Compact fluorescent bulbs that produce light equivalent to 100-watt bulbs have been available for a few years and cost as little as $4 each.LEDs are small chips that produce light when current passes through them. In their red and green incarnations, they've been around for decades. Technical breakthroughs in the 90s allowed the manufacture of chips that produce white light.
LED Replacements Hit Stores Empty Of 100W Bulbs
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