Yesterday, a federal ban on production of 40- and 60-watt incandescent bulbs went into effect, forcing consumers to switch to more efficient (if less aesthetically pleasing) bulbs, like LEDs and CFLs.

This is an LED bulb that fits into a recessed light fixture. It can become an annoying strobe light in your home. (Tim Carter) Analysis by Tim Carter Q: I feel like I’m going to have a seizure. I’ve ...