Stuff You Should Know

Stuff You Should Know Podcast

If you've ever wanted to know about champagne, satanism, the Stonewall Uprising, chaos theory, LSD, El Nino, true crime and Rosa Parks, then look no further. Josh and Chuck have you covered.
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Episode's summary

This episode provides a detailed anatomy lesson on the human heart, covering its biological mechanics, structure, and vital importance. The hosts explore how blood flows through the heart's chambers and vessels, the electrical nature of heartbeats driven by pacemaker cells, and the role of electrolytes in cardiac function. The discussion further delves into various cardiac conditions, differentiating between circulatory issues like heart attacks and electrical malfunctions like cardiac arrest. Finally, the episode examines medical advancements, including the development of pacemakers and the history of artificial heart technology.

Chapters

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Highlights

In fact, heart disease is, I think, the leading cause of death in the U.S.

00:05:50 · The host provides a sobering statistic regarding the prevalence and impact of heart disease in America.

The lub and the dub are the sounds of those one-way valves closing.

00:13:22 · The speaker corrects a common misconception about what actually produces the characteristic sound of a heartbeat.

a heart attack is a circulation problem because blood flow to part of the heart is blocked. Cardiac arrest, I thought that was the exact same. That's an electrical malfunction where the heart just suddenly stops beating.

00:41:10 · The hosts clarify the fundamental difference between a circulatory issue (heart attack) and an electrical issue (cardiac arrest).

They are literal electronic devices that keep your heart beating like it should or prevent it rather, I guess, from beating abnormally.

00:45:14 · The speaker describes the fundamental function and composition of a pacemaker.

The original Jarvik 7, that power unit, was the size and weight of a full-size refrigerator.

00:50:38 · The host highlights the massive scale of early artificial heart technology compared to modern devices.

Episodes

3743-

Ba-Dum-Bum Goes Your Heart!

This episode provides a detailed anatomy lesson on the human heart, covering its biological mechanics, structure, and vital importance. The hosts explore how blood flows through the heart's chambers and vessels, the electrical nature of heartbeats driven by pacemaker cells, and the role of electrolytes in cardiac function. The discussion further delves into various cardiac conditions, differentiating between circulatory issues like heart attacks and electrical malfunctions like cardiac arrest. Finally, the episode examines medical advancements, including the development of pacemakers and the history of artificial heart technology.

03 Nov 2026
3742-

Selects: Salem Witchcraft Trials: More Bonkers Than You Know

This episode explores the historical context and escalation of the Salem Witch Trials, examining how social tensions, land disputes, and a litigious Puritan culture fueled mass hysteria. The discussion details the role of the Mather family, the targeting of marginalized individuals, and the introduction of spectral evidence that led to widespread executions. The episode also delves into the brutal realities of the era, including the horrific conditions in Salem jails and the execution of Giles Corey. Additionally, the episode features trailers for upcoming series like 'The Builders' and 'Curse of Miss America,' alongside listener mail and promotional announcements.

31 Oct 2026
3741-

The SYSK Annual Halloween Freaky Spooktacular 2026!

The hosts of Stuff You Should Know continue their annual Halloween tradition with dramatized readings of classic spooky stories. The episode begins with W.W. Jacobs' 'The Monkey's Paw,' following a family whose attempt to manipulate fate through a magical talisman leads to tragic consequences and a chilling second wish. The episode then transitions into a reading of 'August Heat,' exploring an eerie coincidence between an artist and a stone carver. The hosts conclude by discussing the themes of irony, ambiguity, and modern parallels to AI alignment.

29 Oct 2026
3740-

Short Stuff: The Enfield Monster

In this episode of The Short Stuff, hosts Josh and Chuck explore the legend of the Enfield Monster, a cryptid reported in Illinois in 1973. The story details sightings by local residents, including Henry McDaniel, who described a strange, three-legged creature with gray skin and red eyes that he even attempted to shoot. The hosts discuss the various eyewitness accounts, the physical evidence found at the scene like claw marks and shredded shoes, and the subsequent influx of investigators and hunters to the small town. They conclude by weighing the possibility of a supernatural entity against more mundane explanations, such as an escaped kangaroo.

28 Oct 2026
3739-

(Don't Fear) The (Grim) Reaper

The hosts explore various cultural personifications of death, distinguishing between 'psychopomps' who guide souls and 'collectors' who cause death. The discussion covers figures such as the Greek Thanatos, Egyptian Anubis, Azrael, Yama, and the Valkyries, while also examining the historical impact of the Black Death and the artistic concept of the 'dance macabre.' The episode further delves into the symbolism of the Grim Reaper—including the scythe and black cloak—and its presence in pop culture, from Ingmar Bergman's The Seventh Seal to Emily Dickinson's poetry. The episode concludes with a look at modern cinematic references and a humorous listener message.

27 Oct 2026