Which natural structure inspired the revolutionary sustainable redesign of Shinkansen bullet trains in Japan, resulting in 15% less electricity use and 10% faster speeds?

The intersection of product design and sustainability has become crucial in industries connected to the natural world. Innovative companies are finding ways to create products that minimize environmental impact while maintaining functionality. This trivia question explores a groundbreaking biomimicry-inspired product design that revolutionized its industry by looking to nature for solutions.

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• The aerodynamic shape of a dolphin's body
• The kingfisher bird's beak
• The honeycomb structure of beehives
• The water-repelling properties of lotus leaves

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