Jazz is a uniquely American art form, one of America's great contributions to not only musical culture, but world culture, with each generation of musicians applying new levels of creativity that take the music in unexpected directions that defy definition, category, and stagnation. Now you can learn the basics and history of this intoxicating genre in an eight-lecture series that is as free-flowing and original as the art form itself.

The Roman Republic is one of the most breathtaking civilizations in world history. Between roughly 500 BCE to the turn of the millennium, a modest city-state developed an innovative system of government and expanded into far-flung territories across Europe, Northern Africa, and the Middle East. This powerful civilization inspired America's founding fathers, gifted us a blueprint for amazing engineering innovations, left a vital trove of myths, and has inspired the human imagination for 2,000 years.

The 20th century was a hotbed of musical exploration, innovation, and transformation unlike any other epoch in history. Ranging across the century in its entirety, these 24 lectures present a musical cornucopia of astounding dimensions - a major presentation and exploration of the incredible brilliance and diversity of musical art across a turbulent century. Far more than simply a series of lectures, the program comprises a huge and many-sided resource for discovering the endless riches of 20th-century concert music across the globe.

"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.

In The Life & Times of Beethoven, celebrated composer and music historian Professor Robert Greenberg of San Francisco Performances gives you a unique perspective on a musical genius the likes of which the world had never seen before - or since. Blending biography, history, and music appreciation, these 10 lectures portray Beethoven’s extraordinary (and still modern-sounding) music as a direct outgrowth of his life, environment, and interior emotional landscape.