More things to think about
Did you know global temperatures stopped rising during the middle of the 20th 
Century, and if so why?

What are some of the tools & data that climate scientists use to understand ancient climate change?

Are the changes in atmospheric temperature observed over the past two decades uinusual?

What masked human effects prior to 1975?

Why are scientists confident that global warming has not stopped over the past decade?

Why do you think the topic of climate change has become so controversial?

Has climate had a major impact on human evolution?