I've become convince that scientists really don't have enough data to accurately assess man's influence on the global climate. Our planet has experienced several major climate shifts over its lifetime which are caused by an almost infinite number of variables that all intertwine and affect each other. There is simply no way for us to be able to discern what affect man is having on the global climate because we are just one of those variables.
I am note refuting the fact that the global climate is changing but for scientists to continue claiming that man is the major contributing factor to this change is not something I'm willing to buy into. Environmentalists should focus more on the negative affects pollution has on people in the short term and at the local level. Talking about global warming makes you look as ridiculous as The Day After Tomorrow. Talking about how the local coal plant or car emissions are causing an increase in major health problems gets people's attention and makes them more likely to side with you.
Wasn't the cool down that killed the dinosaurs pretty quick?
Umm do believe that was caused by a meteor which cut out sunlight for a significant amount of time. Ice fields probably grew at the poles and earth has its own feedback loops which make it colder than you would think it would be. Such as more Ice means more sunlight reflected back and so forth. And the thing is that there are ways the earth can warm up on its own, say if lots of volcanoes and forest fires belch carbon into the environment. That has happened in the past and no doubt those processes occur in the present but they cannot account for the rapid temperature increase we saw these last 20 years. It will be interesting to see if the earth actually cools down in the next few years. I doubt it.
