Dumb thread is dumb.
So scientists today have a different opinion (about anything) than those of 40 years ago?
In the past 40 years I'm pretty sure that the scientific consensus about many subjects has changed/evolved as our understanding of the of our world has grown.
Scientists don't have all the answers but they certainly have more accurate ones today than they did 40 years ago.
Anyway, I have a question for the right-wing climate change deniers on this thread:
How's the weather in the Southern Hemisphere lately? (You know, the half of the Earth that's south of the equator.)