Climate change law is a body of legislature that seeks to govern our impact on the climate and environment. In Canada, there are a combination of federal and provincial laws that make up our body of climate change legislature. Some of the most important federal acts are the Canada National Parks Act, Nuclear Safety and Control Act, Canadian Environmental Assessment Act, and Environmental Protection Act. The Environmental Protection Act (EPA) is dedicated to preventing pollution (originally the Clean Air Act). Through this act, all new substances – and therefore potential pollutants – must be evaluated for health and environmental risks prior to their use in Canada. All pre-existing substances were analyzed to make sure they are consistent with EPA's guidelines. This has led to a Chemical Management Plan and has helped reduce harmful toxic substances and health hazards from accumulating in our environment. This is one of many examples of how climate change laws work. There are many other laws that govern our waters, fisheries, wildlife, endangered species, soil conservation, etc.