Though there are countless 60-watt LED prototypes in evidence at Lightfair, few are available for side-by-side comparisons with incandescents.

Reader's Digest Version: Turn off incandescents if you're leaving the room for more than five seconds; CFLs, if you'll be gone at least 15 minutes.

The incandescent lamp we use in daily life was invented by Edison.

The GE CFL produced as much light as an incandescent, while drawing just 20 percent as much electricity.

Although they use just a quarter of the energy of incandescents, consumers have been slow to adapt them.