A fossil collector discovered a portion of an Ice Age-era Columbian mammoth tusk in Mississippi. Scientists excavated and stabilized the tusk, confirming it belonged to a mammoth. The discovery offers insight into the prehistoric wildlife of the area.
Gobekli Tepe in Turkey may house the world's oldest lunisolar calendar and serve as a memorial to a comet strike 13,000 years ago, leading to an ice age and extinction of large animals.