By Dr. Felipe Fernandez-Armesto
By Rodolfo Stavenhagen
By Donald C. Johanson, James Shreeve
By Maxim Silverman
By Nick Yapp, Michel Syrett
By J. Williams, R. K. Patient
By Antony Miall, David Milsted
By Tom Holm
By Bullivant, Brian
By Leroi, Armand Marie
By W. Peasley
By June Thoburn, Liz Norford and Stephen Parvez Rashid
By Olson, Steve
By Vasconcelos, Jose
By Burns, Karen Ramey
By Jhally, Sut
By Fernández-Armesto, Dr. Felipe
By Frances D. Burton
By Clancy, Kate
By Thomas, Jerry R., Nelson, Jack K.
By Richard Leakey, Leakey, Richard
By Jaimoukha, Amjad
By Tattersall, Ian
By Bradley, Michael, Clarke, John Henrik
By Donnellan, Craig
By Day, Peter, Catlow, C. R. A.
By Napier, John
By Morgan, Elaine
By Charles Darwin