The work of archaeology uncovers fascinating vestiges of humanity’s past, greatly enriching our knowledge of our ancestors and ourselves. Over the last century, archaeologists have increasingly ventured underwater, making spellbinding finds and opening an incredible new frontier for archaeological discovery. In the 12 delightful and eye-opening lectures of Underwater Archaeology: Mysteries of the Deep, Professor Lemke, an expert underwater archaeologist working in the field, invites you to discover astonishing treasures of history that lie beneath the waves.

Humans have been on a remarkable journey these past 300,000 years. We started in Africa and slowly spread across the globe—crossing land bridges, sailing into the unknown, and eventually building cities and civilizations. While our primate cousins stayed where they evolved, we moved. Migration isn’t just something we did—it’s a defining trait of our species. Now, after covering the planet, we’re on the move again—not chasing new frontiers, but escaping rising seas, extreme heat, political instability, and economic stress.

In Forgotten America: Rediscovering Events that Changed the Nation, turn your attention to the unfamiliar in United States history with historian and author Dr. Rachel Michelle Gunter.

On Trial for Murder: America’s Most Famous Murder Trials takes you inside the courtrooms and uncovers the stories of 10 of the most well-known trials since the turn of the 20th century. For this riveting foray into criminal law, your guide is Professor Douglas O. Linder, the Elmer Powell Peer Professor of Law at the University of Missouri–Kansas City School of Law and creator of the Famous Trials website.

Many Americans remember a family road trip to visit one of our 63 national parks. Why did Americans start preserving these sites of natural and historic interest? How were these parks selected, and what steps did conservationists, activists, philanthropists, politicians, and others take to protect millions of acres against the booming developments of an expanding nation? An award-winning writer, researcher, and American Studies scholar, Dr. Megan Kate Nelson tackles these questions as she takes you on a marvelous journey through some of the most beautiful places on Earth.

What is it about Stoicism that Marcus found so important then, and that millions find relevant today? In the 12 fascinating lectures of Books That Matter: Meditations, professor Massimo Pigliucci explores the questions Marcus believed were crucial to address in a life of value, the answers he proposed, and the many ways in which you can use Stoic philosophy. While Meditations was originally written for an audience of just one, what Marcus wanted to examine certainly still applies to us today. What exactly should we be mindful of in this life?

From the 17th to 18th centuries, bold thinkers cast off the authority of ancient traditions and embraced reason as the primary tool for understanding the world. These rationalists, or early modern philosophers, included René Descartes, Baruch Spinoza, and Gottfried Wilhelm Leibniz—visionaries whose answers to profound questions remain relevant today. Early Modern Philosophy: Descartes and the Rationalists covers the key philosophers of this period in 12 fascinating half-hour lectures, presented by award-winning teacher James D. Reid, Professor of Philosophy at Metropolitan State University.

In Communism in Decline: From Sputnik to Gorbachev, Professor Vejas Gabriel Liulevicius reveals the internal and external forces that ripped apart the grand communist experiment. What were the mistakes made by the Soviet leaders who believed too deeply in their own propaganda? And why were they not able to see the many ironies in their own poor decisions? In 12 fascinating lectures, you will learn how the Soviet Union went from winning the space race against the United States in 1957 to Gorbachev’s resignation and the dissolution of the great experiment in 1991.

More than half a century after humans first walked on the Moon, exciting new space adventures are in the works. Thanks to major advances in rocketry, robotics, and other space technologies, humanity is on the verge of returning to the Moon, exploring Mars, building permanent orbiting space stations, expanding space tourism, and pushing the boundaries of exploration throughout the solar system and beyond. The Future of Space Exploration explores these exciting developments in 12 half-hour episodes, hosted by aerospace engineer and executive Dr. Ariel Ekblaw.

