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

Air Quality Improvement for Environmental Justice

2022 Active Pollutants

Black carbon (BC) or “soot” ─a component of fine particulate matter (PM)─ is an important air contaminant that not only affects public health but also our climate. Our countries’ systems for monitoring air pollution have limited coverage, with millions of people across North America living in communities that have no...

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Air Quality Improvement

Featured Publication

Building Community Solutions to Marine Litter in North America

Salish Sea

January 15, 2020 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.

About the CEC