Jonas Salk’s polio vaccine transformed America and the world in ways that seemed unimaginable. But in 1955, there was a moment when everything was in doubt. This week, Josh Levin talks with Dr. Paul Offit about the medical mystery that threatened to derail one of history’s most important scientific breakthroughs.

Josh Levin is One Year’s editorial director. One Year’s senior producer is Evan Chung.

This episode was produced by Kelly Jones, Evan Chung, and Sophie Summergrad. 

It was edited by Josh Levin, Joel Meyer, and Derek John, Slate’s executive producer of narrative podcasts. 

Merritt Jacob is our senior technical director.

Join Slate Plus to get a bonus 1955 episode at the end of the season. Slate Plus members also get to listen to all Slate podcasts without any ads. Sign up now to support One Year.

Learn more about your ad choices. Visit megaphone.fm/adchoices

When Alaskans wanted their own mental-health facility, a rumor took hold all over America. This week, Evan Chung traces the origins of that far-right conspiracy theory: that the government was building a concentration camp where Americans would get imprisoned for their political beliefs. Get ready for a strange tale that involves a brainwashing manual, Scientology, and a vast network of Communist-hunting housewives.

Josh Levin is One Year’s editorial director. One Year’s senior producer is Evan Chung.

This episode was produced by Kelly Jones and Evan Chung, with additional production by Sophie Summergrad. 

It was edited by Josh Levin, Joel Meyer, and Derek John, Slate’s executive producer of narrative podcasts. 

Merritt Jacob is our senior technical director.

Join Slate Plus to get a bonus 1955 story at the end of the season. Slate Plus members also get to listen to all Slate podcasts without any ads. Sign up now to support One Year.

Learn more about your ad choices. Visit megaphone.fm/adchoices

In the early days of television, women struggled to find their place. In 1955, they got it: forecasting the weather, on stations all across the country. But as these “weather girls” transformed the airwaves, a group of powerful men hatched a plan—one that had the potential to push women weathercasters off the air forever.

Josh Levin is One Year’s editorial director. One Year’s senior producer is Evan Chung.

This episode was produced by Kelly Jones and Evan Chung, with additional production by Sophie Summergrad. 

It was edited by Joel Meyer and Derek John, Slate’s executive producer of narrative podcasts. 

Merritt Jacob is our senior technical director.

Join Slate Plus to get the first three episodes of One Year: 1955 right away—and a bonus 1955 story at the end of the season. Slate Plus members also get to listen to all Slate podcasts without any ads. Sign up now to support One Year.

Learn more about your ad choices. Visit megaphone.fm/adchoices

In 1955, the frontiersman Davy Crockett became the most famous man in America, more than a century after his death at the Alamo. This week, Evan Chung dives into a cultural phenomenon nobody saw coming. Not the kids in coonskin caps who started the craze, not the parents whose money fueled it, and least of all Walt Disney, the legendary studio head who created it totally by accident.

Josh Levin is One Year’s editorial director. One Year’s senior producer is Evan Chung.

This episode was produced by Kelly Jones and Evan Chung, with additional production by Sophie Summergrad. 

It was edited by Joel Meyer and Derek John, Slate’s executive producer of narrative podcasts. 

Merritt Jacob is our senior technical director.

Join Slate Plus to get the first three episodes of One Year: 1955 right away—and a bonus 1955 story at the end of the season. Slate Plus members also get to listen to all Slate podcasts without any ads. Sign up now to support One Year.

Learn more about your ad choices. Visit megaphone.fm/adchoices

The Cannon Street All-Stars dreamed of playing in the 1955 Little League World Series. Their biggest obstacle didn’t come on the field. In the year that Rosa Parks refused to give up her seat on a public bus, these Black 12-year-olds became unlikely civil rights pioneers—and faced the wrath of a white society that wasn’t ready to change.

Josh Levin is One Year’s editorial director. One Year’s senior producer is Evan Chung.

This episode was produced by Kelly Jones and Evan Chung, with additional production by Sophie Summergrad. 

It was edited by Joel Meyer and Derek John, Slate’s executive producer of narrative podcasts. 

Merritt Jacob is our senior technical director.

Join Slate Plus to get the first three episodes of One Year: 1955 right away—and a bonus 1955 story at the end of the season. Slate Plus members also get to listen to all Slate podcasts without any ads. Sign up now to support One Year.

Learn more about your ad choices. Visit megaphone.fm/adchoices

Coming Thursday, August 31st, the fifth season of One Year covers 1955. A year when a team of 12-year-olds tried to integrate Little League, “weather girls” took the country by storm, and a conspiracy theory about Communist brainwashing infected the nation’s politics.

One Year is history like you’ve never heard it before. In each season, host Josh Levin brings you the weirdest, wildest, and most captivating moments from a single year in American history. You’ll hear stories you may have forgotten and ones you won’t believe you didn’t know, all told by the people who lived through them. 

Learn more about your ad choices. Visit megaphone.fm/adchoices

In this Slate Plus episode, host Josh Levin and senior producer Evan Chung share behind-the-scenes stories from the making of the fourth season of One Year. Then, Josh is joined by historian Tracy Campbell to talk about his book The Year of Peril: America in 1942.

Slate Plus members have access to this whole conversation. Sign up for Slate Plus to listen to this exclusive episode and support the show.

Learn more about your ad choices. Visit megaphone.fm/adchoices

In 1942, federal officials targeted a group of Black Americans who were allegedly hoping for a Japanese invasion. They uncovered a plot that included stockpiles of weapons and secret passwords—but was any of it true? This week, Joel Anderson tells the story of a shadowy organization in East St. Louis, Illinois, the group’s mysterious leader, and an alleged conspiracy against America during World War II.

This episode of One Year was produced by Evan Chung, Sophie Summergrad, Sam Kim, Joel Anderson, Sol Werthan, and Josh Levin.

Derek John is executive producer of narrative podcasts and Merritt Jacob is senior technical director.

Slate Plus members get to hear more about the making of One Year. Get access to extra episodes, listen to the show without any ads, and support One Year by signing up for Slate Plus for just $15 for your first three months.

Learn more about your ad choices. Visit megaphone.fm/adchoices

Six months after Pearl Harbor, Japan launched another attack on the United States. This time, Axis forces actually invaded, turning the Aleutian Islands into a battleground. What the country did next, in the name of “protecting” Alaska’s indigenous people, is a shameful chapter of the war. And it’s one the nation has never fully reckoned with.

This episode of One Year was produced by Evan Chung, Sophie Summergrad, Sam Kim, Sol Werthan, and Josh Levin.

Derek John is senior supervising producer of narrative podcasts and Merritt Jacob is senior technical director.

Slate Plus members get to hear more about the making of One Year. Get access to extra episodes, listen to the show without any ads, and support One Year by signing up for Slate Plus for just $15 for your first three months.

Learn more about your ad choices. Visit megaphone.fm/adchoices

In March 1942, a new nightly radio show hit the American airwaves. The stated goal of Station Debunk was to correct all the lies getting tossed around about America’s involvement in the war. But the real story was a whole lot stranger and more devious than it appeared.

One Year is produced by Evan Chung, Sophie Summergrad, Sam Kim, and Josh Levin.

Derek John is senior supervising producer of narrative podcasts and Merritt Jacob is senior technical director.

Slate Plus members get to hear more about the making of One Year. Get access to extra episodes, listen to the show without any ads, and support One Year by signing up for Slate Plus for just $15 for your first three months.

Learn more about your ad choices. Visit megaphone.fm/adchoices