Tiny structural rods in the bodies of orange puffball sea sponges have evolved the optimal shape to avoid buckling under pressure. That shape could inspire improvements to all kinds of slender structures, from building columns to bicycle spokes.

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Tiny structural rods in the bodies of orange puffball sea sponges have evolved the optimal shape to avoid buckling under pressure. That shape could inspire improvements to all kinds of slender structures, from building columns to bicycle spokes.