Science editor Alan Boyle's Weblog: Archaeologists say the shapes of finger marks suggest that children as young as 2 years old made drawings on the walls of prehistoric caves.
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Thu, 10/06/2011 - 3:58pm
Science editor Alan Boyle's Weblog: Archaeologists say the shapes of finger marks suggest that children as young as 2 years old made drawings on the walls of prehistoric caves.