[Dominic Harr]

• The Earth has been warming since the last Ice Age.

• The temp has increased faster in the past.

• There were no factories, autos, etc, then.

• Therefore, it is highly unlikely that factories, autos, etc are to blame.

By specifically leaving out this 'contextual info' that would prove them wrong, the 'Co2 is killing us' folks have really pulled a good one.

[cogitator]

The temp has increased faster in the past.

Only at glacial/interglacial transitions or at the end of the Younger Dryas, or at the 8200 year BP event.

Therefore, it is highly unlikely that factories, autos, etc are to blame.

Very faulty logic. The CO2 increase since the 1850s is atributable to human activities. At no other time during the past 640,000 years has C02 in the atmosphere been above 280 ppm. This increase, which affects the radiative balance of the Earth and will have a warming effect, is occurring during a warm interglacial period at a time when there are no other major significant influences on climate.