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https://in.mashable.com/science/7103/scientists-have-figured-out-a-way-to-turn-heat-into-electricity-using-magnets
https://www.scientificamerican.com/podcast/episode/earths-magnetic-field-initiates-pole-flip-many-millennia-before-the-switch/
https://www.scientificamerican.com/podcast/episode/earths-magnetic-field-initiates-pole-flip-many-millennia-before-the-switch/