Earth." ... (Click link to go to the Wikipedia page)