Climate change is planetary, ongoing, inevitable and affected by many non-human factors such as El Nino, volcanic eruptions, the level of solar radiation, etc.. Canada cannot, literally, have made any commitments about climate change as such. It can only have made commitments about reducing Canada’s carbon dioxide emissions, for the purpose of reducing the rate of anthropogenic (human caused) climate change. The purpose of the commitment should not to be confused with the commitment itself. To avoid confusion in interpretation, the words “climate change” should be replaced by “carbon dioxide emissions reduction”.
via PIPELINES, THE ENVIRONMENT AND THE ECONOMY: CANADA’S NEW IMPACT ASSESSMENT LAW