It's no secret that the earth goes through cooling periods as well as warming periods.
What is false is that man-kind has any effect on the warming and/or cooling periods.
Besides Al Gore, let's look at the key players in the "Climate Change" hoax:
Jeffrey Skoll(Ashkenazi Jew) – Executive Producer, An Inconvenient Truth
Joseph J. Romm(Ashkenazi Jew) – Senior Fellow, Center for American Progress
Stephen H. Schneider(Ashkenazi Jew) – Professor of Environmental Biology and Global Change, Stanford University
Michael E. Mann(Ashkenazi Jew) – Professor of Meteorology, Pennsylvania State University
Gavin A. Schmidt(Ashkenazi Jew) – Climatologist, NASA Goddard Institute for Space Studies
Benjamin D. Santer(Ashkenazi Jew) – Climate Researcher, Lawrence Livermore National Laboratory
Todd D. Stern(Ashkenazi Jew) – Special Envoy for Climate Change, U.S. State Department
Richard L. Sandor(Ashkenazi Jew) – Chairman and Founder, Chicago Climate Exchange (CCX)
Nicholas H. Stern(Ashkenazi Jew) – Professor of Economics and Government, London School of Economics (LSE)
Ignacy Sachs(Ashkenazi Jew) – Socioeconomist, École des Hautes Études en Sciences Sociales
So, Jews make up less than 2% of the US population yet the leading men behind the "Climate Change" hoax are all Ashkenazi Jews. Not to mention that George Soros is a Jew.
What are the odds that all the leading men would be 100% Jewish when the Jews make up less than 2% of the population?