Roland Piquepaille writes "This is the third year that Scientific American gives these awards. This is a collection of 50 sites which have something really neat to offer: science. "It's a jungle out there. With more than three billion Web pages to sift through, finding great science sites is harder than ever. The good news is the editors at Scientific American have once again trawled the Internet for the best the Web has to offer. We think our list of winners has something for everyone." These 50 sites are classified in ten categories, like anthropology & paleontology or astronomy & astrophysics. In this column, you'll discover my personal four favorite sites, including a great one featuring optical illusions (the link is too complex to be included here)."