Biology: A Guide to the Natural World, 2/e, the most successful 1/e introductory biology text published in the last 10 years remains the only text written and illustrated from the ground up for non-majors. The “biological literacy” approach continues to be paramount—from the journalistic writing style and original, Krogh specific illustrations to the seamless integration of media. The second edition boasts 2 new chapters (Ch. 21 Animal Diversity and Ch. 31 on Animal Behavior), many exciting content updates (see below for details), new MediaTutors for students, as well as an expanded new media program for instructors that puts them in the driver's seat.