Scitable is a free science library and personal learning tool, now brought to you by Nature Publishing Group, a world leading publisher of science information. Scitable currently concentrates on genetics and cell biology, which include the topics of evolution, gene expression, and the rich complexity of cellular processes shared by living organisms. It also offers resources for the budding scientist, with advice about effective science communication and career paths. It is intended for college undergraduate faculty and students. Future plans involve extension of Scitable to other fields within the life sciences, as well as to other audiences.