Community Environmental Legal Defense Fund (CELDF), which is an amazing organization that has, for example, helped Ecuador institute the rights of nature right into the fabric of their national constitution. In this series of four videos, Linzey gives a powerful speech describing the roots of our present-day problems. You might be surprised to hear what he has to say.
CELDF is also very active in Pennsylvania. They recently helped the City of Pittsburgh assert local rights against a state legal framework that left them with little authority to regulate hydraulic fracturing of natural gas. Well, with CELDF's help, Pittsburgh has banned fracking within city limits.