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"Wait, did I read this correctly? Gore is wrong?"

For sure. Major & minor climate changes are due too three things. The variation in the sun output(minor to this stage), orbital mechanics(major and minor) and natural earth actions, such as volcanoes, plate tectonics, changes in currents, forest fires etc.(major).

Mankind's impact is very minor. Our impact works both ways, reduction in Forest fires(positive - at least until the envior wackos got involved with the spotted owl etc.) Shift from coal burning to oil(Positive). reduction in methane producing animals(killed off the Buffalo's positive) Of course more people, bringing more fossil fuels more concrete(very minor)

Global warming will make much more land arable, and is a good thing, planet will be wetter(major green house gas). It is global cooling or major ice age that is the scary one that could severely impact mankind.

So, buy the SUV, and barbecue like hell