Al Gore has been pounding away at this issue since the 80s. This isn't a new thing for him. Claiming that he is untrustworthy because he is a politician is nonsense. He has been an environmental advocate longer than he has been a politician.
Also, you can certainly trust the judgement of organizations like the National Academy of Sciences, The American Meteorological Society, the American Geophysical Union and its parent organization, the American Institute of Physics, the national science academies of the G8 nations, Brazil, China, and India. and the American Association for the Advancement of Science, all of which endorse the notion that human activity is probably responsible for most of the observed warming over the last 50 years. Why would they want to take a controversial position on something as important as this?
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Al Gore has been pounding away at this issue since the 80s. This isn't a new thing for him. Claiming that he is untrustworthy because he is a politician is nonsense. He has been an environmental advocate longer than he has been a politician. Also, you can certainly trust the judgement of organizations like the National Academy of Sciences, The American Meteorological Society, the American Geophysical Union and its parent organization, the American Institute of Physics, the national science academies of the G8 nations, Brazil, China, and India. and the American Association for the Advancement of Science, all of which endorse the notion that human activity is probably responsible for most of the observed warming over the last 50 years. Why would they want to take a controversial position on something as important as this?