Where did time-telling come from? What are time zones and why are there so many of them? Get the answers to these questions and more in this journey through the history of time – from sundials to hourglasses to modern clocks.

We all know the words around electricity, “charge,” “positive,” “battery” and more. But where do they come from and what do they really mean? Let the history of these words illuminate the physics of electric phenomena.

Scientific discovery isn’t as simple as one good experiment. The weird and wonderful history of cell theory illuminates the twists and turns that came together to build the foundations of biology.

One of the most successful business models is the franchise, but it didn’t originate with McDonald’s. Sir Harold Evans, the author of They Made America, describes the remarkable story of a beauty salon that allowed hundreds of women to own their own businesses.

Sometimes a single unlikely idea can have massive impact across the world. Sir Harold Evans, the author of They Made America, describes how frustration drove Malcom McLean, a small-town truck driver, to invent the shipping container. Containerization was born, and it transformed the modern global economy.