Douglas Chadwick is a wildlife biologist who has studied mountain goats and grizzlies in the Rockies, elephants in Africa, and whales in the world’s oceans. He has been a frequent contributor to National Geographic since 1977. Chadwick is a board member of Vital Ground, a nonprofit land trust that has helped safeguard more than 600,000 acres of wildlife habitat in Alaska, Canada, and the western United States. He is also a director of the Gobi Bear Fund, which seeks to restore population of the most endangered of all the yellow bears. Chadwick lives in Whitefish, Montana.