The Silurian Hypothesis

Whistling is pretty cool when you think about it because it can mean many things, from simple happy tunes to legit communication. Learn all about this ubiquitous skill today. See omnystudio.com/listener for privacy information.

Long before slide rulers and pocket protectors, civilizations across the world used their noggins to build some impressive structures. Almost all have crumbled to ruins over the millennium, but thanks to the earliest tourists, we admire them still today. Explore some of them with Josh and Chuck in this classic episode.See omnystudio.com/listener for privacy information.

Wikipedia changed the world. Before it came along, you had to go to the library to get the answers you sought. And you and your friends had to just agree to disagree on facts. And as the internet grew and commercialized, Wikipedia remains free and open.See omnystudio.com/listener for privacy information.

Those armrests in the middle of benches aren’t just for your comfort, they’re intended to keep the homeless from laying on them. Cities are filled with these mean-spirited inconveniences. But who’s to say how a person should use a bench?See omnystudio.com/listener for privacy information.

In almost every part of the world, in some form or fashion, widows have things harder than they did when their spouses were alive. In some places it means they pay higher taxes, in others it means they’re ostracized to live on the margins of society.See omnystudio.com/listener for privacy information.

About 5,300 years ago a Copper Age shepherd was murdered. He just happened to die in a place where his body was so well preserved that gave researchers an actual shot at determining the course of his final day on Earth. Josh and Chuck take you through their reconstruction in this classic episode.See omnystudio.com/listener for privacy information.

Today we take to the friendly skies to detail the fascinating history of air travel. From planes with piano bars and lounges to the current no frills varieties. See omnystudio.com/listener for privacy information.

The peace sign is one of the most globally recognized symbols around today, but it’s only a few decades old. And it wasn’t the hippies who created it, it was a group of Brits dedicated to nuclear disarmament in the 50s.See omnystudio.com/listener for privacy information.

When we think of an abused spouse we tend to think of horrific physical or emotional violence. But over the last decade or so, it’s become clear that’s only a symptom – that domestic abuse is in fact an all-consuming form of interpersonal terrorism. See omnystudio.com/listener for privacy information.

It's pretty obvious something's gone wrong when you get a sunburn, but did you know a tan means you've damaged your DNA? Dive into the three Ss of summer and learn all about how to protect yourself from the sun.See omnystudio.com/listener for privacy information.