We realized a long, long time ago--centuries, perhaps even thousands of years before the publication of Popular Science, shocking as that sounds--that nature provides the best blueprint for invention. We've borrowed canals from beavers, towers from termites and reflectors from cat's eyes. More recently, George de Mestral patented Velcro in the 1940s after seeing how burrs stuck on the fur of his dog. Although the words "bionics," "biomimetics," and "biomimicry" became popular only after the 1960s, history shows that nature has always provided ideas on solving everyday problems. Our archives don't go back to the time of Leonardo da Vinci and his bird-like flying machines, but we can take you to the late 19th century, where we applied those same principles for building our first practical airplanes.