Andrew Kett is an educator and conservationist. He is the Manager of Education for Credit Valley Conservation and facilitates the Young Conservation Professionals Leadership Program, based at the University of Guelph. He holds a Master’s degree in Adult Education and Community Development from the Ontario Institute for Studies in Education of the University of Toronto, and is a member of the Ontario College of Teachers. He lives in Toronto and comes from Norfolk County, Ontario, where his family has lived for seven generations.


A passionate public interest advocate, Dr. Lintner is Principal of the recently established enterprise focusing on sustainability law and policy – Lintner Law. Prior to moving to private practice, she was employed as a staff lawyer and economist with Ecojustice Canada for more than a decade. She has taught and researched at numerous post-secondary institutions, including the University of Guelph, Wilfrid Laurier University, Memorial University of Newfoundland and Labrador, Balsillie School of International Affairs, Osgoode Hall Law School, and Queen’s University. Dr. Lintner specializes in environmental assessment, conservation and water law, and in Ontario’s Environmental Bill of Rights.

GORD BALL, PhD (Vice-Chair)

Gordon Ball enjoyed 30+ years of educational and development work in Canada and abroad. The Sustainability Network combines two of his primary interests: organizational development and long-term environmental sustainability. With other Past Presidents of the Couchiching Conservancy, he is currently building a $10 million endowment fund. Gord lives with his wife in a rural Ontario cooperative in a house they built themselves. They love their visits from four grandchildren. He holds an MSW from McGill and a Doctorate in Education from U of T.


Jody Grewal is currently a second year doctoral student at Harvard Business School, studying how companies are managing growing pressure to manage environmental and social impact, in addition to maximizing profits for shareholders. She worked at Deloitte in assurance & advisory, and then as a consultant in the Corporate Sustainability Strategy group. She moved into a multinational mining company headquartered in Toronto to assist the leadership of the company to develop an integrated financial and sustainability strategy, and continues to provide consulting services to this company. Jody studied financial economics in her undergraduate program, and obtained a Master’s degree in Accounting and Finance in 2011, along with the Chartered Professional Accountant designation in 2012.

Jeffrey Ma, MBA, LLB

Jeffrey Ma is currently Legal Counsel at the Municipal Property Assessment Corporation (MPAC). Prior to his current position, Jeffrey was an Articling and Summer Student at the law firm Blake, Cassels & Graydon LLP. Jeffrey has also volunteered and worked for a number of non-profits and startups including his current positions on the Board of Directors of the Community Innovation Lab, Pathway to Possibilities and the Rotman Commerce Alumni Steering Committee. Jeffrey holds a J.D./M.B.A. and a B.COM from the University of Toronto.


Joanne Nonnekes has two great passions in life: natural history and education. She is a long-time volunteer with Bird Studies Canada and the Toronto Region Conservation Authority and is the founding president of the Kleinburg chapter of the Humber Valley Heritage Trail Association. Joanne holds a Masters in Environmental Studies and a Masters Certificate in Organization Development. Her career has evolved from high school biology teacher to university administrative roles and she is currently with the Ontario Institute for Studies in Education at the University of Toronto.


Learie works as an Advisor Environmental Planning at the Region of Peel. He has previously worked with three Conservation Authorities, the City of Markham, the Ontario Ministry of Environment and Climate Change and the public sector in the Caribbean. He has been recognized for his role in mentoring new Canadians and sits on the Technology Program Advisory Committee at Seneca College and the Green Economy Bridging Program Advisory Council at Ryerson University. He is a Registered Professional Planner (RPP), a Canadian Certified Environmental Practitioner (EP), holds two Masters Degrees (University of Toronto and Ryerson University) and completed the Environmental Economics and Policy Analysis Program at Harvard University’s Kennedy School of Government.


Tonya works as Senior Manager for Corporate Responsibility within the PwC Canada Foundation. Tonya was selected as one of Canada’s 150 Emerging Environmental Leaders and was appointed to the Program Advisory Council for Ryerson’s G. Raymond Chang School of Continuing Education post-graduate Certificate in Sustainability. She holds a degree in Environmental Studies and Geography from York University and a post-graduate certificate in Corporate Communications and Public Relations.


Sarah Kafka is an Associate Director of Social Impact, at LIFT Philanthropy Partners where she helps non-profits build capacity and scale. Prior to LIFT, she spent six years as a Program Officer at the Robertson Foundation, a New York City-based family foundation with a focus on the environment, education and medical research and managed a sister grantmaking foundation in New Zealand. Previously, Sarah worked at a start-up consulting firm where she helped companies, organizations and individuals start and manage cause-related initiatives. Her prior experience includes working as an Account Executive for non-profit clients at an advertising agency, supporting an operating foundation in Haiti, and as an MBA intern consulting for the US National Park Service. Sarah received her MBA from Columbia Business School in 2012 and a degree in International Relations from Tufts University in 2006..

Dani Mailing


With a deep passion for issues related to the environment and social justice, Dani believes in the power of the philanthropic sector to address the challenges of our time. Dani is the National Manager at PetSmart Charities Canada. She has previously held roles at Small Change Fund, EcoSpark and the Catherine Donnelly Foundation. In addition to the Sustainability Network, Dani volunteers on the program planning committee of the Canadian Environmental Grantmakers Network, and as treasurer for Be Good Be Social, a free social media conference for non-profits.


Miles DePaul is the Head of Marketing for North America at Mailjet, Europe’s leading email service provider. Prior to this, Miles has co-founded and operated a digital media agency (Brothers DePaul) and an environmental non-profit (Sustainability CoLab) with a particular passion for using storytelling and media to create change. Miles holds a Master of International Public Policy, a Bachelors of Commerce, and a Diploma in Social Innovation. Look for him on one of the many ice rinks around Toronto or pursuing passion projects online.

Our Strategic Advisers

DIANNE RUSSELL, Institute for Conservation Leadership

BRUCE LOURIE, Ivey Foundation

GEOFF CAPE, Evergreen

JOHN LOUNDS, Nature Conservancy of Canada

DEVON PAGE, Ecojustice

DAVID LOVE, Agents of Good

PAT LETIZIA, Alberta Ecotrust Foundation