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 that was reviewed by experts {{fact}} 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 [http://www.video.google.ca/videoplay?docid=4499562022478442170&q=Global+Warming+Swindle The Great Global Warming Swindle].<ref>  http://www.channel4.com/science/microsites/G/great_global_warming_swindle/index.html</ref>. Despite the popularity of the Channel 4 documentary, experts claim it has flaws and scientists appearing in it complained that they have been misled<ref>http://ocean.mit.edu/~cwunsch/papersonline/responseto_channel4.htm</ref>, and are is considering legal action against the documentary makers for misrepresenting him.

Al Gore's film [http://www.climatecrisis.net/] (already available on DVD that was reviewed by experts {{fact}} 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 [http://www.video.google.ca/videoplay?docid=4499562022478442170&q=Global+Warming+Swindle The Great Global Warming Swindle].<ref>  http://www.channel4.com/science/microsites/G/great_global_warming_swindle/index.html</ref>. Despite the popularity of the Channel 4 documentary, experts claim it has flaws and scientists appearing in it complained that they have been misled<ref>http://ocean.mit.edu/~cwunsch/papersonline/responseto_channel4.htm</ref>, and are is considering legal action against the documentary makers for misrepresenting him.

Criticisms of Mr. Gore have come not only from conservative groups and prominent skeptics of catastrophic warming, but also from rank-and-file scientists like Dr. Easterbook, who told his peers that he had no political ax to grind. A few see natural variation as more central to global warming than heat-trapping gases. Many appear to occupy a middle ground in the climate debate, seeing human activity as a serious threat but challenging what they call the extremism of both skeptics and zealots.[http://www.nytimes.com/2007/03/13/science/13gore.html?_r=1&oref=slogin]

Criticisms of Mr. Gore have come not only from conservative groups and prominent skeptics of catastrophic warming, but also from rank-and-file scientists like Dr. Easterbook, who told his peers that he had no political ax to grind. A few see natural variation as more central to global warming than heat-trapping gases. Many appear to occupy a middle ground in the climate debate, seeing human activity as a serious threat but challenging what they call the extremism of both skeptics and zealots.[http://www.nytimes.com/2007/03/13/science/13gore.html?_r=1&oref=slogin]