If you are interested to know what are the changes to the Artic Sea Ice level since 1979 to 2007, Global CO2 (carbon dioxide) Emissions from 1980 to 2004, Average Global Temperature since 1885 to 2007 or what will happen to your country/city if the Sea Level rises from 0m to 6m, head over to the interactive Climate Time Machine by JPL (Jet Propulsion Lab) to learn about it.

You will realize that global warming is indeed happening and not a hoax!

Climate Time Machine