This is from the Whitesides talk (see previous post), and was originally made by the DoE. You'll have to click on it to read the words, but it's an amazing plot. It shows where all of our energy comes from on the left, and where all of our energy goes on the right. Without reading any words, just look at the gray colors on the right, that's all the wasted energy. More than half of our energy is wasted! Each of these processes, when you look closely at it, involves at least some chemistry.
Oh, and whoever picked the color for petroleum must have a twisted sense of humor -- they made it GREEN. I do understand that black was already taken for coal. Maybe they mean petroleum once was green stuff?