UPDATE: THE CONTEST ENDED FEBRUARY 12, 2012. THANKS TO EVERYONE WHO PARTICIPATED, AND KEEP AN EYE OUT FOR OUR NEXT GIVEAWAY! We've teamed up with the University of Chicago Press to give away 10 copies of Relics: Travels in Nature's Time Machine, by Piotr Naskrecki; each winner will also receive one print of their choice from the hundreds in the book. To enter the giveaway, just leave a comment below, and be sure to include a viable email address (it won't show up on the page). The official rules are below. The contest ends at midnight, Sunday, February 12, 2012. In the meantime, here's a little about the book. Click on the image above to see a slideshow of these stunning images. On many nights in May and June, if you stand on the right beaches of America’s East Coast, you can travel back in time all the way to the Jurassic. For as you watch, thousands of horseshoe crabs will emerge from the foam and scuttle up the beach to their spawning grounds, as they’ve done, nearly...