By Megan Goodacre
Not that long ago, knitters were mostly limited to wool and acrylic. The yarn industry now provides a wide range of fibers, from the highly exotic to the highly synthetic. While the variety is wonderful, it can also be frustrating to separate meaningful information from hype. Here are most of the yarn fibers that you'll find, on their own or blended. Except for Wool, the list is sorted alphabetically.