Which light bulb will last the longest and which is cheapest to run?
When the lights go out, you're in the market for a bulb replacement. But if choosing between CFLs, halogen or LEDs leaves you in the dark, our guides will separate the fact from the hype for each type. And for the eco-inclined out there we dish the dirt on power usage and gnarly chemicals like mercury – plus what to do with those annoying breakages.
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