SustainaWiki is a wiki site designed with one thing in mind: offering information about sustainability to anyone who needs it! Don’t see a page you’re looking for? Make a username and create the page!
I had a quick look around SustainaWiki and it appears quite new with much of the content fairly limited and using 2012 references. So far there are pages addressing energy, food, home improvement, how-to guides, landscaping, technology, transportation, and waste management. If you’ve got some time and knowledge to share… well, you know what to do. If you need some guidance, you might want to check out the users guide.