Three countries working together to protect our shared environment

International collaboration between Canada, Mexico and the United States on environmental issues of common interest

In the Spotlight

International Monarch Monitoring Blitz

Every Observation Matters!

The International Monarch Monitoring Blitz is back for its 10th anniversary! From 31 July to 9 August 2026, join the celebration and help search for monarch butterflies and milkweed plants in your area.

International Monarch Monitoring Blitz

Monarch Monitoring Blitz

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Featured Project

Tracking Pollutant Releases and Transfers in North America

Initiative Active Pollutants

The CEC's North American Pollutant Release and Transfer Register (NAPRTR) Initiative promotes public access to data and information reported by industrial facilities in North America, in order to improve understanding of the sources and management of pollutants of common concern across the region and support decision-making relative to pollution prevention...

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Nuclear power plant - AirNow

Featured Publication

Inventory of TEK Projects and Engagement in Canada

September 1, 2020 106 pages Ecosystems

This study identifies – but does not assess the efficacy of – existing frameworks in Canada for the engagement of Indigenous communities associated with Traditional Ecological Knowledge (TEK) at the international, national, provincial / territorial, and community levels, as well as TEK-related projects undertaken by universities and research institutions, public and government institutions, and private sector partners in Canada that have included the engagement of Indigenous and local communities.

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CEC Publication Cover

What We Do

We conduct research, provide tools and training, and provide a unique space for decision-makers and the public to engage on environmental policy issues affecting the North American region.