METI: Existential Threat? Probably Yes

Today we go down the road a bit, thumbs out, to explore the rich history of hitchhiking. See omnystudio.com/listener for privacy information.

Few people have been more qualified to survive a plane crash alone in the Amazon for almost two weeks than Juliane Koepcke. Let’s hear her story.See omnystudio.com/listener for privacy information.

Arson investigation has changed a lot over the years. There is actual science available now, but the word still hasn't totally gotten out. Listen in today, and don't play with matches!See omnystudio.com/listener for privacy information.

It's common knowledge that famines are usually caused by major droughts: Rain doesn't fall, crops don't grow, and people go hungry. But recent research suggests that while weather may trigger famines, they may actually be more of a human-made catastrophe. Find out more in this classic episode.See omnystudio.com/listener for privacy information.

We think of estrogen and testosterone as the female and male sex hormones and they may seem kind of gross (is that just Josh?), but that simple understanding is way off. A magical biochemical dance between the two creates everything from bones to moods.See omnystudio.com/listener for privacy information.

Straitjackets aren't really a thing anymore unless you're watching a movie or TV show. Or in prison. That's the sad truth.See omnystudio.com/listener for privacy information.

The 70s were the decade of the woman in the US. America finally was coming around to the understanding women and men are equals and the government sponsored a conference to advance women’s rights. The opposition that arose changed the fabric of America.See omnystudio.com/listener for privacy information.

When Fort Knox was built in the 1930s to house America’s gold supply, it was billed as an impenetrable, impregnable, don’t-even-think-of-trying vault. But as the world has moved further away from gold, the stockpile’s lost a bit of its luster. Learn all about it in this classic episode.See omnystudio.com/listener for privacy information.

One of America’s most important ecosystems takes up more than half the state of Florida. It’s a river of grass, a cactus desert, and a saltwater bay all rolled into one. And there are alligators and crocodiles. And that’s just the beginning.See omnystudio.com/listener for privacy information.

What's the deal with knocking on wood? It's an action one takes to ensure good luck. Which doesn't exist. Yet we do it. Humans are funny that way.See omnystudio.com/listener for privacy information.