A couple of years ago, I moved into a new house and found in virtually every light socket a compact fluorescent lamp. These are the spiral light bulbs that are supposed to be much more energy efficient than the incandescent light bulb, which had been the standard since Thomas Edison perfected it in 1879. Indeed, CFLs last up to 15 times longer and use only one-third the energy of traditional light bulbs. Finding that my new home was festooned with them pleased me greatly, as I am equal parts environmentalist and cheapskate. I had read that should a CFL ever shatter the hazmat team should be dispatched because of the bulb’s high mercury content, but I wasn’t very concerned about that, as clumsiness is not amongst my traits.