(Note: This program originally aired back in April.) We speak by phone with the noted performance poet, former middle-school teacher, and current teachers' advocate Taylor Mali. His new book --- "What Teachers Make: In Praise of the Greatest Job in the World" --- is based on a poem that he wrote several years ago, a spirited and encouraging defense of the teaching profession that has, by now, been seen and forwarded millions of times on Facebook, YouTube, Twitter, and elsewhere.