If we want to make lighting more efficient, perhaps we should start from the beginning: with the shape of the light bulb. Illumitex, a startup based in Austin, Texas, manufactures square LED bulbs ...

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How you light your home is a personal decision. Some prefer LED bulbs that create warm white accent lighting to ensure their home feels cozy. Others prefer maximum brightness, which feels more modern.

What if you could change the wattage or color temperature without replacing a bulb? The Home Depot’s new EcoSmart Universal ...