Israeli scientists find evidence of 'recycling' 400,000 years ago

“Recycling was a way of life for these people,” said Prof. Ran Barkai, one of the Israeli researchers.

Experimental activity of cutting tubers with a small recycled flake and close up of its prehension.  (photo credit: FLAVIA VENDITTI)
Experimental activity of cutting tubers with a small recycled flake and close up of its prehension.
(photo credit: FLAVIA VENDITTI)
A new Tel Aviv University study found that there is evidence that 400,000 years ago, prehistoric humans "recycled" their broken flint, the researchers announced on Wednesday. They transformed their discarded flint tools to make smaller utensils with specific functions. 
Example of a small recycled archaeological flake from Qesem Cave.
Example of a small recycled archaeological flake from Qesem Cave.
Example of a small recycled archaeological flake from Qesem Cave.
Example of a small recycled archaeological flake from Qesem Cave.
“Recycling was a way of life for these people,” said Prof. Ran Barkai, one of the Israeli researchers. “It has long been a part of human evolution and culture. Now, for the first time, we are discovering the specific uses of the recycled ‘tool kit’ at Qesem Cave.”
The Qesem Cave is located outside of Tel Aviv and since its discovery in 2000, it has been used to discover countless insights into the life of those from thousands of years ago. 
“We used microscopic and chemical analyses to discover that these small and sharp recycled tools were specifically produced to process animal resources like meat, hide, fat and bones,” postdoctoral fellow Dr. Flavia Venditti explained. “We also found evidence of plant and tuber processing, which demonstrated that they were also part of the hominids’ diet and subsistence strategies.”
“Our data shows that lithic recycling at Qesem Cave was not occasional and not provoked by the scarcity of flint,” Venditti concludes. “On the contrary, it was a conscious behavior which allowed early humans to quickly obtain tiny sharp tools to be used in tasks where precision and accuracy were essential.”