Logic is intellectual self-defense against such assaults on reason and also a method of quality control for checking the validity of your own views. But beyond these very practical benefits, informal logic—the kind we apply in daily life—is the gateway to an elegant and fascinating branch of philosophy known as formal logic, which is philosophy’s equivalent to calculus. Formal logic is a breathtakingly versatile tool. Much like a Swiss army...

There is a bit of a mystery about Ramses's reign. Its last 40 years were rather sedentary. In considering what might have happened, you will see how a pharaoh with the resources of Ramses prepared himself and his family for the next world.

Learn why quadratic equations have "quad" in their name, even though they don't involve anything to the 4th power. Then try increasingly challenging examples, finding the solutions by sketching a square. Finally, derive the quadratic formula, which you've been using all along without realizing it.

Uncover the story behind the famous terra-cotta warriors, one of China's most celebrated archaeological treasures. Travel into daily life in the Qin Dynasty, China's first empire; encounter the emperor Qinshi Huangdi, builder of the warriors, and observe his highly bureaucratic and technocratic regime. Explore the site of the terra-cotta army, and how the extraordinary clay figures were made.

Professor Murray reveals how forensics has shed light on the ways political assassins try to get away with murder. Along with the ricin poisoning of anti-Communist Georgi Markov and the shooting of Swedish Prime Minister Olof Palme, consider the lingering forensic mystery of PLO leader Yasser Arafat's death in 2004.

Explore the relationship between the risk of investing in stocks and the return you can expect from owning them. Survey the average return on a broad portfolio of stocks held over many decades. Next, focus on the short-term volatility that makes many people understandably nervous.

Tai chi is both moving meditation and movable meditation-you can perform the form anywhere, and you carry the mental aspects with you in every situation. This exemplifies the principle of tranquility within movement, and movement within tranquility. Continue your study of the form with turn and pat the foot and ride the tiger.

In this second lecture on Portrait, consider how the English language presents a great tension for Irish writers, and see how Joyce's solution was to conquer the language of the conquerors. Then watch as the book's hero, Stephen Dedalus, takes his first steps as an artist to forge in the smithy of my soul the uncreated conscience of my race.

Add to your marketing toolkit some of the principles and strategies of an effective communications plan, with a look at some successful (and unsuccessful) ad campaigns, including the California Milk Processor Board's famous Got Milk" campaign. Also, get tips on how to command consumers' attentions without turning them off.

See how scholars revealed a lost world of language and literature when they expanded upon Grotefend's breakthroughs by relating Old Persian to the ancient cuneiform scripts that preceded it. Next, trace the development of writing through 3,500 years of Mesopotamian history, and consider what ancient texts such as The Epic of Gilgamesh can teach about ancient cultures of this region.