This cold weather has caused many of us to pull out our wool sweaters for extra warmth, and for this week’s Please Explain we’re talking about wool—and the process of gathering and using wool, from the sheep to the sweater! Clara Parkes, author of The Knitters Book of Wool: The Ultimate Guide to Understanding, Using, and Loving this Most Fabulous Fiber and The Knitter's Book of Yarn: The Ultimate Guide to Choosing, Using, and Enjoying Yarn, and Dr. Christopher Lupton, Professor, The Bill Sims Wool and Mohair Research Laboratory, Texas AgriLife Research and Extension Center, join us to discuss the subject.