Buying a light bulb used to be relatively straightforward: Check your old bulb's wattage, head to the store and pick up a new one. But the transition to energy-efficient lighting has changed that.

Posts from this topic will be added to your daily email digest and your homepage feed. Smart lighting is the most important innovation in lighting since the invention of the lightbulb. It adds so much ...

Become a light-bulb expert: 'How many people does it take to change a light bulb?' The answer? Just one — you, with the right safety tips. Here are five things to remember the next time you perform ...