Karen Coshof began her career as a commercial photographer, shooting campaigns for Air Canada, Sheraton, Clairol, and other clients, as well as fashion spreads and magazine covers. She then joined Stonehaven Productions, a communications company that produces television as well as specialized projects for the Canadian government and international corporations. At Stonehaven, Karen worked as a scriptwriter, proposal writer, print broker, director, producer, and executive producer.
While at Stonehaven, she conceived and produced The Great Warming, a three-hour Discovery climate-change series narrated by Keanu Reeves and Alanis Morissette that was broadcast in fifteen countries. She also co-executive produced the one-hour national PBS special Global Warming: The Signs and the Science.
She has been a keynote speaker at the Pacific Islands Environmental Conference, the US Fuel Ethanol Workshop, the Canadian Renewable Fuels Association, the World Business Council on Sustainable Development, and the Caribbean Society of Trust and Estate Planning.