Prof. Peter Klopfer and his daughter Erika Honoré have published a book for children about evolution.  "Darwin and the First Grandfather" tells how young Tim becomes curious after seeing some family photos.  Did his grandfather have a grandfather?  What about his grandfather's grandfather's grandfather?  His mother tells him no one knows for sure how people came to be, but Darwin had a theory. . . .  The book is illustrated by Gretchen Morrissey.