produced by NHNZ in association with PBS, ARTE France, CCTV9, Discovery Networks Europe, ZDF, ZDF Enterprises and NHK ; producers, John Cullum, Hayes Baxley, and Quinn Berentson ; writers, Craig Meade, John Cullum, Andrew Murray, Mark Everton, and Gary Parker
produced by NHNZ in association with PBS, ARTE France, CCTV9, Discovery Networks Europe, ZDF, ZDF Enterprises and NHK ; producers, John Cullum, Hayes Baxley, and Quinn Berentson ; writers, Craig Meade, John Cullum, Andrew Murray, Mark Everton, and Gary Parker
produced by NHNZ in association with PBS, ARTE France, CCTV9, Discovery Networks Europe, ZDF, ZDF Enterprises and NHK ; producers, John Cullum, Hayes Baxley, and Quinn Berentson ; writers, Craig Meade, John Cullum, Andrew Murray, Mark Everton, and Gary Parker
filmed, produced and directed by Marcel Mettelsiefen ; co-produced and edited by Stephen Ellis, A.C.E. ; senior producer, Dan Edge ; an ITN production for WGBH/Frontline in association with Channel 4 and ZDF
produced by NHNZ in association with PBS, ARTE France, CCTV9, Discovery Networks Europe, ZDF, ZDF Enterprises and NHK ; producers, John Cullum, Hayes Baxley, and Quinn Berentson ; writers, Craig Meade, John Cullum, Andrew Murray, Mark Everton, and Gary Parker
produced by NHNZ in association with PBS, ARTE France, CCTV9, Discovery Networks Europe, ZDF, ZDF Enterprises and NHK ; producers, John Cullum, Hayes Baxley, and Quinn Berentson ; writers, Craig Meade, John Cullum, Andrew Murray, Mark Everton, and Gary Parker