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History of Recycling Dates Back to Paleolithic
2012-09-21 09:36:04

Although they might not have had pretty symbols and blue buckets to sort their recyclables into like modern humans, a new study shows that humans from the Upper Paleolithic Age recycled their stone artifacts and repurposed them as far back as 13,000 years ago.


Word of the Day
pawl
  • A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.
The word 'pawl' probably comes from a Latin word meaning 'stake'.
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