The Citizens Climate Lobby is an activist organization focused on national policies to address climate change. Its stated purposes are:

  1. to create the political will for a stable climate and,
  2. to empower individuals to have breakthroughs in exercising their personal and political power.

It has proven to be one of the most effective organizations fighting to address climate change. To get involved go to http://citizensclimatelobby.org/options-for-action/.