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6 Energy-Efficient Light Bulbs That Actually Look Good: 2018 | The Strategist
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Consider energy efficient lightbulbs in your home?
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Are low-energy light bulbs and LEDs available with a standard screw fitting? – Energuide
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Medical experts who refuse to use low-energy lightbulbs to protect against skin cancer and blindness | Daily Mail Online
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How do energy saving light bulbs work? | Live Science
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