Callum Grieve

Director of External Affairs, North America

Callum has 12 years experience working in marketing and communications for both for-profit companies and non-profit organisations.

Prior to his role with The Climate Group, Callum was the Executive Director of the Marion Institute, a think-tank dedicated to promoting innovative, practical and replicable solutions to a wide range of environmental and social-justice challenges.

Previously he ran GLAD WORKS, a full-service advertising agency with clients including the National Park Service, Fire Department of New York, American Heart Association and Kaiser Permanente. Callum has helped to coordinate high-level communications campaigns for Nobel Peace Prize winner Dr. Wangari Maathai and the internationally acclaimed East Coast Bioneers conference.