When you're building a railroad 16,400 feet above sea level, the most important question is: How do we keep our passengers breathing? Learn more about the construction of the world's tallest railway on tonight's 'Impossible Engineering' at 9pm ET on Science Channel! | Science Channel
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When you're building a railroad 16,400 feet above sea level, the most important question is: How do we keep our passengers breathing? Learn more about the construction of the world's tallest railway on tonight's 'Impossible Engineering' at 9pm ET on Science Channel! | Science Channel
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