Carl died peacefully in Washington, DC on November 6, 2010 of lung cancer. Survived by his companion of 30 years, Clare Feinson and his cousin, Judy Stone. A memorial service was held in May 2011 in conjunction with his final photography exhibit at the Black Rock Arts Center in Germantown, MD. In July 2011 his ashes were scattered at Dolly Sods, WV, where he loved to camp. Memorial contributions may be made to The Nature Conservancy.