I saw it last night and Al Gore blew the cycle theory "way" out of the water. I was a little dubious about global warming, knowing there were cycles of heating and cooling, until I saw the copious evidence in this movie that global warming is happening and it is escalating at a rapid rate over the last 30 years, especially. Great movie. I suggest that everyone see it and draw your own conclusions. Loved the allusions to Hitler and smoking and Lung Cancer. We can't be apathetic.
http://www.climatecrisis.net