Gravity Could Be Source of Sustainable Energy

In today's energy-hungry world, scientists are constantly revisiting every renewable resource looking for ways to increase efficiency. One researcher in the Netherlands believes even gravity can be harnessed to produce free electricity on a scale sufficient to power small appliances. VOA's George Putic has more.
Originally published at - https://www.voanews.com/a/gravity-could-be-source-sustainable-energy/4416907.html

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