Language Families of the World

Language defines us as a species, placing humans head and shoulders above even the most proficient animal communicators. But it also beguiles us with its endless mysteries, allowing us to ponder why different languages emerged, why there isn't simply a single language, how languages change over time and whether that's good or bad, and how languages die out and become extinct.

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. 

Chemistry and Our Universe: How It All Works is your in-depth introduction to this vital field, taught through 60 engaging half-hour lectures that are suitable for any background or none at all. Covering a year’s worth of introductory general chemistry at the college level, plus intriguing topics that are rarely discussed in the classroom, this amazingly comprehensive course requires nothing more advanced than high-school math. Your guide is Professor Ron B. Davis, Jr., a research chemist and award-winning teacher at Georgetown University.

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.

Recent years have seen the introduction of concepts from the new and exciting field of complexity science that have captivated the attention of economists, sociologists, engineers, businesspeople, and many others. These include tipping points, the wisdom of crowds, six degrees of separation (or Kevin Bacon), and emergence. Complexity science can shed light on why businesses or economies succeed and fail, how epidemics spread and can be stopped, and what causes ecological systems to rebalance themselves after a disaster.

Delve into the exciting field of  “epistemology”, the philosophical term for our inquiry into knowledge: what it is, the ways we acquire it, and how we justify our beliefs as knowledge. Taught by acclaimed Professor Joseph H. Shieber of Lafayette College, these 24 mind-bending lectures take you from ancient philosophers to contemporary neurobiologists, and from wide-ranging social networks to the deepest recesses of your own brain. 

There’s a fundamental tension buried within the heart of the CIA’s mission to protect the American people: between democratic accountability and the inherent need for secrecy. Ultimately, it’s US citizens who bear the responsibility of staying informed about what the CIA has done and continues to do. In these 24 engrossing lectures, explore the roles the CIA has played in recent American history, from the eve of the Cold War against communism to the 21st-century War on Terror. 

As consumers of medical news, how can we know whether the article we just read is based on solid science or is just an ill-informed attempt to grab readers? Professor Roy Benaroch of Emory University School of Medicine provides just the direction we need. In 24 fascinating lectures that address the most important health issues of our day - heart health, obesity, longevity, the opioid crisis, the stigma of mental illness, alternative medicine approaches, toxins in the environment, and more - Dr. Benaroch tells us how to recognize the good reporting and the bad.  

The Science of Information: From Language to Black Holes covers the exciting concepts, history, and applications of information theory in 24 challenging and eye-opening half-hour lectures taught by Professor Benjamin Schumacher of Kenyon College. A prominent physicist and award-winning educator at one of the nation’s top liberal arts colleges, Professor Schumacher is also a pioneer in the field of quantum information, which is the latest exciting development in this dynamic scientific field. 

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.

One of the most complicated and advanced computers on Earth can't be purchased in any store. This astonishing device, responsible for storing and retrieving vast quantities of information that can be accessed at a moment's notice, is the human brain. How does such a dynamic and powerful machine make memories, learn a language, and remember how to drive a car? What habits can we adopt in order to learn more effectively throughout our lives? The answers to these questions are merely the tip of the iceberg in The Learning Brain.

Why do we do the things we do? More than a decade in the making, this game-changing book is Robert Sapolsky's genre-shattering attempt to answer that question as fully as perhaps only he could, looking at it from every angle. Sapolsky's storytelling concept is delightful, but it also has a powerful intrinsic logic: He starts by looking at the factors that bear on a person's reaction in the precise moment a behavior occurs and then hops back in time from there in stages, ultimately ending up at the deep history of our species and its evolutionary legacy.

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.

Following the surge of interest and pride in Celtic identity since the 19th century, much of what we thought we knew about the Celts has been radically transformed. In The Celtic World, discover the incredible story of the Celtic-speaking peoples, whose art, language, and culture once spread from Ireland to Austria. This series of 24 enlightening lectures explains the traditional historical view of who the Celts were, then contrasts it with brand-new evidence from DNA analysis and archeology that totally changes our perspective on where the Celts came from.