Stuff You Should Know

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. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

As part of Black History Month, we wanted to share the little known story of the Freedom House Ambulance Service. Listen in to learn all about this seminal group of EMTs. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

In 2014, a young German man walked into an airport in Bulgaria with a flight booked, then suddenly ran out leaving all his posessions behind, never to be heard from again. This is the story of Lars Mittank. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Between 2007 and 2016, 17 disembodied feet - still wearing shoes - have washed ashore between Washington and British Columbia. What's behind the sudden influx of Vancouver's mystery feet? Find out in this classic episode. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Owning a home in the US is a way to pass wealth down from one generation to the next and lift families into a comfortable life down the road. But there have been barriers to buying homes that Black Americans have faced from the time of slavery to today. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

California is a pretty cool name. And the story about where it came from is even cooler. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Sacagawea was only 16 when she joined the Corps of Discovery. That is one seriously impressive teenager. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Despite tons of people using cotton swabs each day to clean the earwax from their ears, cerumen (as earwax is clinically known) is actually quite beneficial to the health of your ears - and even kind of ingenious as your body's defense goes. Learn more in this classic episode. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

The NAACP has long been one of the most robust and effective non-profits in the USA. And while it has faded a bit from its glory days, it still remains a vital cog in the battle for equality. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

In 1986 Cleveland released more than a million helium balloons at once! It didn’t go at all according to plan! Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

You know Groundhog Day – the holiday on February 2 when you wake up and have to go through the same day over and over again. It turns out the holiday has deep roots in a pagan past, and has survived in a surprisingly similar form. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Cultures around the world over the years have been inspired by, then repulsed, then inspired by maggots' ability to heal persistent wounds. We are in an inspired-by phase right now. Learn more in this classic episode. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

Humans have been stealing energy from flowing water for at least two thousand years. It wasn’t until the advent of electricity that things really got cookin’. All we need to do now is to work out the harmful environmental impacts of this green energy. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

How black is vantablack? About as black as you could imagine. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

The history of the KKK is rooted in hatred and racism, and it still is today. Learn all about these loathsome rednecks today. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

After newsreels captured the Hindenburg erupting in fire in 1937, the promising development of airship aviation was cut short. Today companies and militaries are taking another look at blimps and the unique qualities that may revive them. Learn all about it in this classic episode. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

In 2010 an eccentric art dealer hid a treasure chest with $2 million in valuables somewhere in the Rocky Mountains and published a poem with clues on where to find it. Hence began the most famous treasure hunt in modern times. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

If you think Necco Wafers are the most disgusting candy on the planet, you are not alone. But it turns out there’s a rich history behind those chalky discs that make them fascinating, if horrible. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

The Michelin Guide is an institution. But why does the famous tire manufacturer even put this restaurant guide out? Listen in to find out. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.

It was America's most famous family feud, but the history of the Hatfields vs the McCoys is fraught with bias and inaccuracies. Dig into a disagreement in 19th-century Appalachia that became a very big deal around the world, in this classic episode. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.