Changes

The observed widespread warming of the atmosphere and ocean, together with ice-mass loss, support the conclusion that it is extremely unlikely that global climate change of the past 50 years can be explained without external forcing, and very likely that is not due to known natural causes alone."<ref>Borenstein, Seth (2007), "Warming 'Likely' Man-Made, Unstoppable." Associated Press, as published by Forbes[http://www.forbes.com/feeds/ap/2007/02/02/ap3388409.html]</ref>

The observed widespread warming of the atmosphere and ocean, together with ice-mass loss, support the conclusion that it is extremely unlikely that global climate change of the past 50 years can be explained without external forcing, and very likely that is not due to known natural causes alone."<ref>Borenstein, Seth (2007), "Warming 'Likely' Man-Made, Unstoppable." Associated Press, as published by Forbes[http://www.forbes.com/feeds/ap/2007/02/02/ap3388409.html]</ref>

Al Gore's film [http://imdb.com/title/tt0497116/usercomments?start=60 An Inconvenient Truth(already available on DVD

Al Gore's film [http://imdb.com/title/tt0497116/usercomments?start=60 An Inconvenient Truth] (already available on DVD

  that was reviewed by experts and in [http://www.amazon.com/Inconvenient-Truth-Planetary-Emergency-Warming/dp/1594865671 book format]) has recently been challenged by an entertaining and informative documentary on Channel 4 in the UK entitled "The Great Global Warming Swindle". Details of this can be found at: http://www.channel4.com/science/microsites/G/great_global_warming_swindle/index.html

  that was reviewed by experts and in [http://www.amazon.com/Inconvenient-Truth-Planetary-Emergency-Warming/dp/1594865671 book format]) has recently been challenged by an entertaining and informative documentary on Channel 4 in the UK entitled "The Great Global Warming Swindle". Details of this can be found at: http://www.channel4.com/science/microsites/G/great_global_warming_swindle/index.html