Zero to Infinity: A History of Numbers

The Dawn of Numbers (1x2)

Uitzenddatum: Jan 01, 2007

One of the earliest questions was "How many?" Humans have been answering this question for thousands of years—since Sumerian shepherds used pebbles to keep track of their sheep, Mesopotamian merchants kept their accounts on clay tablets, and Darius of Persia used a knotted cord as a calendar.