Once again, we're here to help you with all your nerdy holiday shopping with our annual gift guide for science lovers. We brought in science librarian John Dupuis and Skepchick book club columnist Mary Brock who give us their top picks from 2015 that will make great additions to any nerd's library. And -- just to shake things up this year -- we spend the second half of the show with GeekWrapped's Simon Saval and Mad Art Lab's Courtney Caldwell, who give their recommendations for science-themed gifts you won't find in a library. And we'll speak to Skepchick founder Rebecca...