To better put into perspective the various issues surrounding energy in the 21st century, you need to understand the essential science behind how energy works. And you need a reliable source whose focus is on giving you the facts you need to form your own educated opinions.

 How the Earth Works takes you on an astonishing journey through time and space. In 48 lectures, you will look at what went into making our planet - from the big bang, to the formation of the solar system, to the subsequent evolution of Earth.  

History is made and defined by landmark events-moments that irrevocably changed the course of human civilization. They have given us: spiritual and political ideas; catastrophic battles and wars; scientific and technological advances; world leaders both influential and monstrous; and cultural works of unparalleled beauty.

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.

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. 

Nothing has had a more profound impact on the development of modern civilization than thermodynamics. Thermodynamic processes are at the heart of everything that involves heat, energy, and work, making an understanding of the subject indispensable for careers in engineering, physical science, biology, meteorology, and even nutrition and culinary arts. Get an in-depth tour of this vital and fascinating science in 24 enthralling lectures suitable for everyone from science novices to experts who wish to review elementary concepts and formulas.

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. 

Professor John McWhorter of Columbia University takes you back through time and around the world, following the linguistic trails left by generations of humans that lead back to the beginnings of language. Utilizing historical theories and cutting-edge research, these 34 astonishing lectures will introduce you to the major language families of the world and their many offspring, including a variety of languages that are no longer spoken but provide vital links between past and present. 

As raiders and explorers, the Vikings played a decisive role in the formation of Latin Christendom, and particularly of western Europe. Now, in a series of 36 vivid lectures by an honored teacher and classical scholar, you have the opportunity to understand this remarkable race as never before, studying the Vikings not only as warriors, but in all of the other roles in which they were equally extraordinary - merchants, artists, kings, raiders, seafarers, shipbuilders, and creators of a remarkable literature of myths and sagas.

In the 24 engaging lectures of The Nature of Matter, no scientific background is needed to appreciate such miracles of everyday life as a bouncing rubber ball or water's astonishing power to dissolve. Moreover, the study of matter has led directly to such inventions as semiconductor circuits for computers, new fabrics for clothes, and powerful adhesives for medicine and industry.

For 3,000 years, mankind has grappled with fundamental questions about life. What is real? Who or what is God? When is it legitimate for one person to have power over others? What is justice? Beauty? This 84-lecture, 12-professor tour of Western philosophical tradition covers more than 60 of history's greatest minds and brings you a comprehensive survey of the history of Western philosophy from its origins in classical Greece to the present.

Science is humanity's greatest achievement. It ranges from the study of the universe itself to the smallest particles of matter contained within it - and everything in between. If you want to better understand our physical world, as most of us do, gaining a basic understanding of science itself is profoundly important - yet many are intimidated by the breathtaking scope of such an endeavor. Now an award-winning science teacher has taken out the intimidation, harnessing that breathtaking scope into a series of 60 exciting, comprehensive, and accessible lectures.

Innovation is the main event of the modern age, the reason we experience both dramatic improvements in our living standards and unsettling changes in our society. It is innovation that will shape the 21st century. Yet innovation remains a mysterious process, poorly understood by policy makers and businessmen alike. Matt Ridley argues that we need to see innovation as an incremental, bottom-up, fortuitous process that happens as a direct result of the human habit of exchange, rather than an orderly, top-down process developing according to a plan. 

Nutrition is essential to living a healthy, happy, and successful life. Yet a world of misconceptions and promises of easy results too often stands in our way-and can even be harmful to our overall health. The key is to cut through the noise and find the medically backed, statistically proven information about healthy eating and living. These 36 in-depth lectures explore the fundamentals of good nutrition and offer a practical guide for applying these fundamentals to your lifestyle.