Study finds that prehistoric humans 'recycled' discarded or broken flint tools 400,000 years ago to create small, sharp utensils with specific functions. They were used with great precision and accuracy to perform specific tasks involved in the processing of animal products and vegetal materials.

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Study finds that prehistoric humans 'recycled' discarded or broken flint tools 400,000 years ago to create small, sharp utensils with specific functions. They were used with great precision and accuracy to perform specific tasks involved in the processing of animal products and vegetal materials.