Our robust Paranthropus cousins thrived in Africa for a million and a half years, making stone tools and sharing the landscape with different Homo species at the dawn of human cultural innovation. The original complete skull (without mandible) of a 1.8 million years old Paranthropus robustus discovered in South Africa -- Ditsong National Museum of Natural History, CC BY-SA 4.0, via Wikimedia Commons By Deborah Barsky The first fossil hominins were discovered at the beginning

Extensive ocher use reflects the culture and cognitive abilities of early humans, who inherited an affinity for red from primate...