The Cobra Effect - a particularly extreme form of unintended consequences - isn't limited to India and Vietnam. In China, the technically successful Four Pests eradication campaign led to tremendous ecological disaster, as the mass murder of sparrows led to a plague of ravenous locusts. In part two of this week's two part episode, Ben, Noel and Max explore what went wrong, how it affected later generations, and what the Cobra Effect can teach us about unforeseen consequences.

The Cobra Effect, Part 2: Four Pests and a Disastrous Success

History is beautiful, brutal and, often, ridiculous. Join Ben Bowlin and Noel Brown as they dive into some of the weirdest stories from across the span of human civilization in Ridiculous History, a podcast by iHeartRadio.

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If you described the concept of a roller coaster to an alien, they'd probably be baffled: Why on Earth are humans purposely recreated the sensation of falling, flying and -- quite possibly -- feeling close to death? In the first part of this special two-part series, the guys explore the origin story of modern roller coasters, from the old days of "Russian Mountains" to an amusement arms race that continues today: the ongoing quest to build the biggest, highest, fastest rides on the planet. See omnystudio.com/listener for privacy information.

A History of Roller Coasters, Part One: Early Ups and Downs

In the mid-19th century, London was literally filling with corpses. When the city was in the grips of a cholera epidemic, the already-overfilled cemetaries couldn't handle the extra bodies. So when there's literally no room in the soil for another dead body, what's a city to do? To the creators of the London Necropolis Railway, the answer was simple -- build a train for the dead. Tune in to learn some grisly, ridiculous history with Ben and Noel. See omnystudio.com/listener for privacy information.

CLASSIC: London Made a Train for the Dead

In a burst of meta-humor, the Encyclopædia Britannica defines encyclopædia as "reference work that contains information on all branches of knowledge or that treats a particular branch of knowledge in a comprehensive manner." It's high praise -- but if there's any single book that's earned the right to describe itself this way, it's this one. Tune in as Ben, Noel and Max delve into the history of one of the world's most famous reference works (and check out our earlier episode on the Oxford English Dictionary, as well). See omnystudio.com/listener for privacy information.

The Page-turning Evolution of the Encyclopædia Britannica

It's tangy. It's salty. It's sweet. It's unctuous... but what exactly is Worcestershire sauce? Join Ben, Noel and Max on their continuing condiment journey as they explore the bizarre origin story of one of the world's most famous (and, arguably, strangest) sauces in today's episode. See omnystudio.com/listener for privacy information.

A Ridiculous History of Worcestershire Sauce

Today author Roald Dahl is best-known for his prolific writing career -- but, as it turns out, he lived an entirely different life before he ever put pen to paper to create children's stories. Learn more about Roald Dahl's earlier life as a fighter ace, a legendary ladies man, and a World War II-era spy (seriously, like a real-life James Bond!) in this classic episode. See omnystudio.com/listener for privacy information.

The Cobra Effect, Part 2: Four Pests and a Disastrous Success

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