Greene, who recently launched World Science U, which offers free online science courses, explains what it is that's so "elegant" about string theory while lamenting the possible limits of what dogs (and by implication humans) can ever hope to understand about the universe. The interview was conducted by Rivka Galchen, an acclaimed fiction writer and journalist, named by The New Yorker as one of 20 Writers Under 40. Cover design by Adil Dara Kim.

    After World War II, it reshaped the global order-whoever could master uranium could master the world. Marie Curie gave us hope that uranium would be a miracle panacea, but the Manhattan Project gave us reason to believe that civilization would end with apocalypse. Slave labor camps in Africa and Eastern Europe were built around mine shafts and America would knowingly send more than six hundred uranium miners to their graves in the name of national security. Fortunes have been made from this yellow dirt; massive energy grids have been run from it. Fear of it panicked the American people into supporting a questionable war with Iraq and its specter threatens to create another conflict in Iran. Now, some are hoping it can help avoid a global warming catastrophe. In "Uranium," Tom Zoellner takes readers around the globe in this intriguing look at the mineral that can sustain life or destroy it.

    Eliot Porter's photographs of the natural world, spanning thirty-five years and five continents -- from an Antarctic ice floe to an American desert to an Icelandic lava field -- reveal in mesmerizing ways what scientists are beginning to see for themselves: the patterns, relations, and interactions present in nature's disorder and wildness. This is the perfect marriage of image and text -- brilliant full-color photographs by the preeminent nature photographer of his generation together with an illuminating essay by the widely praised author of Chaos.

    And unlike dogs, cats offer humans no practical benefit. The truth is they are sadly incompetent mouse-catchers and now pose a threat to many ecosystems. Yet, we love them still.Content:Catacombs Cat's cradle What's the catch? The cats that ate the canaries The cat lobby CAT scan Pandora's litter box Lions and toygers and lykoi Nine likes.

    The Milky Way alone encompasses 30 trillion potential home planets. Scientists Trefil and Summers bring readers on a marvelous experimental voyage through the possibilities of life--unlike anything we have experienced so far--that could exist on planets outside our own solar system.Life could be out there in many forms: on frozen worlds, living in liquid oceans beneath ice and communicating (and even battling) with bubbles; on super-dense planets, where they would have evolved body types capable of dealing with extreme gravity; on tidally locked planets with one side turned eternally toward a star; and even on "rogue worlds," which have no star at all. Yet this is no fictional flight of fancy: the authors take what we know about exoplanets and life on our own world and use that data to hypothesize about how, where, and which sorts of life might develop. Imagined Life is a must-have for anyone wanting to learn how the realities of our universe may turn out to be far stranger than fiction.

    Presenting details about the parts of the skull (including the cranium, the mandible, the shape and positioning of the eye sockets, and species-specific features like horns, teeth, beaks and bills), information about the science and pseudoscience of skulls, and a look at skulls in religion, art and popular culture, his stories and information are riveting and enlightening.At the center of "Skulls" is a stunning, never-before-seen-in-any-capacity, visual array of the skulls of more than 300 animals that walk, swim, and fly. The skulls are from the collection of Alan Dudley, a British collector and owner of what is probably the largest and most complete private collection of skulls in the world. Every skull is beautifully photographed to show several angles and to give the reader the most intimate view possible. Each includes a short explanatory paragraph and a data box with information on the animal's taxonomy, behavior, and diet."Skulls "was published in December 2011 as an e-book for the iPad by the innovative e-book publishers Touch Press, creators of the best-selling e-books for iPad "The Elements" and "Solar System." Both books were also published in print by Black Dog & Leventhal.