In it, we follow them from sixth-century Alexandria to ninth-century Baghdad, from Muslim Cordoba to Catholic Toledo, from Salerno’s medieval medical school to Palermo, capital of Sicily’s vibrant mix of cultures and – finally – to Venice, where that great merchant city’s printing presses would enable Euclid’s geometry, Ptolemy’s system of the stars and Galen’s vast body of writings on medicine to spread even more widely. In tracing these fragile strands of knowledge from century to century, from east to west and north to south, Moller also reveals the web of connections between the Islamic world and Christendom, connections that would both preserve and transform astronomy, mathematics and medicine from the early Middle Ages to the Renaissance. Vividly told and with a dazzling cast of characters, The Map of Knowledge is an evocative, nuanced and vibrant account of our common intellectual heritage.

    More than 2,500 years later, the issues they pondered continue to challenge, fascinate, and instruct us. Is reality stable and permanent or is it always changing? Are ethical values like justice and courage relative? Or are values "absolute"—simply and forever right and true? What is justice? What is happiness? How shall we best live our lives?An Introduction to Greek Philosophy beckons you to join this eternal discussion. For that is what this subject truly is: a conversation among thinkers that has continued through the centuries and remains accessible to us today. You find it constantly stimulating, sometimes controversial, and nearly always remarkably relevant.A Hunger for Reasons, not Myths or BeliefsProfessor David Roochnik has organized this series of 24 lectures as a "dialectical" approach (the word comes from the Greek dialegesthai: to converse). The philosophers are presented as if they were participating in a conversation. In this way, the course unfolds in a manner similar to the actual development of Greek philosophy.In this course, you study the development of Greek philosophy, meet its major thinkers, and explore the issues and ideas that concerned them. For example the first real philosophers were the Presocratics—literally, the philosophers who lived before Socrates. They included Thales of Miletus (585 B.C.E.–?), Anaximander (610–546), Anaximenes (approx. 550), Xenophanes (approx. 570) and Pythagoras (approx. 570–500).The Presocratics rejected myth and divine inspiration—such as had been embodied in the works of Homer and in Hesiod's creation story, the Theogony—as valid explanations of reality. Instead, they insisted that true understanding always requires a logos, a rational explanation (hence such English words as "psychology" and "biology").The Presocratics were concerned with issues such as identifying the arche or "Being": the thing that is the origin of all other things. They also introduced sophistic relativism, the notion that truth, goodness, and all other values were relative, depending entirely on the person or group that held them. This concept would become a major point of debate for the Greeks and for the ages.Are We Footnotes to Plato?The heroes of this course, and certainly of Greek philosophy, are Plato (429–347 B.C.E.) and his student, Aristotle (384–322 B.C.E.). Unlike the Presocratics, who wrote too little, Plato and Aristotle were prolific authors. Both argued against relativism and instead were staunch objectivists who believed that certain important values were absolutely and universally true. And both left a staggering mark on history.Alfred North Whitehead, the great 20th-century British philosopher, said, "The safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato." In the Middle Ages, Aristotle was held in such high esteem that he was simply known as "the philosopher."Among Plato's many contributions to philosophy is his ingenious device for the examination of ideas: his written dialogues. In them, Plato never uses his own voice. Instead, the dialogues take place among a changing cast of characters, and Socrates is the most notable among them. The effect is to invite us to take part in the conversation and, ultimately, to become philosophers.You study Plato's dialogues as well as his notion of the Forms. This was his response to relativism and proposed that every virtue and value has an absolute and perfect Form, which humans understand even before birth.Greek philosophy can be said to culminate with Aristotle, who wrote treatises on a breathtaking range of subjects. He is said to be the first to view knowledge as being divided into specific disciplines such as biology or astronomy. The university was later modeled on this approach. More than any other philosopher, Aristotle synthesized the views that preceded him.For Aristotle, one value was foremost and was contained in everything, from the tiniest organisms to the phenomena of fire to human beings: purpose. Everything has a purpose that can be recognized and objectively defined, and that gives meaning to life. You explore the details and rationale of Aristotle's teleological—or purposive—world-view, one of the most significant in history.An Invitation to ThinkIn this course, you not only learn about Greek philosophy but, to some extent, how to do it. Professor Roochnik emphasizes that Greek philosophy is ultimately not about facts or answers but about the give-and-take of ideas.By the end of these lectures, you will understand how Greek philosophy still heavily influences our view of life. We live today, Professor Roochnik maintains, at a time that is shaped by Presocratic, relativistic philosophy. Contemporary thinkers, and often the average person, have great difficulty finding objective truth or meaning in life.What have we lost in turning away from the world of Plato and Aristotle—a world where everything has a place and a purpose and life is saturated with value and meaning?On the other hand, what would we lose if we returned to that world?These are a few of the many questions that will give you ample food for thought. For the Greeks, that was the greatest feast of all.

