60,000 years ago humans were already using poisoned arrows

Sixty thousand years ago, humans in southern Africa were already mastering natures chemistry. Scientists have discovered chemical traces of poison from the deadly gifbol plant on ancient quartz arrowheads found in South Africa - the oldest direct evidence of arrow poison ever identified. The find reveals that these early hunters didnt just invent the bow and arrow earlier than once believed - they also knew how to enhance their weapons with toxic plant compounds to make hunts more effective.