Bulbs That Won't Charge Up Your BillsDon Dunn
The short, glowing tube of light emanating from a stubby base looks like a miniature version of Darth Vader's laser sword in Star Wars. But it's merely the hottest--no, the coolest--thing in energy-efficient lighting. Called compact fluorescent bulbs, they offer such potential for conserving energy at home that at least one utility gave them away free.
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