California Institute of Technology energy chemist, Nate Lewis offers the following analogy: "Imagine you are driving in your car and every mile you throw a pound of trash out your window. And everyone else on the freeway in their cars and trucks is doing the exact same thing, and people driving Hummers are throwing two bags out at a time-one out of the driver side window and one out of the passenger side window. How would you feel? Not so good. Well, thats exactly what we are doing, you just can't see it. Only what we are throwing out is a pound of CO2-thats what goes into the atmosphere, on average, every mile we drive."
Tom Friedman
-Flat, Hot, and Crowded
