By Richard E. Leakey, Roger Lewin
By Pal Kolsto
By Anthony D. Smith (London School of Economics)
By Morris, John
By Roy Ellen, Katsuyoshi Fukui
By Peters, Scott
By Mary Catherine Bateson
By Katharine Makower
By Christopher Hibbert
By Ian Stead
By Gowar, Mick, Harknett, Sarah-Jane, Collins Big Cat
By Julian Richards (Archaemedia (United Kingdom))
By John Wolffe
By Stephen Jay Gould, Paul McGarr, Steven Rose
By George E. Hein (Lesley University, Massachusetts, USA)
By Royston, Angela, Pollard, Michael
By Lamorna Ash
By Christopher Bollas
By Edward I. Bailey
By Edmund Leach
By Celestin Monga
By Roger Andersen
By Peter Redfield
By Simon Sinclair
By Orkideh Behrouzan
By Michael Haralambos, R.M. HEALD, Martin Holborn
By Martin Easdown
By Cat Bohannon
By Mark Duffy
By Stephen Johnson