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Subscribe to our YouTube channel for free here: https://sc.mp/subscribe-youtube China has launched the world’s first suspended maglev line built with permanent magnets that can keep a “sky train” afloat forever, even when it is not being supplied with power. The 800-metre (2,600-foot) experimental Red Rail in southern China’s Xingguo county, Jiangxi province, used powerful magnets rich in rare earth elements to produce a constantly repelling…