Leonardo da Vinci is known for the "Mona Lisa" and other art masterpieces. But the Renaissance man also invented fluid dynamics and, perhaps, the scientific method. Fritjof Capra, author of the best-selling, The Tao of Physics writes about Leonardo's investigations of the natural world in his new book, The Science of Leonardo. Capra claims that Leonardo applied the empirical method a century before Galileo. This fascinating interview on NPR shares more.