Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Prehistoric Settlement in Turkey Bears Telltale Signs of Modern Woes Reuters WASHINGTON - Overcrowding. Violence. Infectious diseases. Environmental degradation. It may sound like the worst of modern mega-cities. But people encountered these very same problems when the first large settlements were being established millennia ago as humans began to swap a nomadic hunter-gatherer existence for a lifestyle centered on farming, scientists said on Monday, based on findings from a prehistoric site in south-central Turkey. The researchers examined 742 human skeletons unearthed at the prehistoric ruins of Catalhoyuk, inhabited from 9,100 to 7,950 years ago during a pivotal time in human evolution, for clues about what life was like at one of the earliest sizable settlements in the archeological record. At its peak, 3,500 to 8,000 people lived there, with the researchers calling it a "proto-city." High rate of infections The residents experienced a high rate of infections, as seen in their teeth and bones, probably caused by diseases spreading in crowded conditions amid challenges to proper hygiene, the researchers said. Overcrowding may have contributed to interpersonal violence. Many skulls bore evidence of healed fractures to the top or back of the cranium, some with multiple injuries. The shape of these injuries indicates they may have been caused by hard clay balls found at Catalhoyuk that researchers suspect were used as projectiles from a sling weapon .