Like Albert Einstein, Isaac Newton is a perennial symbol of the human intellect and its ability to unveil the secrets of nature. After all, Newton was the man who quantified gravitational attraction, revealed that white light is a mixture of immutable spectral colors, and invented the calculus. And yet, unlike Einstein, Newton engaged in a mysterious and clandestine scientific pursuit that lay outside the realm of physics. Newton was a committed student of alchemy, a pursuit that occupied him for some thirty years if not more. NOVA's documentary, "Newton's Dark Secrets," deals with Newton's alchemical pursuits at length, employing footage of William Newman replicating some of Newton's experiments in an Indiana University Laboratory. The viewer can see "metallic vegetation" and the production of Newton's antimonial alloy, "the net." Images of these products, as well as an interview with Newman and an interactive decoding of one of Newton's alchemical manuscripts can be found at http://www.pbs.org/wgbh/nova/newton.