Researchers have discovered ancient dental fillings in northern Italy, the world's oldest. The fillings were found inside a pair of 13,000-year-old front teeth. They were made of bitumen, a semi-solid form of petroleum.
The grandfather of all modern marine turtles hailed from the Deep South. New research suggests the species Ctenochelys acris was the patriarch of the lineage that yielded the green sea turtle, Kemp's ridley, the loggerhead and many others.