We head to some of the happiest places on earth: amusement parks! Ira Glass takes us behind the scenes at Worlds of Fun in Kansas City, where the young staff – coached by a funny, fun-loving boss just a little older than they are – truly seem to love their jobs.

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(00:00:00) Prologue: Host Ira Glass walks through a Kansas City Missouri amusement park called Worlds of Fun with Cole Lindbergh, who had a season pass to the park as a little kid, starting working there summers at 14, and then just stayed. Now he's a full-time, year-round employee, running the games department. It's possible he does this job better than anyone in the country. (9 minutes)

(00:09:26) Act One: Ira continues with Cole Lindbergh and the teenagers who work for him in the games department at Worlds of Fun. We watch them compete against each other to see who can do the most business. (23 minutes)

(00:32:26) Act Two: We asked for your stories about amusement parks. Three hundred of you called in, with stories of fear, floating carnies and, um, vomit. (9 minutes)

(00:42:15) Act Three: Jonathan Goldstein returns to Wildwood, New Jersey, where he spent one not-fateful summer when he was sixteen. (13 minutes)

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People dealing with new, glaring, massive changes happening right where they live.

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(00:00:00) Prologue: Rick Cole, a city councilmember in Pasadena, CA, talks to Ira about how he responded to a surprise nighttime military exercise in his neighborhood this June – complete with helicopters, gunfire, and flash bangs. (5 minutes)

(00:05:30) Act One: A doctor trained as a midwife tells the eye-popping story of how she and others came together to save a baby during a birth that suddenly went wrong, in a part of rural Maine where the local labor and delivery unit had closed less than a month before. (26 minutes)

(00:34:56) Act Two: Producer Valerie Kipnis never felt inside the jokes and stories her family would tell about growing up in the Soviet Union, until she saw this year's Oscar-winning documentary, Mr. Nobody Against Putin. The film follows the changes unfolding in one school as Russia rolled out a nationwide propaganda push after its full-scale invasion of Ukraine. Valerie interviewed the young teacher at the center of the documentary and learned things that never made it into the film. (21 minutes)

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Defense Secretary Pete Hegseth has ordered everyone over 30 in the military to have their testosterone tested. That inspired us to rerun this classic episode where everyone at This American Life tested their testosterone and compared results. It did not lead to workplace harmony.

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(00:00:00) Prologue: Host Ira Glass talks with producer Alex Blumberg, who explains that he wanted to do this show because of his conflicted relationship with his own testosterone. He tells Ira that the reasons go back to a girl in his 8th-grade homeroom. We also hear from a man who stopped producing testosterone due to a medical treatment, and found his entire personality was altered. (10 minutes)

(00:10:45) Act One: What’s it like to get injected with testosterone? When Griffin Hansbury transitioned, he got massive shots of it and was surprised at the effect it had on him. (17 minutes)

(00:27:56) Act Two: The men and women on staff at This American Life decide to get their testosterone levels tested to see who has the most and least, and whether personality traits actually match hormone levels. (13 minutes)

(00:40:16) Act Three: What happens when a man suddenly loses all of his testosterone? We return to Alex Blumberg’s interview from the top of the show with a man who that happened to. He says life without testosterone is life without desire. By that he doesn’t mean sexual desire. He means any desire. (6 minutes)

(00:46:47) Act Four: Novelist Miriam Toews interviews her 15-year-old son, someone at an age when boys experience a jolt of ten or twenty times the testosterone they had as children, about all the things she doesn’t understand about what he’s going through. (11 minutes)

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