After starting his 30-year college teaching career as a non-Christian evolutionist, Dr. Gary Parker became a zealous creationist, eventually serving as professor of biology at the Institute for Creation Research in San Diego, lecturing worldwide for both ICR and Answers in Genesis, writing five science textbooks and seven creation books (translated into over 10 languages), and appearing in numerous films, videos and television programs. Dr. Parker and his wife, Mary, also run family camps, workshops, and credit courses through the Creation Adventures Museum near their home in Arcadia, Florida. Dr. Alan Gillen is a biologist and zoologist with a doctorate in science education. He is an experienced biology instructor at both the high school and college levels. He has authored more than 25 papers and two books in biology, microbiology, zoology, anatomy and physiology and medical issues. He has been active in bringing a Biblical perspective in biology and medicine to the classroom and local churches for over ten years. He is currently a biology professor at Liberty University. John Hudson Tiner received five National Science Foundation teaching fellowships during his 12 years as a teacher of mathematics and science that allowed him to study graduate chemistry, astronomy, and mathematics. He also worked as a mathematician and cartographer for the Defense Mapping Agency, Aerospace Center in St. Louis, MO. Tiner has received numerous honors for his writing, including the Missouri Writer's Guild award for best juvenile book for Exploring the World of Chemistry. He and his wife, Jeanene, live in Missouri.