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North America's environment - air currents, watersheds, and wildlife and their habitat-is not dissected by political borders. But Canada and the United States often measure environmental conditions and report on them using different indicators.
This report examines the environmental indicators used by both nations, suggests a way to develop a set of North American indicators, and using a number of common indicators, provides a snapshot of the level of progress being made in protecting the environmental assets and services that underpin North America's economy.