What does quantum mechanics tell us about our world -- or are there many worlds due to probability waves? How does the general theory of relativity mesh with quantum mechanics? If you've wished you understood quantum mechanics (or at least grasped the basics) physicist Brian Greene can help!
2015 • Physics
You may think you know who wrote the Declaration of Independence and what it says -- but do you really? Political theorist Danielle Allen looks at the document's origin and originators to give us a picture of the men and the moment in time that shaped the United States of today.
2015 • People
It is hard to imagine a sky without an airplane in it. But David McCullough takes us back to the first days of aviation. We learn about the Wright Brothers, not only through their achievements, but by discovering who they were as people and the early family influences that shaped their characters.
2015 • People
How has Capitalism affected the world? Raj Sisodia, economic analyst, takes us back to pre-Industrial Revolution to show how our standard of living has improved. But now , he feels, it is time for another kind of capitalism - conscious capitalism - based on a value system deeper than profits.
2015 • Economics
Paul Saffo looks at the development of the US economy through the 20th and into the 21st century. What are the trends that have shaped the economy? How are innovations in technology and communications making the 21st century an entirely different landscape for producers and consumers?
2015 • Economics
In the 21st century devices create more data than humans do. Rick Smolan, author of The Human Face of Big Data, shows the positive force of the collection of data in worldwide examples of the uses of medical data, personal data and business data to enrich people's lives.
2015 • Technology
Helen looks at the latest scientific insight into the aurora - dancing lights in the night sky that have fascinated cultures throughout our history. From the networks of cameras now capturing its vast scale, to novel experiments that probe the threat it poses to modern technology, Helen reveals the dramatic transformation in our understanding of the aurora, and the many mysteries that remain to be solved.
On a journey across Africa towards the war-torn Congo, the travellers encounter chimpanzees, gorillas and elephants, but are there any northern white rhinos still alive in the wild? The news is not good but there is some hope in the remarkable project under way to save the black rhino in Kenya.
The Mackenzie Delta is an Arctic network of channels and islands at the mouth of Canada's largest river. It's home to the ancient Inuit, as well as a variety of highly specialized wildlife, including the sonorous sandhill and majestic peregrine falcon. Follow them as they contend with a rapidly changing climate.
In Taiji, Japan, local fishermen hide a gruesome secret: the capture and slaughter of dolphins. Activist Ric O'Barry, who trained dolphins for the "Flipper" TV series, joins forces with filmmaker Louis Psihoyos and the Ocean Preservation Society to expose the brutal practice, risking life and limb in the process.
2009 • Nature