The Wildlife Conservation Society's George Schaller talks about his new book, "A Naturalist and Other Beasts," which covers his 50 years of documenting important large animal species in the field. And Scientific American editor in chief, John Rennie, offers a look at some articles in the June issue. Plus, we'll test your knowledge of some recent science in the news. Web sites mentioned on this episode include www.SciAm.com/daily, www.wcs.org