By Bramwell, Martyn, Parsons, Jayne
By Hayden, Kate
By Allaby, Michael
By Clifford, Nicholas, Valentine, Gill
By Burnie, David
By Burnie, David, Juniper, Tony
By Hynes, Margaret
By Sean Callery
By Jones, Tom, Doran, David
By Lye, Keith, Porter, Malcolm
By Kerrod, Robin
By Jacqui Bailey
By Eveland, Jennifer, Atkinson, Susy
By Hubbard, Phil, Kitchin, Rob, Valentine, Gill
By Dicken, Peter
By National Geographic
By Charles G. Clarke, Dayton Duncan
By Bendavid-Val, Leah
By Burian, Peter K., Caputo, Robert
By Lekuton, Joseph Lemasolai, Viola, Herman J., National Geographic Kids
By National Geographic Society
By Suplee, Curt
By Watson, Charlie, Knight, Norman
By Hutchinson, Tim
By Fonda, Suzanne, National Geographic Society (U. S.)
By Chancellor, Deborah