CHINA: Obscure engravings on animal bones from the site of Lingjing in Henan Province suggest that early hominins who lived there 125,000 years ago may have had more advanced cognitive abilities than once believed. The mysterious markings proved to have been etched into the bone, which was then rubbed with red ochre powder to make the markings more visible. Experts do not yet know why early humans made these abstract designs, nor what they represent.