Latest Podcast Episode

137 Isaac Newton and the Cat Door

Popular legend holds that Isaac Newton invented not only calculus, but also the cat door. Unfortunately, this colorful legend is not supported by good evidence. Cats have been domesticated for thousands of years, with the oldest known domestic cat possibly […]



136 Durer’s Rhinoceros

For almost three hundred years Europeans were not entirely sure what rhinos looked like. The most popular image of the beast was a print made by Albrecht Durer in 1515, which shows an Indian rhinoceros as a plated, scaled, animal […]

135 Pad Thai, Nationalism, and Mandatory Hats

Pad Thai is now heavily associated with Thai cuisine, but it’s a relatively modern invention. Noodles were probably imported to Thailand via either China or Vietnam, and the style of cooking of the noodles seems to indicate that it stems […]


134 The Imaginary Islands of Benjamin Morrell

There’s no shortage of things on old maps that turned out to be fictional. Regions such as the Mountains of Kong or the continent of Lemuria dot antiquated maps, and the obviousness of their fictional nature seems quaint today. However, […]

133 Hachiko

A statue of a dog sits outside Shibuya station in downtown Tokyo. The statue commemorates Hachiko, an Akita who walked to and from the train station every day with his owner, Hidesaburo Ueno, a professor of agricultural science at Tokyo […]


132 Crystal King on Feast of Sorrow

Crystal King is the author of Feast of Sorrow, a novel about ancient Roman cooking that takes the first known cookbook as its inspiration. We talked about what it would have been like to go to a Roman dinner party, […]

131 Polyamory, Polygraphs, and Wonder Woman

Wonder Woman’s origin story is a fascinating one. Diana of Themyscira was created in 1940 by William Moulton Marston, a psychologist who helped invent the lie detector, worked for Universal Studios, and who lived in a menage-a-trois with his wife, […]


130 Human Mail

Sending human beings through the mail is not generally allowed, but plenty of people have tried it. The most notable person in US history to mail themselves is Henry “Box” Brown who escaped slavery in Virginia via a shipping company, […]

129 Phantom Time, the Dumbest Conspiracy Theory Ever

One of the most dramatic (and dumbest) conspiracy theories of all time is the Phantom Time Hypothesis, put forward by the conspiracy theorist Heriber Illig. They hypothesis states that almost three centurires of the Middle Ages, AD 614 to 911, […]


128 Quest For Thundercows

In 1910 the United States almost imported hippos as a meat animal. Had it done so, the US would have imported the single most dangerous large land animal on Earth and treated it like a cow. HR2361 also known as […]

127 Bummer and Lazarus, the San Francisco Superdogs

Bummer and Lazarus were a pair of stray dogs beloved of San Francisco in the 1860s. The two dogs were known for their exceptional rat-catching ability, and were a favorite topic of newspapers of the day. Nowadays the two dogs […]