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

Join the Monarch Blitz’s 10th Anniversary: Every Observation Matters

Tiohtià:ke (Montreal), 23 July 2026—The International Monarch Monitoring Blitz is just around the corner! From 31 July to 9 August 2026, we invite everyone across North America to head outside and search for monarch butterflies and milkweed plants.

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Featured Project

Resilience of Indigenous Peoples Traditional Food Systems

2024 Active Ecosystems

Food security is one of the major global challenges facing humanity today. The climate crisis and the depletion of natural resources have put an increased strain on food production. Therefore, promoting and ensuring diverse and sustainable food systems that contribute to human well-being and avoid the deterioration of nature are...

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Global Food Security

Featured Publication

Long-term Impact Assessment of the CEC Monarch Butterfly Conservation Work (1996–2016)

July 16, 2019 2 pages Ecosystems

Since 1996, the Commission for Environmental Cooperation has been actively involved in the conservation of the monarch butterfly (Danaus plexippus), a symbol of trinational environmental cooperation between Canada, Mexico, and the United States. Although interrupted for a few years, CEC efforts to conserve the species intensified after population declines were recorded at overwintering sites in Mexico in 2005 (Rendon-Salinas and Galindo-Leal 2005).

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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.

About the CEC