The document discusses the role of governments in environmental protection and policy making. It explains that governments can help protect environmental interests through policies that address market failures, full-cost pricing, and the tragedy of the commons. The policy making process involves legislation, funding, rule-writing, and enforcement that is influenced by political processes. Individuals can also work to influence environmental policies through civic engagement, voting, and activism. Environmental laws and regulations are used to control pollution, set safety standards, and protect species. International cooperation and treaties are needed to address global environmental challenges but have been inadequate due to lack of funding and enforcement.