Callum Grieve is global director of communication for The Climate Group.
Callum has 16 years experience in marketing and communications for both private-sector and non-profit organizations.
Prior to his role with The Climate Group, Callum was the executive director of the Marion Institute, a sustainability think-tank dedicated to promoting innovative, practical and replicable solutions to a wide range of environmental and social-justice challenges.
Previously, he ran 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.