Polar Bear, Polar Bear, What Do You Hear?By: Bill Martin Jr. Illustrator: Eric Carle Series: Brown Bear and Friends Bill Martin Jr. and Eric Carle are two of the most respected names in children's education and children's illustrations. This collaboration, Polar Bear, Polar Bear, What Do You Hear?, their first since the classic Brown Bear, Brown Bear, What Do You See? (published decades ago and still a bestseller) shows two masters at their best. What will you hear when you read this book to