Timothy D Callahan Author

Donald R. Prothero taught college geology and paleontology for 40 years, at Caltech, Columbia, Cal Poly Pomona, and Occidental, Knox, Vassar, Glendale, Mt. San Antonio, and Pierce Colleges. He is the author of numerous books and scientific papers including Reality Check: How Science Deniers Threaten Our Future and Abominable Science! Origins of the Yeti, Nessie, and Other Famous Cryptids.

Timothy D. Callahan was trained as an artist and worked for more than 20 years in the animation industry. Throughout his life he has also had an active interest in the sciences and the study of mythology and religious belief. He is the religion editor for Skeptic Magazine.