In February 2014, Bill Nye traveled to Kentucky to debate evolution with Ken Ham, a prominent creationist. Following the event, he set out to continue the conversation in what’s become his new book, Undeniable: Evolution and the Science of Creation. Drawing on the wonderment that spurred his own interest in science as a child, Nye approaches evolution as the bedrock to scientific knowledge and education. He also shares his concern that failure to accept evolution will prevent the U.S. from keeping pace with the technological advancements of other countries. Read an excerpt from Nye’s book here.