A weed stuck to a dog invented this fastener
After a walk in the Alps in 1941, a Swiss engineer kept pulling burdock burrs off his trousers and his dog, and grew curious enough to put one under a microscope. He found it bristling with tiny hooks that grabbed any loop of fabric or fur. It took him years to copy the trick in cloth, patented in 1955; the name he gave it splices the French words for velvet and hook.