Archived Content

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Findings

Air quality

Ground-level ozone and fine particulate matter (PM_2.5) are two key components of smog and have significant negative impacts on human health, on the natural environment and, consequently, on economic performance. Human exposure to these pollutants is of concern because there are no established thresholds below which these pollutants are safe and do not pose a risk to human health. [Full text]

Greenhouse gas emissions

Greenhouse gas emissions from human activities enhance the Earth’s natural greenhouse effect, thereby contributing to global climate change. [Full text]

Freshwater quality

Water quality in Canada is under pressure from a range of sources, including human settlement, agriculture and industrial activities. Degraded water quality can affect both aquatic life and human uses of water for recreation, agriculture, and as source water for drinking. [Full text]

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Date modified: 2006-11-23	Important Notices