Since 1971, Nature Canada has played an important role in the protection of more than 125,000 square kilometres of lands and waters in Canada’s national parks system. Our current priority is ensuring the creation of four new national parks—the Mealy Mountains in Newfoundland, Bathurst Island in Nunavut, Manitoba Lowlands, and Wolf Lake in the Yukon. Nature Canada also seeks to protect the ecological integrity of existing national parks. Thirty-one of Canada’s national parks are subject to ecological stress—from significant to severe—due to human activities in and around park boundaries, and 13 report that their situation has worsened since 1992. Nature Canada fights developments that pose threats to existing parks, and educates Canadians about what they can do to help conserve Canada’s wilderness legacy.