In order to construct the index, we assign equal weight to composite indicators of the protection of human health and well-being and to indi- cators of the protection of ecosystems. [...] In many areas of environmental quality that matter the most to Canadians, we compare favourably to the rest of the OECD and, by implication, the rest of the world. [...] This is followed by a detailed discussion and presentation of the results for the seven indicators of human health and well-being (section 3) and the ten indica- tors of the protection of ecosystems (section 4) that make up the composite index. [...] When aggre- gating the scores, we assign 50% weight to indicators of the protection of human health and well-being and 50% weight to indicators of the protection of ecosystems (Section 2 provides more details on the methods used). [...] The majority were supplied by the OECD, with the remainder from the World Bank, the United Nations Food and Agriculture Organization (FAO), and the Yale Center for Environmental Law and Policy.