Mark Brooks is a journalist, broadcaster and environmental educator. Follow him on Twitter: @earthgaugeCA.

Margaret is an acclaimed Canadian writer and passionate environmentalist. For more information visit her website at www.margaretatwood.ca

Adjunct professor at York University’s Faculty of Environmental Studies, Peter Love is also president of the Energy Services Association of Canada, and was Ontario’s Chief Energy Conservation Officer.

Rob Thacker is an astrophysicist, teacher, communicator and all round big kid. He is also an associate professor and Canada Research Chair in Computational Astrophysics at St. Mary’s University in Halifax. NASA’s proposed Terrestrial Planet Finder project would study planets beyond our solar system for important clues on the conditions […]

Ray Tomalty is principal of Smart Cities Research, a Montréal consulting firm that specializes in issues related to urban sustainability. He is also an adjunct professor at the School of Urban Planning at McGill University, an A\J editorial board member and a regular contributor to the magazine.

Author, activist and cancer-survivor, Sandra Steingraber is often compared to Rachel Carson. Every week, she writes an essay on environmental health. Follow her at livingdownstream.com/essays.

George Meyer is a long-time writer on The Simpsons. This piece originally appeared on The Green Room – a series of opinion articles on environmental issues running weekly on the BBC News website: www.bbc.co.uk/news. Reprinted with permission.