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

Guide to Drought Indices and Indicators Used in North America

May 12, 2021 62 pages Climate Change

The objective of this study was to improve the ability of regional and local decision-makers and communities to monitor and prepare for drought conditions through the development of a guide to locally relevant indicators for North American climate regions. Data were collected through an online survey that asked a series of questions on respondents’ experiences with drought in their geographical areas. A key series of questions queried the effectiveness of different drought indicators. Responses were analyzed to determine—according to the survey respondents—the most effective drought indicators for short-term and long-term drought in specific North American Köppen climate zones. Online webinars in English and Spanish were held to contribute additional information.

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CEC Publication

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