Why Are There Stones Along Railway Tracks?
15:53
Why Railroads Don't Need Expansion Joints
9:16
Underwater Constructions | How do Engineers Make Them?
4:46
Por que eles não têm pára-quedas para os passageiros em aviões comerciais?
11:36
Why Don't Ships Have Headlights?
13:56
How petrol pumps know when to turn themselves off
49:18
World’s Toughest Train Rides | Siberia: On Frozen Rails | Free Documentary
18:43
O Surpreendente Gênio por Trás das Máquinas de Costura
9:29