The World Is Full of Mysterious Holes

A year and a day ago, American political activist Charlie Kirk was murdered during a public debate at Utah Valley University. While his name was unfamiliar to many, he was a rising superstar in the world of U.S. conservatives. In the first chapter of this special two-part series, ... Show More

Since ancient times, human beings have known the sun can be dangerous. Too much exposure to its rays can burn and prematurely age the skin. In fact, the concept of sunscreen may be a non-human invention, as various types of animals coat themselves in protective layers of mud to s ... Show More

Even now in 2026, much of the world's oceans remain mysterious and thoroughly unexplored. Prompted by news from The Ocean Census, which has discovered thousands of new species (and hopes to discover a hundred thousand more), Ben, Matt, and Noel dive deep into the latest oceanogra ... Show More

If the world really is hollow, why have so many scientists covered up the evidence? Is it because the earth's interior holds the key to surviving an apocalypse? Or because it's home to an alien species. Or perhaps we've been living on the inside this whole time. Learn more about ... Show More

In this episode of Stuff to Blow Your Mind, Robert and Joe explore the science and history of sinkholes. How have these impressive geographic features impacted our world, and what can they reveal about the past? Learn more about your ad-choices at https://www.iheartpodcastnetwork ... Show More

What’s better than discovering a mysterious cavern? Discovering five!See omnystudio.com/listener for privacy information. 

One of the most bizarre stories to emerge from the cult radio show Coast to Coast AM – and that’s really saying something – isn’t about UFOs or bigfoot, but a mysterious hole in the ground with some very unusual properties. Top that, History Channel!See omnystudio.com/listener fo ... Show More

The Most Secret Places in the World - And the wild theories about what really happens inside. In the modern world, places are supposed to be accessible. People move freely around the country they live in and even between countries. However, the most interesting, fascinating and m ... Show More

<p>Geologists and biologists have recently realized that the planet’s oceans and coasts are littered with a unique type of ecosystem called blue holes, submerged sinkholes that were once dry caves. They are turning out to be weird and amazing places.</p><p> </p> Learn more about ... Show More

There’s a lost continent waiting to be explored, and it’s right below our feet. We’ll dig into the deep human relationship to the underground—and why we understand it from an instinctive point of view, but not so much from a physical one. (Hint: We’re afraid of the dark.) In an e ... Show More

From our planet's underwater caves to its ancient soils, there are entire worlds right beneath our feet. This hour, we explore the subterranean forces that shape our lives above the ground. Guests include cave diver Jill Heinerth, death care advocate Katrina Spade, soil scientist ... Show More

In this classic episode of Stuff to Blow Your Mind, Robert and Joe explore the science and history of sinkholes. How have these impressive geographic features impacted our world, and what can they reveal about the past? (originally published 1/19/2021) Learn more about your ad-ch ... Show More