what is the biggest green non-profit ?



  1. 0 Votes

    The biggest green non-profit organization by far is Nature Conservancy. It has been around since 1951 and has more than 1 million members.

  2. 0 Votes

    Another very big green nonprofit is the Sierra Club. They have been around since 1892 and have 1.3 million members! They also have hard working, local chapters in each state focusing more on local action!

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