A progressively wetter climate in southern East Africa over the past 1.3 million years

T. C. Johnson, J. P. Werne, E. T. Brown, A. Abbott, M. Berke, B. A. Steinman, J. Halbur, Sergio Contreras, S. Grosshuesch, A. Deino, C. A. Scholz, R. P. Lyons, S. Schouten, J. S.Sinninghe Damsté