Green is allegedly the new black. If that’s true, why does it seem so many people are confounded by their own energy use? (Who among us can say with any certainty how many kWh our flat screen TVs use? And what is a kWh anyway?). Do we not care? Is saving energy too inconvenient? Is ignorance bliss? Or maybe we just don’t know what to do—beyond turning off the lights or using a power strip.