Sea Urchin: The Original Self-Sharpening ToolHow nature engineered a tool that gets sharper by breaking.

From the show

Nature Solved It First

Discover the ingenious design behind a sea urchin's perpetually sharp teeth. The secret lies not in their strength, but in their ability to break in a controlled way, constantly revealing a fresh cutting edge. This natural mechanism provides a revolutionary blueprint for designing tools that maintain their sharpness through use, with potential applications in mining, excavation, and machining.