Nature and wildlife photographer whose work has been featured in BBC Wildlife, National Parks Magazine and The New York Times. He is one of the co-founders of the International League of Conservation Photographers.
He majored in biology at Heidelberg University in Tiffin, Ohio.
His photography appears in several books, including Yellowstone to Yukon: Freedom to Roam (2005) and Journey to the Arctic (2008).
He married a woman named Emil and sons named Nanuk and Silvan.
He and Jim Richardson have both had their work appear in National Geographic.