1. The Piltdown Man

In 1912, the discovery of the Piltdown Man in Sussex, England, sent shockwaves through the scientific community. Touted as the long-sought “missing link” between apes and humans, it dramatically influenced evolutionary theory for decades. The skull fragments and jawbone seemed to fit perfectly—until 1953, when chemical analysis revealed a stunning truth: the skull was human, but the jaw belonged to an orangutan. This elaborate forgery misled researchers for over 40 years, highlighting the risks of confirmation bias and the importance of skepticism in science. Read more