Epigenetics is the science of living DNA, charting the chemical pathways that spur DNA into action by turning genes on and off. While the Human Genome Project of the early 2000s was hailed as the key to understanding human heredity and disease, that historic effort was just the beginning. It has taken epigenetics to fill in the picture, explaining how the fixed code of our genome is implemented in countless living processes.

Economic forces are everywhere around you. But that doesn't mean you need to passively accept whatever outcome those forces might press upon you. Instead, with these 12 fast-moving and crystal clear lectures, you can learn how to use a small handful of basic nuts-and-bolts principles to turn those same forces to your own advantage.

Taught by award-winning Professor Patrick Grim of the State University of New York at Stony Brook, The Philosopher’s Toolkit: How to Be the Most Rational Person in Any Room arms you against the perils of bad thinking and supplies you with an arsenal of strategies to help you be more creative, logical, inventive, realistic, and rational in all aspects of your daily life.

The Spanish Civil War was a local conflict on the margins of Europe—a short yet bloody series of battles in a lull between the great World Wars—but the conflict was a microcosm of war in the 20th century. Not only did the Spanish Civil War foreshadow the global conflagration to come, but it also had its roots in the modern era’s central divides: urban versus rural, religion versus secularization, rich versus poor, progress versus tradition, democracy versus fascism and communism.

In a field known for startling ideas, the Many-Worlds Interpretation (MWI) of quantum mechanics may take the prize. It holds that parallel to our own world are a large number of other universes, almost identical to ours but with small variations. Copies of each of us inhabit a myriad of these worlds. But they are not us exactly; they share our past history, but they are different people who have unique futures. Although these realms are invisible and can’t communicate with each other, prominent physicists are convinced they must exist.

Grasp the important ideas that have served as the backbone of philosophy across the ages with this extraordinary 60-lecture series. This is your opportunity to explore the enormous range of philosophical perspectives and ponder the most important and enduring of human questions-without spending your life poring over dense philosophical texts.

Professor Connel Fullenkamp of Duke University guides listeners through four centuries of economic disasters - from tulip mania in the 1600s to the Great Recession of 2007-2009. Each of his 24 lectures covers a notable incident of financial misfortune or folly that is worthy of a Hollywood thriller.  

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.

In 20 captivating lectures, Professor Suzanne Pilaar Birch shares her expertise and passion for discovery as she peels back the years to expose the emergence and lives of early humans. You will learn about their environmental challenges, the methods they used to meet their basic needs, cultural development, and the fascinating advances in our own technologies that have allowed us to take their few physical remains and develop a much fuller picture.

If you've ever wondered why you seem to get trapped in an endless cycle of obsessive, compulsive thoughts, you don't have to wonder anymore. Grounded in cutting-edge neuroscience and evidence-based cognitive behavioral therapy (CBT), Rewire Your OCD Brain will show you how and why your brain gets stuck in a loop of obsessive thinking, uncertainty, and worry; and offers the tools you need to short-circuit this response and get your symptoms under control-for good.

In Understanding Cognitive Biases, you will learn how to recognize biases for what they are, counteract them when necessary, and even use them to your advantage in some instances. In 24 fascinating lectures, Dr. Alexander B. Swan uses examples from psychology experiments, history, politics, movies, TV, comics, social media, and more to illustrate dozens of cognitive biases that affect us all.

"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.

Whether complete or only fragmentary, the 930 extant Dead Sea Scrolls irrevocably altered how we look at and understand the foundations of faith and religious practice. Now you can get a comprehensive introduction to this unique series of archaeological documents, and to scholars' evolving understanding of their authorship and significance, with these 24 lectures. Learn what the scrolls are, what they contain, and how the insights they offered into religious and ancient history came into focus.

Whether you're imagining your new business to be the next big thing in Silicon Valley, a pivotal B2B provider, or an anchor in your local community, the Harvard Business Review Entrepreneur's Handbook is your essential resource for getting your company off the ground. Starting an independent new business is rife with both opportunity and risk. And as an entrepreneur, you're the one in charge: Your actions can make or break your business. You need to know the tried-and-true fundamentals - from writing a business plan to getting your first loan.