Penn State Tailgate - Survey on Global Warming

[maryfay53]

The question isn't whether or not global warming is occurring, but whether man is causing it and can reverse it. There have been periods of warming and cooling throughout the existence of our planet - long before man existed. Something causes this. It may or may not be something man contributes to, and to date, there is a lack of scientific "consensus" about man's role. Where is your evidence that global warming is being caused by man? No one is debating that we are in period of warming.