21 Oct 04:16
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720p DocumentaryElectrical linemen repair 345,000-volt power lines from helicopters as part of America's nearly two-century hardwiring story; fiber optic cables transmitting light since the late 1970s remain vital infrastructure alongside wireless technology
Modern Marvels is a documentary channel from United States. It broadcasts in 720p. You can watch it live for free: we check its signal daily and show a recent screenshot of what is on air.
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