When my wife, Clare, was a little girl, she was shocked while changing a light bulb. For the nearly 43 years of our marriage, I have changed most of the light bulbs in our home. How many people does ...

As of Jan. 1 of this year, the 60-watt incandescent light bulb—that classic of the genre; the Edisonian ideal; the signifier that illuminates in your mind’s eye when you’re asked to picture “a light ...