Cover image: Pictured is a rock painting from the Drakensberg Mountains of South Africa. The painting depicts indigenous “Bushmen” hunter-gatherers, who have lived in southern Africa for thousands of years. Brenna M. Henn et al. report that contemporary South Africans with hunter-gatherer “Bushmen” ancestry living near the Kalahari Desert retain exceptionally high levels of genetic diversity. See the Feature Article by Henn et al. on pages 5154–5162. Image courtesy of Joanna L. Mountain.