Why Are Rails Shaped Like That?
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15:53
Why Railroads Don't Need Expansion Joints
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16:18
Why Locomotives Don't Have Tires
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18:43
The Surprising Genius of Sewing Machines
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15:57
Why French Trains Are The Fastest
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14:41
Cómo funciona la energía trifásica: ¿por qué 3 fases?
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24:36
This Engine Could Seriously Threaten Boeing!
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16:59
Inside Europe's $1BN Abandoned Mega-Build
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16:59