The 1854 Broad Street Cholera Outbreak (Encore)
In 1854 an unusually severe outbreak of cholera occurred in London. While cholera was not an uncommon disease, physicians at the time weren’t sure what caused it. This time, one doctor took a comple...
26 Apr 202412min
Qin Shi Huang: China's First Emperor
In 259 BC, a boy named Ying Zheng was born in the state of Qin in modern-day China. He was born into the royal family of the kingdom and ascended to the throne at the age of 13. For most people, bec...
25 Apr 202414min
Central Park
In the 19th century, New York City was one of the fastest-growing cities in the world. However, it was still a very young city, and as such, the city’s leaders were able to take a step back and plan ...
24 Apr 202414min
Concorde: The World’s Fastest Passenger Airplane
Almost as soon as Chuck Yeager broke the sound barrier in 1947, people began thinking of ways to transport passengers at supersonic speeds. However, the challenges in creating a passenger aircraft th...
23 Apr 202412min
The Battle of the Teutoburg Forest (Encore)
Today in Western Europe, there is a line that divides speakers of Germanic languages and speakers of Romance languages. While that line has shifted over time, its existence can be traced back to a bat...
22 Apr 202412min
The Largest Known Things in the Universe
The universe is big. Really, really big. So big that it is hard to intuitively grasp its size because we have nothing in our lives that we could compare it to. Not only is the university big, but wit...
21 Apr 202414min
The Origin of Words and Phrases: Military
The English language has evolved organically, gathering words and phrases from different languages, countries, and communities. It should come as no surprise that many of the words in English have co...
20 Apr 202413min
Batteries
The odds are quite good that somewhere around you right now as you listen to me speak these words, is a battery. Whether it is in your smartphone, earbuds, automobile, smoke detector, or laptop, batt...
19 Apr 202415min