In the 12 fascinating and action-oriented lectures of Treating Anxiety, Dr. Ellen Hendriksen describes the causes and symptoms of numerous anxiety disorders—from generalized anxiety disorder to social anxiety to panic. In her calming manner, and always backed by rigorous scientific studies, she will give you numerous tools and exercises you can employ immediately to help treat your own anxiety. After all, few of us are in danger of being eaten by a bear these days and, as Dr. Henricksen points out, we don’t want to spend our lives hiding in the metaphorical cave.

Religion is foundational to what it means to be human. Our quest for meaning is as ancient as our very existence, stretching back to a time when Neanderthal burials and Paleolithic figurines suggest our ancestors recognized a power that transcended visible reality. From ancient civilizations to the 21st century, belief in a higher power seems to be a universal human instinct. These 12 thought-provoking lectures introduce you to the world of comparative religion, giving you insights into a variety of religious expressions and human cultures.

Though perhaps less well-known today than the great empires that surrounded them, the historic peoples of Central Asia—such as the Scythians, the Sogdians, the Xiongnu nomads of Mongolia, the Turkic peoples, and many others—produced cultures of major significance. In the 24 lectures of Crossroads of Civilization: A History of Central Asia, taught by Professor Eren Tasar, you will embark on a wide-ranging journey into the majestic landscapes, steppe and desert cultures, resplendent cities, and epic conquests that characterized this mysterious part of the world.

While it’s easy to get caught up - and, rightfully so - in the art of the Renaissance, you cannot have a full, rounded understanding of just how important these centuries were without digging beneath the surface, without investigating the period in terms of its politics, its spirituality, its philosophies, its economics, and its societies. Do just that with these 48 lectures that consider the European Renaissance from all sides, that disturb traditional understandings, that tip sacred cows, and that enlarges our understanding of how the Renaissance revolutionized the Western world.

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.

Delve into some of the most infamous, ghastly, and mysterious crimes of the last hundred-odd years in Crimes of the Century: A Selective History of Infamy. Taught by Professor Richard B. Spence of the University of Idaho, this enthralling course gives you a dozen case studies of murders most foul. From an intriguing Irish domestic murder to a world-shaking political assassination, this course gives you an inside look at some of the most heinous and maddeningly unknowable crimes in modern history.

The work of archaeology uncovers fascinating vestiges of humanity’s past, greatly enriching our knowledge of our ancestors and ourselves. Over the last century, archaeologists have increasingly ventured underwater, making spellbinding finds and opening an incredible new frontier for archaeological discovery. In the 12 delightful and eye-opening lectures of Underwater Archaeology: Mysteries of the Deep, Professor Lemke, an expert underwater archaeologist working in the field, invites you to discover astonishing treasures of history that lie beneath the waves.

More than half a century after humans first walked on the Moon, exciting new space adventures are in the works. Thanks to major advances in rocketry, robotics, and other space technologies, humanity is on the verge of returning to the Moon, exploring Mars, building permanent orbiting space stations, expanding space tourism, and pushing the boundaries of exploration throughout the solar system and beyond. The Future of Space Exploration explores these exciting developments in 12 half-hour episodes, hosted by aerospace engineer and executive Dr. Ariel Ekblaw.

Humans have been on a remarkable journey these past 300,000 years. We started in Africa and slowly spread across the globe—crossing land bridges, sailing into the unknown, and eventually building cities and civilizations. While our primate cousins stayed where they evolved, we moved. Migration isn’t just something we did—it’s a defining trait of our species. Now, after covering the planet, we’re on the move again—not chasing new frontiers, but escaping rising seas, extreme heat, political instability, and economic stress.

By exploring the stories of the Bible in their actual locations, and the stories of the complex human beings who lived them, you’ll gain fascinating and illuminating new dimensions of the texts. In this visually stunning course, you’ll also experience the Bible’s connection to both the real world and ancient history while you’ll engage with the past in a way that is both immediate and tangible.

In The Great Tours: Experiencing Medieval Europe, award-winning Professor Kenneth R. Bartlett of the University of Toronto invites you to travel through time to the golden ages of 12 of Europe’s most beautiful medieval cities. In 24 lectures, you’ll discover teeming markets and mercantile centers, royal feasts and ritual, dramatic military engagements, magnificent religious pageantry, and the many colorful layers of daily medieval life.

