The Evolution Of Steam Locomotive To Modern Bullet Trains | How Trains Changed The World

Ever since the invention of trains, engineers have been battling it out to create the fastest trains. Find out how train s have evolved from their conception to the ones you know today. Subscribe to Discovery UK for more great clips: http://www.youtube.com/subscription_center?add_user=DiscoveryTV Follow Discovery UK on Twitter: http://www.twitter.com/DiscoveryUK