    The celebrated Macedonian king has been one of the most enduring figures in history. He was a general of such skill and renown that for two thousand years other great leaders studied his strategy and tactics, from Hannibal to Napoleon, with countless more in between. He flashed across the sky of history like a comet, glowing brightly and burning out quickly: crowned at age nineteen, dead by thirty-two. He established the greatest empire of the ancient world; Greek coins and statues are found as far east as Afghanistan. Our interest in him has never faded. Alexander was born into the royal family of Macedonia, the kingdom that would soon rule over Greece. Tutored as a boy by Aristotle, Alexander had an inquisitive mind that would serve him well when he faced formidable obstacles during his military campaigns. Shortly after taking command of the army, he launched an invasion of the Persian empire, and continued his conquests as far south as the deserts of Egypt and as far east as the mountains of present-day Pakistan and the plains of India. Alexander spent nearly all his adult life away from his homeland, and he and his men helped spread the Greek language throughout western Asia, where it would become the lingua franca of the ancient world. Within a short time after Alexander’s death in Baghdad, his empire began to fracture. Best known among his successors are the Ptolemies of Egypt, whose empire lasted until Cleopatra. In his lively and authoritative biography of Alexander, classical scholar and historian Philip Freeman describes Alexander’s astonishing achievements and provides insight into the mercurial character of the great conqueror. Alexander could be petty and magnanimous, cruel and merciful, impulsive and farsighted. Above all, he was ferociously, intensely competitive and could not tolerate losing—which he rarely did. As Freeman explains, without Alexander, the influence of Greece on the ancient world would surely not have been as great as it was, even if his motivation was not to spread Greek culture for beneficial purposes but instead to unify his empire. Only a handful of people have influenced history as Alexander did, which is why he continues to fascinate us.

    Our Inheritance 2. Mendel and Genes 3. Genes and Chromosomes 4. The Search for the GeneDNA 5. DNA Structure and Replication 6. DNA Expression in Proteins 7. Genes, Enzymes, and Metabolism 8. From DNA to Protein 9. Genomes 10. Manipulating GenesRecombinant DNA 11. Isolating Genes and DNA 12. BiotechnologyGenetic Engineering 13. Biotechnology and the Environment 14. Manipulating DNA by PCR and Other Methods 15. DNA in IdentificationForensics 16. DNA and Evolution 17. DNA and Human Evolution 18. Molecular MedicineGenetic Screening 19. Molecular MedicineThe Immune System 20. Molecular MedicineCancer 21. Molecular MedicineGene Therapy 22. Molecular MedicineCloning and Stem Cells 23. Genetics and Agriculture 24. Biotechnology and Agriculture

    Discovered in a pile of rubble in 1799, this slab of stone proved to be the key to unlocking a lost language that baffled scholars for centuries. Carved in ancient Egypt, the Rosetta Stone carried the same message in different languages—in Greek using Greek letters, and in Egyptian using picture-writing called hieroglyphs. Until its discovery, no one in the world knew how to read the hieroglyphs that covered every temple and text and statue in Egypt. Dominating the world for thirty centuries, ancient Egypt was the mightiest empire the world had ever known, yet everything about it—the pyramids, mummies, the Sphinx—was shrouded in mystery. Whoever was able to decipher the Rosetta Stone would solve that mystery and fling open a door that had been locked for two thousand years. Two brilliant rivals set out to win that prize. One was English, the other French, at a time when England and France were enemies and the world’s two great superpowers. Written “like a thriller” (Star Tribune, Minneapolis), The Writing of the Gods chronicles this high-stakes intellectual race in which the winner would win glory for both himself and his nation. A riveting portrait of empires both ancient and modern, this is an unparalleled look at the culture and history of ancient Egypt, “and also a lesson…in what the human mind does when faced with a puzzle” (The New Yorker).

