In which Ken and John struggle to imagine four-dimensional space with the same ease that the inventor of the pitching machine once could. Certificate #28910.
In which a nationwide panic over "stranger danger" turns regional dairies into activists for missing children, and John likes when things are "de minimis." Certificate #25468.
In which a panel of concerned atomic scientists quantify the dangers of the nuclear age with a timely visual aid, and John's mother has a favorite fact about Benjamin Franklin. Certificate #26973.
In which a playful-looking but delicate little species is unable to thrive anywhere but its 11-foot wide home near Death Valley, and Ken witnesses a jellyfish tragedy. Certificate #41036.
In which $300 million in 2022 money is unwisely spent on the world's first real-world cryptocurrency transaction, and Ken explains why a bro should not have an army. Certificate #11904.
In which a series of largely male and largely odd people over the centuries start digging something and just don't stop, and Ken explains how Canadian lakes are named. Certificate #39623.
In which the dead center of the Pacific Ocean is revealed to be the home of microplastics, sunken spacecraft, and possibly giant sea monsters, and John refuses to leave his keyboard player in the desert. Certificate #49394.
In which an Australian national treasure and a Chinese resort race to revive the most disastrous brand in maritime history, and Ken is fed up with the sulfurous steel of Belfast. Certificate #50231.
In which the discovery of quantum mechanics leads inevitably to the reappearance of a 30,000-year-old warrior god from a lost continent, and Ken proposes missionaries for silverware. Certificate #27324.
In which an Irish immigrant pretending to be an old lady becomes a star of the American labor movement, and Ken ponders the death of middle initials. Certificate #12952.
In which a socialist preacher invents a tricky birth control technique he calls "male continence," leading directly to the lazy Susan and the assassination of an American president. Certificate #34322.
In which Ken blames a crucial bit of fascist iconography on the most successful magazine premium in American history, and John knows the lyrics to "Alaska's Flag" but refuses to sing it. Certificate #37863.
In which the gruesome deaths in early 1960s teen ballads are variously blamed on capitalism, Marlon Brando, chastity, and giant clams. Certificate #34312.
In which a Czech astronomer is hailed as the hero of 1973, only to have his discovery flame out by not flaming out. Then he gets very seasick on a cruise. Certificate #31644
In which John shares the soothing geographic mantra that has got him where he is today: sitting in a bunker teaching 30th-century cockroach-people how to tell medieval Central European principalities apart. Certificate #18088.
In which an upstart British television producer finally answers that age-old question: why don't more classic sitcoms star Adolf Hitler? Certificate #42615.
In which QANTAS begins a top-secret 33-hour nonstop flight between Australia and Ceylon at the height of World War II, right under the noses of the Empire of Japan. Certificate #12248.