Stuff You Should Know

Stuff You Should Know

「Stuff You Should Know」は、iHeartPodcastsが制作する、世界的に高い評価を得ている教養系ポッドキャスト番組です。2008年のスタート以来、ホストのジョシュ・クラークとチャールズ・W・「チャック」・ブライアントは、科学、歴史、文化、社会現象など、あらゆる分野のトピックを掘り下げてきました。

番組の主な目的は、世の中の複雑な仕組みや事象を、専門家ではない一般のリスナーにも分かりやすく解説することにあります。取り上げられるテーマは非常に幅広く、カオス理論や量子力学といった学術的なトピックから、シャンパンの歴史、サタニズムの起源、ストーンウォールの反乱、さらにはLSDやエルニーニョ現象といった社会・自然現象まで多岐にわたります。各エピソードは徹底したリサーチに基づいて構成されており、トピックの歴史的背景、科学的根拠、そして現代社会における意義が詳しく語られます。

スタイルとしては、ホスト二人のカジュアルで親しみやすい会話形式が特徴です。難しい内容であっても、ユーモアを交えながらステップバイステップで説明されるため、聴取者はリラックスした状態で知識を深めることができます。通常のエピソードは45分から60分程度ですが、短時間で一つのトピックを扱う「Short Stuff」という短編シリーズも定期的に公開されています。

本番組は、ポッドキャストという媒体が普及する初期段階からトップクラスの人気を維持し続けており、累計ダウンロード数は数十億回に達しています。情報提供の客観性と、知的好奇心を刺激する独自の語り口により、世界中のリスナーにとって信頼できる知識の源泉となっています。ジャンルを問わず「物事の裏側」を知りたいと願う人々にとって、最も網羅的でアクセシブルな音声コンテンツの一つとして確立されています。

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エピソードの概要

In this retrospective episode, the hosts explore the history and reality of fallout shelters, prompted by a personal anecdote of being trapped in an abandoned school basement. The discussion covers the mechanics of radioactive particles, the concept of Protection Factors, and the 1950s-60s craze for survival supplies like 'Meals for Millions'. The episode further details the U.S. government's National Fallout Shelter Survey initiated by President Kennedy and examines the psychological impact of nuclear anxiety during the Cold War. The hosts also address DIY shelter construction methods from Oak Ridge National Laboratory and conclude with listener mail regarding terminology corrections.

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on Wednesday, I got trapped in the Fallout Shelter in the basement of an abandoned school for 18 hours.

00:00:21 · Josh shares a personal anecdote about being stuck in a shelter to introduce the episode's topic.

President Kennedy, John F. Kennedy, that is, asked Congress for $100 million to build public fallout shelters.

00:06:58 · The hosts discuss the historical scale of government involvement in nuclear protection during the Cold War.

If you think about an SPF for sunscreen, it's the same exact way with a fallout shelter. You have a PF, a protection factor.

00:16:38 · The host uses a common analogy to explain how the Protection Factor of a shelter is measured.

the government in doing something like trying to at least lift some finger and make people feel less anxious actually had the opposite effect because it drew a lot of attention and focus to the need for fallout shelters

00:33:44 · The host explains how the government's attempt at civil defense inadvertently increased public anxiety.

The term Aborigines is considered outdated and offensive as it groups all indigenous groups into one term and as connotations of colonial Australia.

00:45:20 · The hosts read an email from a listener correcting their use of insensitive terminology in a previous episode.

エピソード

3717-

Selects: Fallout Shelters: Probably Useless (Let’s Never Find Out)

In this retrospective episode, the hosts explore the history and reality of fallout shelters, prompted by a personal anecdote of being trapped in an abandoned school basement. The discussion covers the mechanics of radioactive particles, the concept of Protection Factors, and the 1950s-60s craze for survival supplies like 'Meals for Millions'. The episode further details the U.S. government's National Fallout Shelter Survey initiated by President Kennedy and examines the psychological impact of nuclear anxiety during the Cold War. The hosts also address DIY shelter construction methods from Oak Ridge National Laboratory and conclude with listener mail regarding terminology corrections.

19 9月 2026
3716-

SYSK Gets Weird Playlist: What is Collective Hysteria?

In this episode of 'Stuff You Should Know Gets Weird,' the hosts explore mass psychogenic disorder, also known as collective hysteria. They examine how physical symptoms can manifest without environmental causes, looking at historical cases ranging from the 1518 dancing plague to modern outbreaks. The discussion delves into the nocebo effect and how negative expectations or media coverage can trigger genuine physical distress. The episode concludes with a look at how humans interpret phenomena through available scientific or supernatural lenses, followed by listener mail regarding a personal story of loss.

18 9月 2026
3715-

SYSK Gets Weird Playlist: Mermaids: Not a real thing

This episode of 'Stuff You Should Know' explores the myth and folklore of mermaids, debunking their existence while tracing their cultural impact. The hosts discuss the darker origins of mermaid legends, including how these tales were often rooted in misogyny, and examine various mythological figures like Mami Wata and Atargaddis. The discussion also covers historical eyewitness accounts from explorers like Columbus, suggesting that sightings of manatees may have been misidentified as mermaids. Finally, the episode explores modern mermaid culture, including professional mermaiding as a platform for ecological activism.

18 9月 2026
3714-

SYSK Gets Weird Playlist: What's the deal with blue people?

This episode explores the fascinating science and history behind blue skin, beginning with the story of the Fugate family in Kentucky. The hosts explain how a rare genetic mutation for methemoglobinemia became prevalent due to isolated inbreeding and discuss Dr. Madison Cawein's discovery of methylene blue as a treatment. The discussion then shifts to Argyria, a condition caused by silver accumulation that results in bluish or silvery skin. The hosts examine the historical use of silver as an antimicrobial agent, the risks of unregulated colloidal silver supplements, and recent scientific findings regarding skin repigmentation due to UV adaptation.

18 9月 2026
3713-

SYSK Gets Weird Playlist: Will We Find Evidence of Aliens by Their Engineering Projects?

Following initial advertisements, the hosts dive into the scientific concept of Dyson spheres and the life of Freeman Dyson. The episode explores how these massive megastructures could be used to capture solar energy and serve as a signature for detecting extraterrestrial intelligence via infrared radiation. The discussion covers the Kardashev scale of civilization, the immense power of the sun, and the theoretical engineering challenges of building such structures, including the use of Dyson swarms and disassembling planets like Jupiter or Mercury. The episode concludes with a look at Matryoshka spheres and a heartfelt message from a listener regarding the podcast's impact during a period of grief.

18 9月 2026