Originally Posted by iamwhatiseem

The earth is warming, that is an indisputable fact....what is causing it is the question of course.
Going along with the good dr. - I certainly buy that human activity could be exacerbating an already existing climate change. Now, what iscritical is this activity only slightly speeding the warming age up without increasing severity, or is it affecting the severity and we could see some level of possible calamity.

I would rather operate on the safe side myself. Humanity has a nasty habit of ignoring problems until they become catastrophes. Plus the benefit of seeking alternative fuels etc. has it's own benefits that make it more than worthwhile irregardless if global warming is human affected or not.