Official Earth Day Website
All kinds of great info on green knitting.
How to Make Your Knitting Eco-Friendly

Green Knitting and Crocheting Using Non-Traditional Materials
Knit Green: 20 Projects and Ideas for Sustainability by Joanne Seiff
Looks like a wonderful book!
Start a Green Knitting Club at Work
Plastic Bag Crafts - Lots of creative things to do with plastic bags.
Instructions for cutting plastic bags & creating recycled plastic yarn (Plarn)
Tutorial: How to turn plastic grocery bags into a crocheted reusable bag
Video
The Re

Free Pattern (Photo)
Recycling Yarn
A how-to article
Recycled Container Portable Yarn Holders
A how-to article
Rag Knitting
A how-to article

33 Reusable Grocery Bags You Can Make: Free Patterns
All different methods, sewing, knitting, crocheting...
A Knitted Grocery Bag (Photo)
Free pattern
Until next time...Knit...Purl...Rat! (But use plarn!)