One of my favorite books, and favorite blogs is Freakonomics. Recently on the blog, Steven D. Levitt posted a very funny post in response to the notion that obese people are contributing to global warming.
He argues that in fact the opposite is true. People who exercise are causing global warming because of all the calories that are being burned.
If you have never read Freakonomics, I highly recommend it. It is a very interesting look at many different, and sometimes unrelated things that shape the world around us. It’s a fast, easy read, and will leave you looking at the world a little differently.
And when you are done with Freakonomics, go read Moneyball.