Who invented zero? Why are there 60 seconds in a minute? Can a butterfly's wings really cause a storm on the far side of the world? In 50 concise essays, Professor Tony Crilly explains the mathematical concepts that allow use to understand and shape the world around us.

    Full color.

    Inspirational, inviting, and beautiful, it combines stunning images with entertaining and informative text that captures the essence of being there.

    Wendell Berry just as easily steps into Kentucky’s Red River Gorge and makes the observations of a poet as he does step away to view his subject with the keen, unflinching eye of an essayist. The inimitable voice of Wendell Berry—at once frank and lovely—is our guide as we explore this unique wilderness.Located in eastern Kentucky and home to 26,000 acres of untamed river, rock formations, historical sites, unusual vegetation and wildlife, the Gorge very nearly fell victim to a man-made lake thirty years ago. “No place is to be learned like a textbook,” Berry tells us, and so through revealing the Gorge’s corners and crevices, its ridges and rapids, his words not only implore us to know more but to venture there ourselves. Infused with his very personal perspective and enhanced by the startling photographs of Ralph Eugene Meatyard, The Unforeseen Wilderness draws the reader in to celebrate an extraordinary natural beauty and to better understand what threatens it.

      In the past few years, a handful of scientists have been in a race to explain a disturbing aspect of our universe: only 4 percent of it consists of the matter that makes up you, me, our books, and every planet, star, and galaxy. The rest—96 percent of the universe—is completely unknown.   Richard Panek tells the dramatic story of how scientists reached this conclusion, and what they’re doing to find this "dark" matter and an even more bizarre substance called dark energy. Based on in-depth, on-site reporting and hundreds of interviews—with everyone from Berkeley’s feisty Saul Perlmutter and Johns Hopkins’s meticulous Adam Riess to the quietly revolutionary Vera Rubin—the book offers an intimate portrait of the bitter rivalries and fruitful collaborations, the eureka moments and blind alleys, that have fueled their search, redefined science, and reinvented the universe.

    Twenty years on, Hancock returns with the sequel to his seminal work filled with completely new, scientific and archaeological evidence, which has only recently come to light...Near the end of the last Ice Age 12,800 years ago, a giant comet that had entered the solar system from deep space thousands of years earlier, broke into multiple fragments. Some of these struck the Earth causing a global cataclysm on a scale unseen since the extinction of the dinosaurs. At least eight of the fragments hit the North American ice cap, while further fragments hit the northern European ice cap. The impacts, from comet fragments a mile wide approaching at more than 60,000 miles an hour, generated huge amounts of heat which instantly liquidized millions of square kilometers of ice, destabilizing the Earth's crust and causing the global Deluge that is remembered in myths all around the world. A second series of impacts, equally devastating, causing further cataclysmic flooding, occurred 11,600 years ago, the exact date that Plato gives for the destruction and submergence of Atlantis.The evidence revealed in this book shows beyond reasonable doubt that an advanced civilization that flourished during the Ice Age was destroyed in the global cataclysms between 12,800 and 11,600 years ago. But there were survivors - known to later cultures by names such as 'the Sages', 'the Magicians', 'the Shining Ones', and 'the Mystery Teachers of Heaven'. They travelled the world in their great ships doing all in their power to keep the spark of civilization burning. They settled at key locations - Gobekli Tepe in Turkey, Baalbek in the Lebanon, Giza in Egypt, ancient Sumer, Mexico, Peru and across the Pacific where a huge pyramid has recently been discovered in Indonesia. Everywhere they went these 'Magicians of the Gods' brought with them the memory of a time when mankind had fallen out of harmony with the universe and paid a heavy price. A memory and a warning to the future...For the comet that wrought such destruction between 12,800 and 11,600 years may not be done with us yet. Astronomers believe that a 20-mile wide 'dark' fragment of the original giant comet remains hidden within its debris stream and threatens the Earth. An astronomical message encoded at Gobekli Tepe, and in the Sphinx and the pyramids of Egypt,warns that the 'Great Return' will occur in our time...

    The Living Forest, by award-winning photographer Robert Llewellyn, is a visual journey into this magical place. With fine-art photography that celebrate the small and the large, the living and the dead, and the seen and unseen, alongside lyrical essays by Joan Maloof, The Living Forest is an ideal blend of art and science that immerses you deep into the woods from the comfort of your home.

    It produced a cloud of roiling debris that blackened the sky for months as well as other geologic disasters--and triggered the demise of Tyrannosaurus rex. We know what happened largely because Walter Alvarez--synthesizing the findings of experts from a variety of scientific fields--has written a gripping story of the decades-long search for the cause of the dinosaurs' extinction. Painstakingly assembling clues from the Italian Apennines and the depths of the Pacific and presenting them with the excitement of a great novel, T. rex and the Crater of Doom is a book of undeniable importance and irresistible appeal by a major figure in contemporary science. " Engaging and witty. Read Alvarez for and excellent account of how scientists pose questions and seek to solve them." --Scientific American " First-rate...Alvarez provides the up-close tale of the comet or asteroid that wiped out the dinosaurs." --San Francisco Chronicle

    Here is a portrait of our lifelong love affair with bookstores that is at once heartfelt, bittersweet, and filled with good cheer.