Between 1861 and 1865, the clash of the greatest armies the Western hemisphere had ever seen turned small towns, little-known streams, and obscure meadows in the American countryside into names we will always remember. In those great battles, those streams ran red with blood-and the United States was truly born.

The Roman Empire: From Augustus to the Fall of Rome traces the breathtaking history from the empire’s foundation by Augustus to its Golden Age in the 2nd century CE through a series of ever-worsening crises until its ultimate disintegration. Taught by acclaimed Professor Gregory S. Aldrete of the University of Wisconsin-Green Bay, these 24 captivating lectures offer you the chance to experience this story like never before, incorporating the latest historical insights that challenge our previous notions of Rome’s decline.

In this 12-lecture meditation on Aristotle's Nicomachean Ethics, you'll uncover the clarity and ethical wisdom of one of humanity's greatest minds. Father Koterski shows how and why this great philosopher can help you deepen and improve your own thinking on questions of morality and leading the best life. The aim of these lectures is to provide you with a clear and thoughtful introduction to Aristotle as a moral philosopher.

Look beyond the abstract dates and figures, kings and queens, and battles and wars that make up so many historical accounts. Over the course of 48 richly detailed lectures, Professor Garland covers the breadth and depth of human history from the perspective of the so-called ordinary people, from its earliest beginnings through the Middle Ages.

Take a riveting tour of the Italian peninsula, from the glittering canals of Venice to the lavish papal apartments and ancient ruins of Rome. In these 24 lectures, Professor Bartlett traces the development of the Italian city-states of the Middle Ages and the Renaissance, showing how the modern nation of Italy was forged out of the rivalries, allegiances, and traditions of a vibrant and diverse people.

"It doesn't take an Einstein to understand modern physics," says Professor Wolfson at the outset of these 24 lectures on what may be the most important subjects in the universe: relativity and quantum physics. Both have reputations for complexity. But the basic ideas behind them are, in fact, simple and comprehensible by anyone. These dynamic and illuminating lectures begin with a brief overview of theories of physical reality starting with Aristotle and culminating in Newtonian or "classical" physics.

It was to be the war to end all wars, and it began at 11:15 on the morning of June 28, 1914, in an outpost of the Austro-Hungarian Empire called Sarajevo. It would officially end nearly five years later. Unofficially, however, it has never ended: Many of the horrors we live with today are rooted in the First World War. The Great War left millions of civilians and soldiers maimed or dead. It also saw the creation of new technologies of destruction: tanks, planes, and submarines; machine guns and field artillery; poison gas and chemical warfare.

On a summer day in 1914, a nineteen-year-old Serbian nationalist gunned down Archduke Franz Ferdinand in Sarajevo. While the world slumbered, monumental forces were shaken. In less than a month, a combination of ambition, deceit, fear, jealousy, missed opportunities, and miscalculation sent Austro-Hungarian troops marching into Serbia, German troops streaming toward Paris, and a vast Russian army into war, with England as its ally. As crowds cheered their armies on, no one could guess what lay ahead in the First World War.

We humans are the inheritors of a dynasty that has reigned over the planet for nearly 66 million years, through fiery cataclysm and ice ages: the mammals. Our lineage includes saber-toothed tigers, woolly mammoths, armadillos the size of a car, cave bears three times the weight of a grizzly, clever scurriers that outlasted Tyrannosaurus rex, and even other types of humans, like Neanderthals.

In The Pagan World: Ancient Religions Before Christianity, you will meet the fascinating, ancient polytheistic peoples of the Mediterranean and beyond, their many gods and goddesses, and their public and private worship practices, as you come to appreciate the foundational role religion played in their lives. Professor Hans-Friedrich Mueller, of Union College in Schenectady, New York, makes this ancient world come alive in 24 lectures with captivating stories of intrigue, artifacts, illustrations, and detailed descriptions from primary sources of intriguing personalities.