‘Movements, parties, policies’ explains the ‘machinery’ of environmental politics—the movement that nurtures and expresses the politics, the parties that are the electoral vehicles for getting the politics into the system, and the array of policy instruments that are available for putting society on a more sustainable footing. The organizations that make up the environmental movement can be categorized into different groups: public interest lobbies, professional protest organizations, participatory pressure groups, participatory protest organizations, and intentional communities. Green political parties are considered along with environmental policy-making. What are the challenges and what are the policy tools that politicians have at their disposal to meet them?