Cambridge City Council has voted unanimously to endorse the Plant Based Treaty, becoming the first city in Massachusetts and the sixth in the United States to support the international initiative focused on addressing emissions tied to the global food system. The policy order directs the City Manager to integrate plant-based food strategies into municipal sustainability planning, increase public education on plant-based diets, and collaborate with the School Department on food purchasing practices. Cambridge will also consider incorporating future calculations of consumption-based greenhouse gas emissions into its sustainability metrics.

The Plant Based Treaty campaign, modeled after the Fossil Fuel Non-Proliferation Treaty, seeks commitments to reduce reliance on animal agriculture in climate mitigation efforts. More than 4000 organizations and businesses have endorsed the treaty, including scientific experts and public figures. Residents and students in Cambridge have shown support for the initiative, emphasizing the importance of aligning local food policy with environmental goals and highlighting the health and environmental benefits of plant-based diets. Other US cities that have endorsed the treaty include Los Angeles, West Hollywood, Culver City, Hoboken, and Boynton Beach.