Progressive aridification in East Africa over the last half million years and implications for human evolution

R. Bernhart Owen, Veronica M. Muiruri, Tim K. Lowenstein, Robin W. Renaut, Nathan Rabideaux, Shangde Luo, Alan L. Deino, Mark J. Sier, Guillaume Dupont-Nivet, Emma P. McNulty, Kennie Leet, Andrew Cohen, Christopher Campisano, Daniel Deocampo, Chuan Chou Shen, Anne Billingsley, Anthony Mbuthia