a Nova production co-produced by Pioneer Film and Television Productions Limited with China International TV Corporation with CCTV-10 and PAAN Media Holdings Co. Limited, with KBS Korea in association with PBSd, for WGBH and KBS ; series director, Kate Dart ; senior series producer, Melanie Wallace
Pontecorvo Productions and Thirteen Productions LLC in association with National Geographic Channel, Sky Vision and WNET ; produced and written by Joe Pontecorvo
director, Susan Fleming ; writers, Siobhan Flanagan, Gary Lang ; producer, Susan Fleming ; a production of Coy Wolf Inc. in association with Thirteen Productions LLC for WNET
written and directed by Erna Buffie ; produced by Merit Jensen Carr ; produced in association with the Canadian Broadcasting Corporation ; a Merit Motion Pictures production
a production of Moore & Moore Films and Thirteen ; in association with National Geographic Channel and WNET ; produced by Shane Moore, Janet Hess ; written by Janet Hess
director, Susan Fleming ; writer, Ted Remerowski ; produced in association with the Canadian Broadcasting Corporation ; in association with ARTE France ... [and others] ; produced by A Murder of Crows Inc
produced by Thirteen in association with WNET.org and National Geographic Channel ; executive producer, Fred Kaufman ; written and produced by Gianna Savoie
series producer, David Allen ; story producers, Gaby Bastyra, Joe Loncraine, Laura Flegg, Anna McVey ; a National Georgraphic Television and Passion Planet Production for PBS
produced by Kevin Bachar ; written by Rob Goldberg ; a Pangolin Pictures and Thirteen production in co-production with Terra Mater Factual Studios in association with WNET
produced by NHNZ in association with PBS, ARTE France, CCTV9, Discovery Networks Europe, ZDF, ZDF Enterprises and NHK ; producers, Hayes Baxley, John Cullum, Quinn Berentson ; writers, Craig Meade, John Cullum, Andrew Murray, Mark Everton, Gary Parker
a production of Partisan Pictures and Thirteen in association with WNET.org and National Geographic Channel ; written and produced by Doug Shultz ; series producer for Nature, Bill Murphy ; executive producer for Nature, Fred Kaufman