Originally Posted by kane

It is obvious that the climate has changed. Anyone with any reasonable amount of intelligence can see that. All you need to do is see how the polar ice caps have melted.

The question is whether or not we as human beings and what we are doing is having any affect on the climate.

Personally, I don't know if we are or not. There isn't enough data to know for sure and likely won't be for another 100+ years. However, it seems reasonable to assume we are and I think we have nothing to lose in lowering pollution and trying to take better care of the Earth.