Third Act is a U.S.-based climate and democracy advocacy organization founded by environmentalist Bill McKibben. It mobilizes Americans over the age of 60 to take action on climate change, protect democracy, and promote environmental justice through grassroots organizing, public education, and advocacy.
Climate change mitigation, clean energy transition, fossil fuel divestment, environmental justice, and protection of democratic institutions and voting rights
Individual donations and philanthropic foundation grants
Founded by Bill McKibben; collaborates with environmental and climate advocacy groups such as 350.org and other grassroots climate coalitions
Non-profit organization
