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Over the last few decades, Apple has produced some of the most recognizable sounds ever made. In this episode, the Apple design team pulls back the curtain on their sound design philosophy and process, from the evolution of the classic “Tritone” alert, to the surprising origins of the Apple Watch sounds, to the inspiration behind the latest notification tones. Featuring Billy Sorrentino, Hugo Verweij and Kelly Jacklin.

Twenty Thousand Hertz is produced by Defacto Sound.

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Episode transcript, music, and credits can be found here: www.20k.org/episodes/the-sound-of-apple

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Yascha Mounk and Shalom Auslander discuss the origins of the stories that make us feel bad about ourselves. 

Shalom Auslander is an American novelist, memoirist, and essayist. He is the author of Foreskin's Lament and, most recently, FEH: A Memoir.

In this week's conversation, Yascha Mounk and Shalom Auslander discuss how religious narratives inherited from the Judeo-Christian tradition affect our sense of self-worth; how to actually help oneself while steering clear of "self-help"; and how to begin the lifelong work of charting a path towards unconditional love and self-acceptance.

This transcript has been condensed and lightly edited for clarity.

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Website: http://www.persuasion.community

Podcast production by Jack Shields, and Brendan Ruberry

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This podcast explores the extraordinary life of the Pakistani physicist Abdus Salam, who is celebrated for his ground-breaking theoretical work and for his championing of physics and physicists in developing countries.

In 1964, he founded the Abdus Salam International Centre for Theoretical Physics (ICTP) in Trieste, Italy – which supports research excellence worldwide with a focus on physicists in the developing world. In 1979 Salam shared the Nobel Prize for Physics for his work on the unification of the weak and electromagnetic interactions.

Salam spent most of his career at Imperial College London and the university is gearing up to celebrate the centenary of his birth in January 2026. In this episode of the Physics World Weekly podcast, Imperial physicists Claudia de Rham and Ian Walmsley look back on the extraordinary life of Salam – who died in 1996. They also talk about the celebrations at Imperial College.

Image courtesy: AIP Emilio Segrè Visual Archives, Physics Today Collection

David Sheff conducted the last major interview with John Lennon. Just as Double Fantasy was being released, Sheff interviewed John & Yoko for Playboy magazine. It was the famous interview where Lennon went through the Beatles catalogue song-by-song - just before he died. The backstory of that interview is fascinating.

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Why is it that mosquitoes seem to go after and bite some people more than others? This episode begins with an explanation of what does and doesn’t make you attractive to this summertime pest. https://hartfordhealthcare.org/about-us/news-press/news-detail?articleId=42234&publicid=395#

When it comes to health and managing your weight, "going on a diet” is one of the worst things you can do. That’s because most diets are all about what you CANNOT eat rather than what you should eat. And it turns out you can eat just about anything if you understand a few important things about nutrition. That’s what Dr. Sarah Ballantyne is here to reveal. She is author of the book, Nutrivore: The Radical New Science for Getting the Nutrients You Need from the Food You Eat (https://amzn.to/4cREoPN).

You may hate rats but they happen to be very interesting, adaptable and crafty creatures. They basically go wherever humans go (with one interesting exception). Rats are vilified all over the world, but is it all warranted? Are they as horrible as people think? Listen to my guest Joe Shute. He is author of a book called Stowaway: The Disreputable Exploits of the Rat (https://amzn.to/3WiYzPl). He explains rats like nobody else. Listen and you may have some new respect for these rodents even if they totally creep you out. 

In kindergarten, you probably sat in a circle much of the time. There is good reason to believe that would be the best way to conduct most meetings – in a circle. Listen and I’ll explain why. https://www.inc.com/jessica-stillman/how-to-make-your-team-more-collaborative.html

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In this episode, Xavier Bonilla has a dialogue with Anthony Sattin about the history of Nomads on our planet. They discuss humans as naturally nomadic, Göbekli Tepe, Çatalhöyük and early settlements, Uruk and the epic of Gilgamesh, and domestication of horses. They talk about the Persian empire, Scythian empire, and nomadic identity. They discuss the impact of Islam, Chinggis Khan and the Mongol empire, Ottoman empire, Native Americans, future of nomads, and many more topics.

Anthony Sattin is a writer and broadcaster who has written a fiction and non-fiction works. He is a Fellow of the Royal Geographical Society, editorial advisor on Geographical Magazine, founder-member of Travel Intelligence and ASTENE (the Association for the Study of Travel in Egypt and the Near East). He is the author of the latest book, Nomads: The Wanderers who Shaped our World.

Website: https://www.anthonysattin.com/

The Olympics are in full-swing – but news of medals and victory are often overshadowed by controversies linked to contestants and politics. We’ve seen this already this year – but has the Olympics always been so political? Emma Kennedy sits down with David Goldblatt, author of The Games: A Global History of the Olympics.

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Written and presented by Emma Kennedy. Produced by Eliza Davis Beard. Audio production by Tom Taylor. Managing Editor Jacob Jarvis. Group Editor Andrew Harrison. Art by James Parrett. Music by Kenny Dickinson. THE BUNKER is a Podmasters Production

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Three of our favorite segments from the week, in case you missed them.

A hundred years of James Baldwin  (First) | Election integrity as a matter of national security (Starts at 27:50) | New York City etiquette rules (Starts at 57:35)

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Andrew Joseph, STAT's Europe correspondent, joins us to talk about his special report on the 40-year quest to develop the world's first malaria vaccines. We also cover the latest news in the biotech industry, including Sarepta Therapeutics' move to censor a patient video, data from a new Duchenne gene therapy, and a campaign by Mount Sinai to stifle debate about its controversial brain research following revelations made by a STAT investigation.