Unfortunately, very little has changed about the light bulb since the turn of the 20th century. The device still wastes 95 percent of the electricity it consumes. And thanks to a deliberate design by manufacturers to encourage repeat sales (i.e. they are deliberately engineered to burn out), light bulbs still burn out after about 1,000 hours, requiring consumers to toss them into the garbage and buy new ones. (It's true: Light bulbs were invented in 1991 that last 60,000 hours, but companies refuse to mass produce them, since repeat sales of light bulbs would plummet. The bulbs sold to consumers today are designed to self-destruct.)
Incandescent lights are a safety hazard (glass shards, anyone?) and an environmental hazard, since they produce massive carbon dioxide emissions from the coal power plants used to power these bulbs. They're incredibly cheap to purchase up front, but astonishingly expensive to use over time. A typical incandescent light bulb is ten times more expensive to operate than an LED light bulb. It also produces ten times as much carbon dioxide that contributes to global warming. Want to warm the climate? Turn on the lights!
So why, then, are so many people still using incandescent light bulbs? Primarily because they have no idea what it costs to actually operate them. The fact that these light bulbs are secretly slipping dollars out of your pocket every time they're used seems to go unnoticed by most consumers. All they see is the price tag at the store. And there, incandescent lights look really cheap.
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