scientific hogwash, just like the "the world is running out of oil!"
Weather like oil is an act of nature. Don't think we are soo big that we can damage either. There are scientific studies that show oil is renewable, as there are studies that show weather is cyclical.
While we aren't running out of oil, it is not a renewable resource. When we do hit the peak, (in who knows how long, not in our lifetime probably) things will change.