Publish or perish it is called.We've only been watching the last 150 years... no way to tell. In the 70's it was "OH NO!!! New Ice Age coming!!" It's all about making more money and scaring them to fork over more money. I agree we must take better care of the planet and we could be FAR more advanced in that area if money were NOT involved. When I was in college there was a contest to see who could get the most gallons per mile vehicle. The physics department got it up to 80 mpg and GM paid the school and bought the technology and promptly "filed" it. If these governments were serious things would be much better than they are today. It's ALL about money. Any issue when you analyse it you'll find it's about money.