Nature’s Genius: How the Kingfisher’s Beak Inspired the Bullet Train (And Other Tales of Biomimicry)
In the 1990s, Japan’s world-famous Shinkansen, or bullet train, had a noisy problem. As it exited the tunnels at over 150 miles per hour, it produced a deafening “tunnel boom” that could be heard a quarter of a mile away. Engineers were baffled by the sonic shockwave created by the train compressing the air. The […]










