One of the greatest scientific feats of our era is the astonishing progress made in understanding biology-the intricate machinery of life-a progress to which the period we are living in right now has contributed the most.As you read these words, researchers are delving ever deeper into the workings of living systems, turning their discoveries into new medical treatments, improved methods of growing food, and innovative products that are already changing the world.

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. 

There's an art and science behind how doctors diagnose and treat medical patients. Where do doctors get these skills? The Grand Rounds experience, where they practice how to make accurate diagnoses by examining real patients. And with Dr. Benaroch's 24 unique lectures, you'll explore how a master physician solves medical problems just like a detective.

Touched off by a terrorist act in Bosnia and spreading all too quickly beyond the expectations of those who were involved, World War I was an unprecedented catastrophe with a ghastly cost. After this first "total war"-the first conflict involving entire societies mobilized to wage unrestrained war, devoting all their wealth, industries, institutions, and the lives of their citizens to win victory at any price - the world itself would never be the same.

 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.  

Most historians study the smallest slivers of time, emphasizing specific dates, individuals, and documents. But what would it look like to study the whole of history, from the big bang through the present day - and even into the remote future? How would looking at the full span of time change the way we perceive the universe, the earth, and our very existence? These were the questions David Christian set out to answer when he created the field of "Big History", the most exciting new approach to understanding where we have been, where we are, and where we are going.

Classical physics is about how things move, why they move, and how they work. It's about making sense of motion, gravity, light, heat, sound, electricity, and magnetism, and seeing how these phenomena interweave to create the rich tapestry of everyday experience. It is, in short, the hidden order of the universe.

The Tao of Seneca (volumes 1-3) is an introduction to Stoic philosophy through the words of Seneca. If you study Seneca, you'll be in good company. He was popular with the educated elite of the Greco-Roman Empire, but Thomas Jefferson also had Seneca on his bedside table. Thought leaders in Silicon Valley tout the benefits of Stoicism, and NFL management, coaches, and players alike - from teams such as the Patriots and Seahawks - have embraced it.

Gravity controls everything from the falling of an apple to the rising of ocean’s tides to the motions of the heavens above. If you’ve ever wondered how this most puzzling force works across our entire universe, you will be delighted by this 24-part course that is accessible to any curious person, regardless of your science education. No other product on the market presents the subject of gravity in as much detail as this course, which will follow the past 400 years of research and experimentation in the field.

Centuries ago, Spanish conquistadors searching for gold and new lands encountered a group of independent city-states in Mesoamerica. Sophisticated beyond the Spaniards' wildest imaginings, these people were the Aztecs, the Maya, and related cultures that shared common traditions of religion, government, the arts, engineering, and trade. In many ways more advanced than European nations, these societies equaled the world's greatest civilizations of their time.

Despite our best efforts, we're all vulnerable to believing things without using logic or having proper evidence—and it doesn't matter how educated or well read we are.

Your nervous system is you. All the thoughts, perceptions, moods, passions, and dreams that make you an active, sentient being are the work of this amazing network of cells. For many centuries, people knew this was true. But no one was sure how it happened. Now, thanks to the exciting new field of neuroscience, we can chart the workings of the brain and the rest of the nervous system in remarkable detail to explain how neurons, synapses, neurotransmitters, and other biological processes produce all the experiences of everyday life, in every stage of life.  

At the end of his career, Albert Einstein was pursuing a dream far more ambitious than the theory of relativity. He was trying to find an equation that explained all physical reality - a theory of everything. Experimental physicist and award-winning educator Dr. Don Lincoln takes you on this exciting journey in The Theory of Everything: The Quest to Explain All Reality. Suitable for the intellectually curious at all levels and assuming no background beyond basic high-school math, these 24 half-hour lectures cover recent developments at the forefront of particle physics and cosmology.

In his final novel - which he considered his most important - Aldous Huxley transports us to the remote Pacific island of Pala, where an ideal society has flourished for 120 years. Inevitably, this island of bliss attracts the envy and enmity of the surrounding world. A conspiracy is underway to take over Pala, and events are set in motion when an agent of the conspirators, a newspaperman named Faranby, is shipwrecked there. What Faranby doesn't expect is how his time with the people of Pala will revolutionize all his values and - to his amazement - give him hope.

The science fiction genre has become increasingly influential in mainstream popular culture, evolving into one of the most engaging storytelling tools we use to think about technology and consider the shape of the future. Along the way, it has also become one of the major lenses we use to explore important philosophical questions. The origins of science fiction are most often thought to trace to Mary Shelley's novel Frankenstein, a story born from a night of spooky tale-telling by the fireside that explores scientific, moral, and ethical questions that were of great concern in the 19th century - and that continue to resonate today.