On Saturday, October 2 at 4 pm authors Leslie Brunetta and Catherine L. Craig will speak at the Harvard Museum of Natural History, 26 Oxford Street in Cambridge, giving a lecture and book signing of their recently released book Spider Silk: Evolution and 400 Million Years of Spinning, Waiting, Snagging and Mating. Spider webs didn’t just suddenly appear, they evolved step by step over hundreds of millions of years. Join science writer Leslie Brunetta and Catherine L. Craig, evolutionary biologist and research associate at Harvard’s Museum of Comparative Zoology, to learn about the many different ways spiders use silk and why they can help us understand how evolution really works. Whether you’re a gardener, Charlotte’s Web or Spider-Man fan, or an amateur arachnologist of any age–you’ll find much to appreciate in the amazing story of spider silk. Free with museum admission.  For more information log on to www.hmnh.harvard.edu.