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2:02
YouTube
MocomiKids
6 Biggest Unsolved Mysteries in Science - Facts for Kids | Educational Videos by Mocomi
https://mocomi.com/ presents: 10 Unsolved Science Mysteries of the World In the Earth’s outer core, there is liquid iron. Its motion generates a magnetic field. Every few hundred thousand years, the poles interchange. How? Why? We don’t know. The Wow! Signal – Jerry Ehman, while working for the Search for Extra Terrestrial Intelligence in ...
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Jul 14, 2014
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