350org

350.org is an international environmental organization focused on climate change advocacy and grassroots activism. It was founded in 2008 by author Bill McKibben and a group of organizers, and is named after the atmospheric carbon dioxide concentration of 350 parts per million, which scientists have identified as a safe upper limit for humanity.

Operating as a nonprofit with a global network, 350.org coordinates campaigns through online mobilization and local groups in many countries. Its work includes public awareness campaigns, grassroots organizing, and efforts to reduce dependence on fossil fuels, promote renewable energy, and press governments and businesses to cut emissions. A central tactic has been mobilizing large-scale public actions and online petitions tied to global or national events.

Among its notable campaigns are the Fossil Free campaign promoting divestment from fossil fuel companies by universities, religious groups, foundations, and municipalities; and the Global Day of Climate Action in 2009, as well as the 10/10/10 global action in 2010. The organization also supports policy advocacy and works with civil society partners to influence climate negotiations and energy policy.

Leadership and funding: Executive Director May Boeve; the organization is guided by a board and supported by donations, grants, and partnerships. It maintains a presence through regional offices and volunteers around the world. 350.org is widely recognized as a leading voice in climate activism and a catalyst for international grassroots campaigns.