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A multinational team of scientists has been making a mighty effort to change the light bulb. The prototype they’ve developed is four inches tall, with a familiar tapered shape, and unlighted, it resembles a neon yellow mushroom. Screw it in and switch it on, though, and it blazes with a voluptuous radiance. It represents what people within the lighting industry often call their holy grail, an invention that reproduces the soft luminance of the incandescent bulb — Thomas Edison’s century-old technology — but conforms to much higher standards of energy efficiency and durability. The prototype is supposed to last for more than 22 years, maybe as long as you own your house, so you won’t need to stock up at the supermarket. And that’s fortunate, because one day very soon, traditional incandescent bulbs won’t be available in stores anymore. They’re about to be effectively outlawed.
6/3 NY Times