It’s not possible at this point to date when the stone tools were made, and the layers of sediment in which they were found in Le Moustier’s upper rock shelter were undated, Schmidt said.

An 80,000-year-old bone point found in Eastern Europe challenges the idea that migrating Homo sapiens gave the technology to Neandertals.

The durability of asphalt depends crucially on bitumen—the black binder that holds the small stones in the asphalt together. As the bitumen ages, it can change its properties and become brittle ...