TED Talks Daily The brilliance of bridges and roads that repair themselves | Mark Miodownik
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Feb 9, 2026 
Mark Miodownik, a materials scientist crafting 'animate matter' that senses damage and self-heals. He explores roads that mend microcracks, bacteria-filled concrete that seals itself, and plastics that disassemble on cue. He outlines how nature-inspired, repairable materials could reshape maintenance, infrastructure, and city life.
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Making Versus Maintaining Materials
- Humans excel at making materials but fail at maintaining them over time.
- Connecting scales of structure with information flow is key to creating self-repairing materials.
Nature’s Multi-Scale Design Principle
- Nature builds multi-scale materials where information links scales to enable repair.
- Life's ability to sense and fix damage comes from information that coordinates molecules, cells, and tissues.
Potholes Begin As Tiny Cracks
- Mark describes roads starting as microscopic cracks that grow into potholes if unchecked.
- His lab embeds nanoparticles actuated by magnetic fields to move and heal microcracks before they widen.