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

Our Impact

Explore how the CEC’s work over the years has delivered tangible environmental and social outcomes across North America — from scientific studies that guided environmental standards, regulations and policies in Canada, Mexico and the United-States, to trinational conservation strategies, community grants and geospatial mapping projects. Whether you’re a policymaker, conservation expert, researcher or simply interested in North American environmental cooperation, this page offers a comprehensive overview of not only what the CEC has achieved — but how and why those efforts have unfolded.

Our Impact

Topics

Featured Project

Strengthening Evidence-Based Collaborative Monarch Butterfly Conservation

2025 Active Ecosystems

Monarch butterfly population has experienced a significant decline over the last few decades. While the 2024-2025 wintering season saw an increase from the previous year, this remains one of the lowest recorded population sizes and highlights the ongoing challenges for monarch conservation, as well as the urgent need for coordinated,...

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Monarch Butterfly Conservation

Featured Publication

Building Community Solutions to Marine Litter in North America

Salish Sea

March 14, 2025 4 pages Ecosystems Pollutants

Common trash from consumer goods in coastal and inland locations makes up the majority of trash that ends up polluting our oceans. Marine litter damages ecosystems and kills marine life, threatening our food supplies, tourism, the fishing industry, and our economies. Through its 2017-2018 project “Building Community Solutions to Marine Litter”, the CEC led the first local, community-based approach in two transboundary areas – the Tijuana River and the Salish Sea – to help to identify and implement low-cost and low-technology solutions to local marine litter. This set of brochures includes a project overview and details the engagement processes and activities carried out in the Tijuana River and the Salish Sea watersheds.

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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.