Sandra Alters is formerly a tenured professor of biology and education at the University of Missouri-St. Louis and a professor of biology at Salem State College (MA). After teaching for over 25 years and teaching non-majors introductory biology for 10 years, Sandy left academia to write full time. She has over 20 years experience in science textbook writing in particular and science writing in general. She and her husband Brian are the only Ph.D. science educators currently authoring a non-majors college biology textbook. This book and its related ancillaries reflect their strong focus on science education. Brian Alters, Sir William Dawson Scholar, holds appointments internationally at McGill University, Montreal, where he recently won the university's highest teaching award, and at Harvard University, Cambridge. Brian is founder and director of the Evolution Education Research Center, a joint involvement between professors of McGill and Harvard universities. He writes primarily about evolution education and teaching.