With the gift-giving season upon us, I have some extra copies of my books to offer. They include Air-Borne, Life’s Edge, and the new edition of my textbook, Evolution: Making Sense of Life. I’ll be happy to autograph them personally. Fill out this Google form, and I’ll send you an invoice from PayPal (shipping included). When I receive payment there, I’ll put the book in the mail to domestic US addresses. (No international orders, sorry.) If you encounter any trouble, contact me via my web site.