The Eco-spirituality and Action Minute (also known as the Peace with Earth declaration) 

A Basic Call to Consciousness: The Hau de no sau nee Address to the Western World, Geneva, Switzerland, Autumn, 1977

Calculate your Carbon Footprint (and learn about carbon offsets)

Quaker Earthcare Witness

Earth Witness Journal: The Blog of Quaker Environmentalist Marshall Massey

Earth Quaker Action Team (EQAT) Building a just and sustainable economy through nonviolent direct action 

Genesis Farm

WiserEarth- The Social Network for Sustainability

Climate Crisis Coalition including the free CCC Newsfeed that can be delivered to you weekly via email. Highly informative and recommended.