Beverly McMillan has been a science writer for more than 30 years and holds undergraduate and graduate degrees from the University of California, Berkeley. In addition to her work on this textbook, she has coauthored eleven editions of a human biology text and written or coauthored numerous trade books on scientific subjects and natural history. She has also worked extensively as a content developer and editorial manager in educational and commercial publishing, including co-publishing ventures with Yale University Press, the Smithsonian Institution, the U.S. National Park Service and other partners.