In Forgotten America: Rediscovering Events that Changed the Nation, turn your attention to the unfamiliar in United States history with historian and author Dr. Rachel Michelle Gunter.

What is it about Stoicism that Marcus found so important then, and that millions find relevant today? In the 12 fascinating lectures of Books That Matter: Meditations, professor Massimo Pigliucci explores the questions Marcus believed were crucial to address in a life of value, the answers he proposed, and the many ways in which you can use Stoic philosophy. While Meditations was originally written for an audience of just one, what Marcus wanted to examine certainly still applies to us today. What exactly should we be mindful of in this life?

On Trial for Murder: America’s Most Famous Murder Trials takes you inside the courtrooms and uncovers the stories of 10 of the most well-known trials since the turn of the 20th century. For this riveting foray into criminal law, your guide is Professor Douglas O. Linder, the Elmer Powell Peer Professor of Law at the University of Missouri–Kansas City School of Law and creator of the Famous Trials website.

Taught by acclaimed Professor Patrick Allitt, a British-born scholar who teaches at Emory University, these 36 splendid lectures give you an insider’s take on traveling through Great Britain. Whether you are planning a week-long vacation, a month-long grand tour, or just want to experience England, Scotland, and Wales from afar, this immersive course takes you on a voyage through not only the most popular tourist sites but also a trove of “hidden gems” overlooked by the traditional guidebooks.

Whether taken as a book of faith or a cultural artifact, the New Testament is among the most significant writings the world has ever known, its web of meaning relied upon by virtually every major writer in the last 2,000 years. Yet the New Testament is not only one of Western civilization’s most believed books, but also one of its most widely disputed, often maligned, and least clearly understood, with a vast number of people unaware of how it was written and transmitted.

Whether you’re buying a home, saving for retirement, running a business, or just plain speculating, it’s important to understand financial markets. These are the engines of commerce in today’s world, powering economic activity and steering the flow of capital. Taught by Professor Connel Fullenkamp of Duke University, Understanding the World of Financial Markets is aimed at the ordinary investor and surveys the impressive range of financial markets—from stocks and bonds to futures, options, real estate, private equity, and virtual assets.

The 24 revealing lectures of Unsung Heroes of the Ancient World reconstruct over a dozen biographies from the classical world—most of them little-known, some of them quite unlikely heroes. With Professor Emeritus Gregory Aldrete as your expert guide, you will meet the ambitious travel writers, dedicated engineers, careful cartographers, diligent farmers, woman philosophers, devoted wives, skilled military generals, African rebels, Persian kings, and impressive athletes who stood out among their peers centuries ago.

Imagine a world without bees, butterflies, and flowering plants. That was Earth 125 million years ago. Turn back the clock 400 million years, and there were no trees. At 450 million years in the past, even the earliest insects had not yet developed. And looking back 500 million years, the land was devoid of life, which at that time flourished in a profusion of strange forms in the oceans. These and other major turning points are the amazing story of evolution.

How have films like Ben-Hur, Spartacus, Gladiator, or even a satire like Monty Python’s Life of Brian created our popular perceptions of ancient Roman history? In what ways have they led us astray? And why, despite the occasional box-office flop, do movies set in ancient Rome still have the power to captivate us, and to turn each of us into theater-going history buffs? In these 12 lectures, an award-winning historian gives you a front-row look at the great movies that have shaped ancient Rome’s role in popular culture and memory.

In 10 riveting episodes that feel like a fast-paced thriller, acclaimed World War II historian Edward G. Lengel’s Generals and Geniuses: A History of the Manhattan Project brings the origin of the atomic bomb - and the scientific minds behind it - to vivid life. Did the Manhattan Project, and the remarkable weapon it produced, save millions of lives at the expense of the tens of thousands who died in Hiroshima and Nagasaki? And was there any way to prevent this technology from unleashing the horrors that still hang over us today?