As if global warming needed the bad press. The results of global warming are real and will be experienced, but on a long-term basis. For instance, the North American "agriculture belt" will move northward, affecting business and making Canada more of a breadbasket. However, business moves fast, nature does not. As the warmer climate moves north, many forests, like the Boreal Forests, will have to shift north, but a forest moves only 2 miles every 10-50 years, meaning some forests will simply be lost. A movie depicting immediate disaster and chicken little doom and gloom and the like only hurts the cause.
BTW, I agree that you do gotta love Iron Maiden. Personally, I'm a Keeper of one of the Seven Keys.