July 16, 1945. It happened within a millionth of a second. In the New Mexico desert in the early morning hours, a group of scientists watched in anticipation as the countdown began. It was silent at first, yet hot and unbelievably bright. Then came the sound. The first-ever atomic bomb explosion... was a success. How did scientists working on the Manhattan P ... Show More
Nov 2
How Biddy Mason Found Her Freedom in Los Angeles
November 8, 1864. Election Day. Abraham Lincoln watches from a White House window, convinced he might lose. Three thousand miles away in Los Angeles, a Confederate hotbed in a so-called free state, Biddy Mason has more riding on the result than almost anyone in the country.Sixtee ... Show More
31m 35s
Oct 30
Salem’s First Witch Trial
Happy Halloween! Today, we're bringing back a particularly spooky episode from the archives...June 10, 1692. Bridget Bishop is loaded into a two-wheeled cart and brought from her Salem jail cell to a pasture on a hill, where a rope is hanging from freshly-installed gallows. A cro ... Show More
28m 48s
Jan 2024
The Manhattan Project | Devastating Success | 3
In Spring of 1945, the tides of World War 2 turned. Germany surrendered to the Allies, but Japan vowed to keep fighting. To prevent further casualties, America knew they would have to demonstrate their power, and force Japan to surrender quickly. At Los Alamos, J. Robert Oppenhei ... Show More
40m 32s
Aug 2025
Hiroshima: in the shadow of the bomb
At 8.15am on 6 August 1945, an atomic bomb exploded over Hiroshima. It was an event that changed the course of history, but it was also one driven by individuals. Here, in conversation with Spencer Mizen, Iain MacGregor tells this story through the eyes of people whose lives were ... Show More
43m 36s
Jan 2024
The Manhattan Project | Chain Reaction | 1
In December 1938, a team of German physicists achieved an astonishing scientific breakthrough: they split the nucleus of a uranium atom. In the United States, news of the discovery sparked fear in the scientific community. Atomic fission could power a devastating new weapon, and ... Show More
40m 4s
Feb 2023
How Women Won WWII: With a Flash and a Rumble
For 3 years, scientists in secret cities around the U.S. had been in a race against time to complete the world’s first atomic weapon. And in July of 1945, the very first plutonium bomb was ready. Constructing “The Gadget” as it was called, had taken 2 billion dollars and the coll ... Show More
29m 4s