Bird Migrations
Every year, hundreds of millions of birds around the world migrate. Some migrate short distances, some migrate incredibly long distances, and others don’t bother to migrate at all. For centuries, peo...
7 Okt 202414min
The Origins of Playing Cards (Encore)
Sitting in most homes is a deck of playing cards. Cards and card games have become almost ubiquitous They are played by children and in retirement homes. They are played at family picnics, and there a...
6 Okt 202413min
The 1204 Crusader Sack of Constantinople
One of the defining events of the Middle Ages took place in Constantinople on April 12, 1204. Soldiers of the Fourth Crusade, under orders of the Doge of the Republic of Venice, breached the walls an...
5 Okt 202414min
The Khmer Empire
For over 600 years, the empire that dominated the region of Southeast Asia was the Khmer Empire. Built out of a collection of kingdoms, the Khmer Empire dominated its corner of Asia. It was an advanc...
4 Okt 202413min
Oxygen (Encore)
All around you, in the air and the ground, is the most common element on Earth: Oxygen. As you are certainly well aware, Oxygen is required for life on Earth as we know it. But you might realize that ...
3 Okt 202414min
The Newspaper Wars: Pulitzer vs Hearst
In the late 19th and early 20th centuries, several major Americans were the battleground for a conflict between two great powers. These powers were not armies or nations; rather, they were newspaper ...
2 Okt 202415min
Questions and Answers: Volume 23
Every October in the Northern Hemisphere, leaves on the trees turn color and fall to the ground. While the leaves turn from green to the bright colors of autumn, listeners' green questions are also t...
1 Okt 202415min
Roman Roads
When we look at history, we tend to focus on grand things like great leaders and great battles. In reality, what makes for successful empires is often the mundane: stable laws, an uncorrupt civil serv...
30 Sep 202413min
