The history of the Constitution is therefore a history of ideas that define our country and our national identity—and it’s a fascinating and revealing story. The US Constitution Through History gives you the opportunity to explore the story of this powerful document, as well as the way our interpretation of it has evolved. In 24 riveting lectures, Professor Eric Berger of the University of Nebraska takes you on a journey through America’s constitutional history. He takes you inside the minds of the Framers and unpacks the ideas that led to the break from England.

Thought experiments are “what if” scenarios that invite us to look carefully at how we think and view the world. They’ve been used throughout history by philosophers and other thinkers to explore our intuitions and ways of reasoning, to find solutions to problems, and to expand our knowledge of ourselves and the world. In these 24 eye-opening lectures, Professor Breyer takes you deeply into the historical tradition of thought experiments, shining a light on both the purpose and the outcomes of these compelling mental voyages.

Throughout the 24 lectures of Banned Books, Burned Books: Forbidden Literary Works, author and book critic Professor Maureen Corrigan of Georgetown University will take you on a tour of some of the most challenged and controversial works of literature, from the plays of Shakespeare to 21st-century best-sellers—even including the dictionary and classic fairy tales. You will trace the history, in the United States and Great Britain, of the challenges to books, the censoring of books, book bans, and even burnings.

The Middle Ages was a time of major historical shifts and transformations. This amazing era reverberates with discoveries, innovations, events, and historical processes that are integral to the world we know now. In these 24 enthralling lectures, Professor Salisbury leads you on a sumptuous tour of this incredible historical epoch, making clear that the remarkable historical currents and advances of the Middle Ages unfolded not only in the West, but across the globe, from Europe, Africa, and the Middle East to Asia, the Americas, and beyond.

Railways are one of the most important inventions in modern history. From the 1825 opening of the Stockton and Darlington Railway in England, trains revolutionized both travel and trade and radically changed the way we experience the world. In the 24 richly illustrated lectures of How Railways Transformed the World, you’ll experience the amazing world and impact of railways, from the early 19th century to today’s futuristic trains, including extensive material on the pleasure and appeal of rail travel today.

“Who are you?” Chances are you’d answer this question by describing the highlights of your personality and life experiences. But if you’d been asked this same question yesterday, you might have responded with a slightly different description. Does that mean you are a particular person today but were a different person yesterday? And what about tomorrow? Welcome to the slippery, shape-shifting nature of memory. As Professor Gabrielle Principe reveals, “you” are the conglomeration of the often-unreliable information your brain decides to feed you at any given moment.

Why are we scared of ghosts, zombies, vampires, demons, and monsters, when we know they are not real? Why do dark attics give us the creeps? How do writers and directors know exactly what anxieties to tap into, so that we break out in goosebumps, cover our eyes, and cringe? Shannon Scott invites you into the spooky, creepy, and sometimes surprising world of the horror genre to examine how popular scary movies and books manipulate our collective and individual fears—not only to frighten us, but also to address taboo subjects, and to reflect and comment on the state of our society.

From spirituality to politics and science, the occult has had an astonishing influence on the human experience across the centuries. It may surprise you to learn that everyday activities like attending church services or reading your daily horoscope all fit the broad definition of the occult. As you will see in the 24 illuminating episodes of Secrets of the Occult, the mystic and obscure are threaded through our ordinary lives in more ways than you may realize.

The glorious repertoire for solo piano includes many of classical music’s most beloved masterpieces. In these 24 musically rich lectures, you’ll dig deeply into this magnificent tradition, in an in-depth exploration of the art of listening. With Professor Kautsky’s inspired guidance and expert playing, you’ll highlight key works of each composer, and unpack their structure, the musical materials that drive them, and the specific features that affect listeners so strongly, giving you a clear grounding in how to approach and hear this great music.

Sleep neurologist Jennifer Molano explores many different aspects of sleep, helping you better understand common sleep issues and providing practical tips to improve sleep in your life. Over the course of six lectures, she will reveal what drives our sleep-wake cycle, what “healthy sleep” is, how our sleep cycles change over time, why sleep is important in regulating systems in our brains and bodies, and what symptoms may occur with sleep disturbances.