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Though we call them light bulbs, traditional incandescent bulbs are actually small heaters that give off a little bit of light—something you know if you’ve ever touched a bulb that’s been on for a while. These bulbs were technological wonders when they were patented in 1880, but today they are inefficient compared to new compact fluorescent bulbs.
Today’s compact fluorescent light bulbs (CFLs) give off high-quality light using a fraction of the electricity that traditional incandescent bulbs use. According to Environmental Defense, if every household replaced three 60-watt incandescent light bulbs with CFLs, we would reduce as much pollution as if we took 3.5 million cars off the roads.
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