This episode tells the remarkable story of how a simple walk in the Swiss countryside led to one of the most useful inventions of the modern age. In 1941, Swiss engineer George de Mestral noticed burrs clinging stubbornly to his pants and his dog’s fur. Instead of brushing them off, he examined them under a microscope and discovered that each burr was covered in tiny hooks that naturally latched onto loops in fabric.

Inspired by this natural mechanism, de Mestral spent years experimenting until he created a synthetic version using nylon: one strip lined with tiny hooks, the other with small loops. When pressed together, they formed a secure but easily detachable bond — just like burrs in nature. In 1955, he patented the invention and named it Velcro, combining the French words for velve ...