    Whether it's something as minor as a brush with the common cold or as serious as Ebola, we all have grappled with infections and will continue to encounter them as we age.On a worldwide scale, infectious diseases account for 26 percent of all deaths, second only to cardiovascular diseases. And unlike chronic diseases, infectious diseases are unique in their potential for explosive global impacts.Now, in the 24 engaging lectures of Introduction to Infectious Diseases, you can get a comprehensive overview of diseases from the mundane to the fatal from renowned physician and award-winning professor Dr. Barry Fox.Begin with an overview of the microscopic particles responsible for disease: bacteria, fungi, hybrid germs, and viruses. You will see how they invade the body; look through the microscope at pathogens to identify their inner components; follow germs through to different body systems and see what effects they have; and learn why we may be losing the battle against some germs.

    Ranging from 700,000 BC to 311 AD, this volume portrays the emergence and development of Egypt from its prehistoric roots to its conquest by the Roman Empire. The contributors--all leading scholars working at the cutting edge of Egyptology--incorporate the latest findings in archaeological research as they chart the principal political events of Egyptian history, from the rise of the Pharaohs and the conquest of Egypt by Alexander the Great, to the ascension of the Ptolemies and the coming of Roman legions. The book also includes the first detailed examinations of three periods which were previously regarded as dark ages. Against the backdrop of the birth and death of ruling dynasties, the writers also examine cultural and social patterns, including stylistic developments in art and literature, monumental architecture, funerary beliefs, and much more. The contributors illuminate the underlying patterns of social and political change and describe the changing face of ancient Egypt, from the biographical details of individuals to the social and economic factors that shaped the lives of the people as a whole. The only up-to-date, single-volume history of ancient Egypt available in English, The Oxford History of Ancient Egypt is a must read for everyone interested in one of the great civilizations of antiquity.

    While we’re predisposed to look on death with fear and sadness, it’s only by confronting and exploring death head-on that we can actually embrace the important role it plays in our lives. Death, it turns out, is a powerful teacher, one that can help us think responsibly and deeply about the meaning and value of life, connect with the beliefs and traditions of cultures and faiths different from our own, and gain the wisdom and guidance to live a richer, more fulfilling life while we have it.As religion scholar and award-winning Professor Mark Berkson of Hamline University says, “Reflecting on death and dying is an essential part of the examined life.” Take a wide-ranging look at this undeniably confounding and fascinating subject. Bringing together theology, philosophy, biology, anthropology, literature, psychology, sociology, and other fields, these 24 lectures are a brilliant compendium of how human beings have struggled to come to terms with mortality. You’ll encounter everything from ancient burial practices, traditional views of the afterlife, and the five stages of grief to the question of killing during wartime, the phenomenon of near-death experiences, and even 21st-century theories about transcending death itself. Prepare for a remarkable learning experience that brings you face-to-face with the most important topic mortals like us can consider.

    But who were the early speakers of this ancient mother tongue, and how did they manage to spread it around the globe? Until now their identity has remained a tantalizing mystery to linguists, archaeologists, and even Nazis seeking the roots of the Aryan race. The Horse, the Wheel, and Language lifts the veil that has long shrouded these original Indo-European speakers, and reveals how their domestication of horses and use of the wheel spread language and transformed civilization.Linking prehistoric archaeological remains with the development of language, David Anthony identifies the prehistoric peoples of central Eurasia's steppe grasslands as the original speakers of Proto-Indo-European, and shows how their innovative use of the ox wagon, horseback riding, and the warrior's chariot turned the Eurasian steppes into a thriving transcontinental corridor of communication, commerce, and cultural exchange. He explains how they spread their traditions and gave rise to important advances in copper mining, warfare, and patron-client political institutions, thereby ushering in an era of vibrant social change. Anthony also describes his fascinating discovery of how the wear from bits on ancient horse teeth reveals the origins of horseback riding.The Horse, the Wheel, and Language solves a puzzle that has vexed scholars for two centuries--the source of the Indo-European languages and English--and recovers a magnificent and influential civilization from the past.

