60,000-year-old traces of arrow poison on quartz arrowheads have been found at the Umhlatuzana Rock Shelter in KwaZulu-Natal, South Africa. This discovery represents the oldest direct evidence of ...

Recent scientific findings suggest that Neanderthals were more susceptible to lead poisoning than their Homo sapiens counterparts. This vulnerability, linked to environmental exposures such as mineral ...

Well over half of the human population is sensitive to poison ivy, poison oak or poison sumac. Rashes usually peak in early summer, and tens of thousands of people in the United States go to the ...