He re-located to New York City in 1984. In the early 1990s, he signed on as a contract photographer for National Geographic Magazine, focusing on environmental issues and the changes following the dissolution of the Soviet Union. His work in the region resulted in his exhibition and book, Broken Empire: After the Fall of the USSR, a ten-year retrospective published by National Geographic in 2001. His ongoing coverage of post-Soviet Russia has garnered his distinction as being the western world's foremost color photographer documenting the region.
