Leave your feedback Share Copy URL https://www.pbs.org/newshour/show/nature-photographer-captures-biodiversity-on-film Email Facebook Twitter LinkedIn Pinterest Tumblr Share on Facebook Share on Twitter Story Joel Sartore, a freelance photographer, has been working his way through zoos and rescue organizations across the country as part of a personal mission to photograph all 6,000 captive species in the United States before they disappear.