Back in the nineteenth century, Charles Darwin promoted the supposed similarity between humans and chimpanzees. Later DNA studies seemed to support that idea—until someone started taking a closer look and noticed that there had been some...monkey business. In the first installment of this two-part episode, ICR geneticist Dr. Jeff Tomkins explains how chimp and human DNA are not as similar as many people think, and why it matters. (Stay tuned for Part 2!)