logo
episode-header-image
Aug 2025
35m 59s

The Slow Invention of Spray Paint

iHeartPodcasts
About this episode
The possible contenders for the title of inventor of spray paint were actually working across decades. And really, all those people contributed pieces of the story. 
Up next
Yesterday
Rebecca Smith Pollard, aka Kate Harrington
Rebecca Smith Pollard published a book of poems to mark the U.S. centennial in 1876, and also a novel with some questionable messages. She also developed a method to teach children to read that was ahead of its time. Research: Chetwynd, Sally Morong “Sam.” “Birth of Rebecca Smith ... Show More
41m 43s
Jun 15
The Life and Afterlife of Casimir Pulaski
Pulaski is often built up into an almost mythic figure who represents patriotism, bravery, freedom, independence, and the U.S. as a melting pot. a nation of immigrants. But there’s also a very different version of his story. Research: “Benjamin Franklin to George Washington, 29 M ... Show More
45m 10s
Jun 13
SYMHC Classics: Redpath Murders
This 2022 episode covers the 1901 discovery of Ada Maria Redpath and her son Jocelyn Clifford dead in their home. What exactly happened between the two of them is something we will likely never understand.See omnystudio.com/listener for privacy information. 
32m 44s
Recommended Episodes
Jan 2025
Hunting the Unabomber
During a 17-year bombing campaign, an elusive terrorist known as the Unabomber killed three and injured 23 Americans.In 1995, he contacted The New York Times and The Washington Post promising to stop his terror attacks if they published his 35,000-word manifesto. The document exp ... Show More
10m 2s
Aug 2024
The Radium Girls
<p>When Marie and Pierre Curie discovered radium in 1898, the chemical element was quickly adopted by manufacturers for its luminescent properties that would go on to be used in, among other things, the painting of clock faces, watches, and instrument panels, allowing them to be ... Show More
1h 22m
Jul 2024
Subway Art and terror in Georgia
Max Pearson presents a collection of the week's Witness History episodes.We hear about the era-defining book Subway Art and how Fight the Power became a protest anthem. Artist curator Marianne Vosloo explains how both street art and hip-hop are linked.Plus, two stories from Georg ... Show More
50m 2s
Jan 2025
Sarin gas attack on the Tokyo subway
In 1995, an obscure Japanese religion launched a chemical attack on the Tokyo metro. Members of the doomsday cult, which called itself Aum Shinrikyo, dropped plastic bags containing sarin liquid on the floors of five different trains and then pierced them. As the liquid evaporate ... Show More
9m 54s
Mar 2025
The invention of the shopping trolley and the Calais 'Jungle'
Max Pearson presents a collection of the week’s Witness History interviews from the BBC World Service.We find out how Sylvan Goldman’s invention of the shopping trolley in 1930s America turned him into a multi-millionaire.Our expert is Rachel Bowlby, Professor of Comparative Lite ... Show More
50m 55s
Jun 2025
Alan Michelson Talks Dinosaurs, Murderous US Presidents, and Platinum-Gilded Native “Knowledge Keepers”
As a child, Alan Michelson often rode the T past sculptor Cyrus Edward Dallin’s “Appeal to the Great Spirit” (1908) outside the Museum of Fine Arts, Boston (MFA). He was riveted by the statue’s grand horse and the powerful yet melancholy figure wearing a striking Plains Indian wa ... Show More
52m 19s
May 2025
The history of photography
Max Pearson presents a collection of the week's Witness History interviews from the BBC World Service. The expert guest is Dr Mirjam Brusius, a research fellow in colonial and global history at the German Historical Institute.First, we hear about Martín Chambi - Peru's pioneering ... Show More
50m 58s
Sep 2025
The Loophole You Can Drive A Truck Through
But I need my truck to drive to my job at JPMorgan. BONUS EPISODES available on Patreon (https://www.patreon.com/deniersplaybook) SOCIALS & MORE (https://linktr.ee/deniersplaybook) WANT TO ADVERTISE WITH US? Please contact sponsors@multitude.productions DISCLAIMER: Some media cli ... Show More
1h 33m
Oct 2025
'I designed the Indian rupee symbol'
In 2009, the Indian government launched a national competition to find a design for the Indian rupee.With more than 3,000 entries and five finalists, the winning design was announced on 15 July 2010.The designer was by Udaya Kumar Dharmalingam, a student at the Industrial Design ... Show More
10m 29s
Mar 2025
The history of space travel
Max Pearson presents a collection of this week's Witness History episodes from the BBC World Service. This week we’re looking at the history of space travel, including the 60th anniversary of the first ever space-walk by Russian cosmonaut Alexei Leonov. Also, the speech that woul ... Show More
51m 8s