Bob Weber
Stone tools found at Oldupai Gorge, an African site considered by many to be where humans first appeared are shown in this undated handout photo. To the uninitiated, they look like chipped rocks.
To Julio Mercader of the University of Calgary, they look like two-million-year-old messages from the earliest days of human technology. THE CANADIAN PRESS/HO, Mohammad Javad Shoaee, Arturo Cueva Temprana *MANDATORY CREDIT*
January 07, 2021 - 2:00 AM
To the uninitiated, they look like chipped rocks.
To Julio Mercader of the University of Calgary, they look like two-million-year-old messages from the dawn of human technology.
"It is really the beginnings of technological dependence," said Mercader, lead author of a paper published Thursday in the journal Nature.