Book excerpt: The fiber world is all abuzz about sustainable yarns and alternative materials, and AwareKnits jumps on this trend with a socially conscious approach to knitting and crochet. Knitting superstar Vicikie Howell and activist-knitter Adrienne Armstrong present a groundbreaking volume that’s part pattern book and part crafty call to action. They offer 31 stylish projects that use a variety of "green” yarns, including ones from soy, corn, and hemp.