Permaculture.Org is one of the primary permaculture education websites. Here is the link. Here is an excerpt from the website materials:
Permaculture is an ecological design system for sustainability in all aspects of human endeavor. It teaches us how build natural homes, grow our own food, restore diminished landscapes and ecosystems, catch rainwater, build communities and much more.
This is a link to an interview with John McKnight posted on Philantrophy.com. You may have to register for free to access the material. http://philanthropy.com/article/Building-Grass-Roots-Movements/125654/
Peter Block and John McKnight are leading activists in the worldwide movement to empower communities to create our own future. They co-authored the book "The Abundant Community," and have created a website http://www.abundantcommunity.com . The site has a number of links to audio, video, and text materials by the authors, including blogs. Block and McKnight recently conducted a nationwide open phone conference that was well attended by people doing community work. Here is a link
Marion Nestle's blog has been promoted by WorldWatch. She is a Food / Nutrition expert. Here is a link to her website and an excerpt from the homepage [PS. Her Blog Feed has been added to our "Other Blog Feeds" materials]: