By National Geographic Kids
By Lewis, Liz, Ian, Guy
By National Geographic Kids Magazine, National Geographic Kids
By Lockyer H., Bruce F. F., Harrison R. K.
By Duffy, Sean
By National Geographic, Cocotos, Tom
By Loftas, Tony
By The Economist
By National Geographic Society (U. S.), Malarkey, Curtis, Segal, Julie, Zook, Cheryl, Herbert, Truly, Errig, Chuck
By Lye, Keith
By Harris, Tim
By Morris, Neil
By Bailey, Donna, Wong, Ansel
By Bailey, Donna
By Knapp, Brian
By Bailey, Donna, Chapman, Jennifer
By Pickford, Nigel
By Forbes, Scott, Sale, Colin
By Wiegand, Dr Patrick
By Wiegand, Dr. Patrick (edit).
By Defoe, Gideon
By Dawson, Richard
By Baussier, Sylvie, Balicevic, Didier
By National Geographic Kids, Modany, Angela
By Green, Dr Jen
By Bull, Michael, Back, Les
By Mazumdar, Dipak, Sarkar, Sandip