Study finds plant poison was used on ancient arrows, pointing to sophisticated hunting methods used 60,000 years ago
On stone arrowheads left in a South African rock shelter, researchers found 60,000-year-old traces of plant poison.
A team working in Sweden and South Africa analyzed quartz tips from Umhlatuzana Rock Shelter in KwaZulu-Natal, South Africa.
A residue... [5192 chars]