The world's oldest known human tumor has been found in the rib bone of a Neanderthal who lived more than 120,000 years ago. The bone was evacuated from a site in Krapina, Croatia more than 100 years ago and has been found to have contracted the fibrous dysplasia tumor, a cancer which is common among modern-day humans. This discovery by David Frayer from the University of Kansas predates previous evidence of the tumor by more than 100,000 years. Before this discovery, the earliest bone tumor was seen in an Egyptian mummy around 2,000 years ago. David Frayer, professor of anthropology...