How do you measure the size of the planet you're standing on? "Circumference" is the story of what happened when one man asked himself that very question. Nicholas Nicastro brings to life one of history's greatest experiments when an ancient Greek named Eratosthenes first accurately determined the distance around the spherical earth. In this fascinating narrative history, Nicastro takes a look at a deceptively simple but stunning achievement made by one man, millennia ago, with only the simplest of materials at his disposal. How was he able to measure the land at a time when distance was more a matter of a shrug and a guess at the time spent on a donkey's back? How could he be so confident in the assumptions that underlay his calculations: that the earth was round and the sun so far away that its rays struck the ground in parallel lines? Was it luck or pure scientific genius? Nicastro brings readers on a trip into a long-vanished world that prefigured modernity in many ways, where neither Eratosthenes' reputation, nor the validity of his method, nor his leadership of the Great Library of Alexandria were enough to convince all his contemporaries about the dimensions of the earth. Eratosthenes' results were debated for centuries until he was ultimately vindicated almost 2000 years later, during the great voyages of exploration. "Circumference" is a compelling scientific detective story that transports readers back to a time when humans had no idea how big their world was--and the fate of a man who dared to measure the incomprehensible.

BOOK 4 IN THE ICONIC ANCIENT EGYPTIAN SERIES, BY THE MASTER OF ADVENTURE, WILBUR SMITH 'Best historical novelist' - Stephen King 'A master storyteller' - Sunday Times 'Wilbur Smith is one of those benchmarks against whom others are compared' - The Times 'No one does adventure quite like Smith' - Daily Mirror AN ENEMY UNLIKE ANY OTHER THE GREAT KINGDOM OF EGYPT ON THE BRINK OF RUIN CAN THE ANCIENT MAGE TAITA SAVE HIS HOMELAND, BEFORE IT'S TOO LATE? Renowned magus Taita is now over a hundred years old and has ascended to a new level of wisdom and understanding about his world. But he must prepare himself for the biggest threat Egypt has ever faced: the great plagues and the failure of the Nile. Taita must find the cause before Egypt is ruined, but he has no idea of the terrible enemy that awaits him: the fire witch Eos, an ancient force of sheer evil. Taita must risk his soul to battle her, or his homeland and everything he has ever loved will be lost forever. But there are other reasons for Taita to fight - since success could also mean rewards he could never have thought possible . . . Book 4 in the Ancient Egyptian series from the master historical adventure writer, Wilbur Smith. Book 4 in the series, Desert God, is available now. And don't miss Wilbur Smith's return to Egypt in The New Kingdom sequence: The New Kingdom Titans of War Testament All available now.

Evelyn Underhill was a pioneer in revitalizing interest in mysticism and in the spiritual life as lived by ordinary people. Here are some of her articles that demonstrate the variety and development of her thought over forty years. The themes of magic and mysticism, prayer and pacifism are all considered, with particular emphasis on Underhill's focus on personal religious experience, its nurturance in prayer, its protection by institutional religion, and its implications for all aspects of life. Together, the pieces illuminate the author's move from Platonism to the incarnational spirituality lived out during the years between the world wars. Greene's interpretive introduction to the life and work of this contemporary mystic is most helpful for those previously unfamiliar with Underhill. The book contains the most complete bibliography available on works by and about this important woman.

"This volume accompanies an exhibition of the same name, which includes artefacts from nearly 2000 years before the Christian era. Objects such as coffins, tombs, masks, jewellery, papyri, sarcophagi and monumental and small-scale sculpture reveal the reverence and awe with which the Egyptians considered the mystery of death. The essays in this book explore Egyptian art history, customs and worship, with specific focus on the Amduat, a book devoted to the pharaoh's 12-hour journey to the afterlife. Additional writings detail the background of the collection and focus upon the role of art in ancient Egypt."--Amazon.

The story of one paleontologist's fossil digs in Africa, and his unexpected findings Winner of the Colbert Award for the best adult book about dinosaurs Winner of the Colbert Award for the best adult book about dinosaurs Louis Jacobs reopened paleontologists' eyes to the African continent when he uncovered a major fossil site in the hills of Malawi in the 1980s. During five digging seasons in Malawi and three in Cameroon, Jacobs found the remains of two meat-eating theropods, two herbivorous sauropods, an odd crocodile about the size of a Chihuahua, and rare early mammals. Now in paperback, Quest for the African Dinosaurs includes Jacobs' new introduction, which discusses recent developments in paleontological research in Africa.

"Rick Anthony Furtak's Wisdom in Love is a subtle and fascinating study of emotional rightness. Focusing on Kierkegaard's debt to and critique of ancient Stoic ideas of falsity in emotion, Furtak brings to the topic a flexible philosophical mind and a set of fresh and surprising insights. His scholarship will satisfy specialists, but his impressive literary style makes the book open to any reader who wants to reflect about the topic." --Martha Nussbaum, University of Chicago "In Wisdom in Love, Rick Anthony Furtak gives us a persuasive defense of love and deep concern, and shows how these lead toward a religious conception of emotion and value. Love and its companion emotions are placed within a picture of what is worthy, a view that makes sense of our perceptions of significance despite the pull of slants that see the world as devoid of anything that matters. It is a timely, important, and original contribution to moral philosophy." --Edward Mooney, Syracuse University "Furtak's voice in this book is extraordinary, for it combines the authentic presence of a human being searching for understanding, the rigorous enquiry of a philosopher investigating emotion and knowledge, and the lyrical sensitivity of a poet engaged in bringing experiences to light. It is a book brimming with wisdom and love." --John Hanwell Riker, author of Ethics and the Discovery of the Unconscious "This book will find an important place both in Kierkegaard scholarship and in a wider philosophical context. Furtak has read Kierkegaard extensively and well." --Alastair Hannay, University of Oslo In this historically informed work in moral psychology, Rick Anthony Furtak develops a conceptual account of the emotions that addresses the conventional idea that reason and emotion stand in sharp opposition. Furtak begins with a critical examination of the ancient Stoic position that emotions ought to be avoided by rational human beings. He argues that, on the contrary, emotions ought to be understood as embodying a kind of authentic insight, which enables us to attain a meaningful and truthful way of seeing the world. Furtak's positive alternative to Stoicism draws heavily on the writings of S�ren Kierkegaard, particularly Either/Or and Works of Love, while also engaging with a wide range of other relevant philosophical, literary, and religious sources. He argues that a morality of virtue and narrative awareness is necessary for accurate emotional perception, and then attempts to define a qualified value realism based upon a reverential trust in love as the ground of human life. The outcome of this inquiry into the possibility of reliable emotion is an account of the ideal state in which we could trust ourselves to be rational in being passionate. Rick Anthony Furtak is associate professor of philosophy at Colorado College.