About 40,000 years ago, near the dawn of the 30-millennia-long period known as the Upper Paleolithic ... ever-emerging technological evidence Stone Age humans left behind. In this interactive ...

In addition, once cumulative culture is firmly in place within a population (see Middle Stone Age/Middle Paleolithic below), technologies will begin to reflect population-level differences as a ...

Blade cores provided a portable source of stone or obsidian for manufacturing different kinds of tools by flaking off pieces from the core. The basis of many Upper Paleolithic tool forms from both ...