Shinkansen Bullet Train
The kingfisher dives into the water from the air without making a splash, mostly thanks to its highly efficiently-shaped beak. In a stroke of genius, engineer and bird enthusiast Eiji Nakatsu realized that the same shape could solve an annoying problem faced by Japan’s ultra-fast bullet trains, which created a loud booming sound like a thunder clap whenever they exited a tunnel. The nose of the train was pushing air at high speeds, creating a wall of wind that not only made the loud sound, but also slowed down the train. The new, kingfisher-inspired train nose eliminates this problem, making the trains up to 20 percent more fuel efficient.
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