    From the macro to the molecular, this course takes a science-based view to debunk common weight-loss misconceptions and help you understand your own body better than you ever have.Led by Professor Michael Ormsbee, Assistant Professor and Interim Director of the Institute of Sports Sciences and Medicine, you will gain access to cutting-edge research that demonstrates what does - and doesn’t - work. The lessons presented in this course can change your life by helping you to feel better, perform better, and be healthier now and into your older years.Listening Length: 12 hours and 59 minutes (approximately equivalent to 350 page book)

    Yet it is also one of the most puzzling, with an intriguing and sometimes violent history, from the sixth century BCE to the present day. Destroyed by Vesuvius in 79 CE, the ruins of Pompeii offer the best evidence we have of life in the Roman Empire. But the eruptions are only part of the story. In The Fires of Vesuvius, acclaimed historian Mary Beard makes sense of the remains. She explores what kind of town it was--more like Calcutta or the Costa del Sol?--and what it can tell us about ordinary life there. From sex to politics, food to religion, slavery to literacy, Beard offers us the big picture even as she takes us close enough to the past to smell the bad breath and see the intestinal tapeworms of the inhabitants of the lost city. She resurrects the Temple of Isis as a testament to ancient multiculturalism. At the Suburban Baths we go from communal bathing to hygiene to erotica. Recently, Pompeii has been a focus of pleasure and loss: from Pink Floyd's memorable rock concert to Primo Levi's elegy on the victims. But Pompeii still does not give up its secrets quite as easily as it may seem. This book shows us how much more and less there is to Pompeii than a city frozen in time as it went about its business on 24 August 79.

    The issues Professor Dalton addresses in these lectures - and in Western political theory generally - fall into three sets of fundamental questions you'll get to unpack. The first set involves the essential characteristics of human nature and the good society. The second focuses on the intricate relationship between the individual and society. And the final set of questions involves theories about change.Through these lectures and their historical case studies, you'll be able to identify the fundamental questions and concerns that shape classical and modern political theory:Describe the influence of one's understanding of human nature upon one's vision of the good society.Compare and contrast the views of theorists regarding the purpose of the state, the relationship between politics and ethics, and the qualifications for exercising political power.Discuss views of leading political theorists regarding the meaning of freedom, the sources of legitimate political authority, and the obligations of individuals to the state or society, and more.

    Mann radically alters our understanding of the Americas before the arrival of Columbus in 1492.Contrary to what so many Americans learn in school, the pre-Columbian Indians were not sparsely settled in a pristine wilderness; rather, there were huge numbers of Indians who actively molded and influenced the land around them. The astonishing Aztec capital of Tenochtitlan had running water and immaculately clean streets, and was larger than any contemporary European city. Mexican cultures created corn in a specialized breeding process that it has been called man’s first feat of genetic engineering. Indeed, Indians were not living lightly on the land but were landscaping and manipulating their world in ways that we are only now beginning to understand. Challenging and surprising, this a transformative new look at a rich and fascinating world we only thought we knew.

    For two and half thousand years the Celts have continued to fascinate all who have come into contact with them. THE ANCIENT CELTS presents an absorbing account of the tribes whose origins and identity still provoke heated debate. Exploring the archaeological reality of the Iron Age inhabitants of barbarian Europe, Professor Cunliffe traces the emergence of chiefdoms,patterns of expansion and migration, and the development of Celtic ethnicity and identity.

    It's not just a list of "superfoods" or trendy exercises; the course takes a rigorous scientific approach to human vitality. Energy is a limited resource; learn to allocate yours in the best way possible to make the most of each day.