Lawrence Livermore National Lab puts together a graphic about energy use in the United States each year. Frankly, it is one of the great pieces of graphic design, better than the usual infographics that you see from time to time. They describe energy inputs from the difference sources and then where the energy goes.
If you teach environmental science the material is essential. If you teach physics, it is nice to see a chart that tracks losses.
And, yes, I know that Treehugger has an agenda. I'm not trying to start a fight. Don't click here if you don't want to. You are adults; you can figure out what parts are opinion and what parts are reasonable interpretation and translation.