People have used thermoelectric generators to power devices off sources like body heat and campfires. It is a modern twist on a technology that has existed for nearly 200 years, called thermoelectric generators.Īs the name suggests, these generators harvest energy from heat, as it naturally moves from a hot place to a cold place. ![]() Even in the U.S., where energy access is universal, rural communities that lack the electrical infrastructure for less expensive power can struggle to keep the lights on.Ī new project wants to illuminate this void - by making energy through the use of nothing other than the cold, night air.Ī product of work by engineers at UCLA and Stanford University, the invention can be made with $30 of materials found at hardware stores and hobby shops. Yet for 1.6 billion people worldwide, those bleak conditions are not the result of a natural disaster, but instead, part of everyday life without stable electricity. Two years ago, Hurricane Maria smashed Puerto Rico’s electrical grid, leaving 3 million people without working lights, many of which stayed off for months. ![]() When Hurricane Dorian smothered the Grand Bahamas and Abaco Islands for 41 hours this month, it knocked out power and plunged nearly 70,000 people into darkness.
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