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Which Light Bulbs are the Greenest?

For decades, those concerned with energy savings have been touting the benefits of compact fluorescent lamps (CFLs) over incandescents. CFLs use only one-fifth of the electricity of incandescents to generate the same amount of light, and they can last six to 10 times longer. But CFLs’ cooler color and inability to be dimmed have made them less desirable. Another hindrance to the widespread adoption of CFLs has been their higher cost (though most consumers would save plenty in energy costs over the life of a bulb). Also, CFLs contain mercury, a dangerous neurotoxin that is released when the bulbs break. And once CFLs do burn out they must be disposed of properly to avoid releasing mercury into the environment.

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