In which the Yoruba people of Nigeria create a new kind of "speech surrogacy" for news and storytelling using a versatile percussion section, and John only needs two pedals to get to Sounds-Like-Garbage-Land. Certificate #51913.

In which a polar expedition builds a massive RV to road-trip around Antarctica but brings the wrong tires, and Ken wonders if admirals like sexy calendars. Certificate #23408.

In which the earliest discoverers of electricity disagree on whether it helps flowers, turnips, and myrtle shrubs to grow, and John punishes himself with sprouts. Certificate #27338.

In which a clue-filled dead body appears on a beach in Adelaide, Australia, sparking a tantalizing 75-year mystery, and Ken is not a team of seventh graders. Certificate #35821.

In which the collapse of the video rental industry sends one valuable and eccentric archive to an obscure and disaster-plagued town in western Sicily, and E. coli is no match for John. Certificate #43318.

In which a mysterious World War II inscription marries image and text to create the modern meme, and Ken does not think gangrenous limbs are a meme. Certificate #25622.

In which the bountiful gifts of American advice columnists include a now-ubiquitious happy afterlife for pets, and John might lose a swordfight because he's too heavy for a chandelier. Certificate #29810.

In which a self-crowned prince founds his own nation on a tiny piece of concrete in the North Sea, complete with commando raids, and Ken is only in favor of 3-D awards. Certificate #6611.

In which a village pastime for Sussex dairymaids gets urbanized into an exciting neighborhood pick-up sport in American inner cities, and John wants to pick the bittle up. Certificate #13472.

In which attempts to replace petrochemical plastic with corn and sawdust face fatal challenges of scale and efficiency, and Ken has never made a Prius. Certificate #32944.

In which the influence of spinet pianos and telegraph keys produces a satisfying new device interface for the electric age, and John thinks aliens just want a cuddle. Certificate #42007.

In which the development of guardrail and concrete divider technology makes highway driving massively safer over the decades, and Ken lies under oath in a deposition. Certificate #40991.

In which twenty-four bishops refuse to open the secret prophecies that will save Britain from war and banditry, and John wants to be called "Dicebox." Certificate #49596.

In which car registration numbers become modes for personalized creative expression and eventually a multimillion-dollar commodity, and Ken does not say "auto." Certificate #37808.

In which centuries of inaccurate illustrations of our planet are abruptly upended by satellites and awestruck astronauts, and John never drew spaceships, just Japanese fighter planes. Certificate #35817.

In which budget-conscious Swedes rearrange American ideas about nutritious eating, and Ken is pretty sure M&Ms are not getting smaller. Certificate #54063.

In which we celebrate 167 years of Americans being able to claim any island they like as long as it has enough bird poop on it, and John thinks you can dip a pole in liberty. Certificate #39867.

In which a remote part of Idaho solves its beaver dam problem with some surplus parachutes and an even more remote part of Idaho, and Ken applies the transitive property to mules and culverts. Certificate #31297.

In which German health nuts give the world the idea of social nude recreation before the Nazis can tell them not to, and John thinks of something that is better than itching. Certificate #53668.

In which the ponds of New England become the wellspring of a new worldwide web of perishable foods, and Ken learns that gum is a forest treat. Certificate #23725.

In which the estate of the century's greatest scientist becomes a $200 million enterprise even as his brain tissue languishes in a cider box, and John compares it to pastrami. Certificate #21917.

In which a ski bum with dad jokes explores new frontiers of film distribution and extreme sports, and Ken is a water machine. Certificate #48941.

In which the rift between two Communist dictators leads to a blooming of mariachi culture in the fertile soil of the Balkans, and John is baffled by Vietnamese karaoke. Certificate #46465.

In which the smartest people in the world bloom early but often struggle to live up that promise later in life, and Ken's phone thinks he lives at the zoo. Certificate #50285.

In which a late-night Christmas party in a West Point barracks gets out of hand, almost changing the course of the Civil War, and John is not anti-Julius. Certificate #32683. This episode is sponsored by Squarespace: Head to https://www.squarespace.com/omnibus to save 10% off your first purchase of a website or domain using code OMNIBUS.