An extinct gibbon was found buried in an ancient tomb. Did humans kill them off?

Inside a desk drawer at a Chinese museum, a British paleontologist came across the face and jaw bones of a long-dead gibbon in 2009.
Five years earlier, scientists had discovered the bones inside an elaborate 2,200-year-old tomb belonging to a woman …

View More An extinct gibbon was found buried in an ancient tomb. Did humans kill them off?