In which even the most hated typeface in the history of desktop publishing has its defenders, and Ken isn't sure why he owns cargo shorts. Certificate #54861.

In which a flirty but forgotten Tin Pan Alley song leads to the first great moral panic in pop music history, and John sneakily borrows someone else's shanty town. Certificate #12960.

In which a state politician's lack of badminton equipment leads to the invention of the hottest sport of the 21st century, and Ken is slightly present. Certificate #42131.

In which researchers squabble for centuries about the secret ingredient that made one Cremonese craftsman the greatest musical instrument-maker of all time, and John seasons guitars under a bus. Certificate #36611.

In which a king agrees to hand over his seventh-best island in the hopes of creating a haven for his native Hawaiian language and culture, and Ken does not want to greet Zach. Certificate #43273.

In which the last universal physicist demonstrates to his students that ballpark estimates in math can be as powerful as precision, and John isn't sure if Romanians can count tomatoes. Certificate #46480.

In which an ill-advised utopian scheme to bypass Niagara Falls becomes America's first toxic waste catastrophe, and Ken knows the main thing that water does. Certificate #42025.

In which the great gourmet food of 19th-century "frolics" suddenly disappears from American menus, and John thinks humankind often looks to weasels. Certificate #32793.

In which the tragic death of a gorilla at the Cincinnati Zoo launches a tidal wave of viral content on social media, and Ken explains bad table manners as an accident of birth. Certificate #23616.

In which the most notorious convict in America attempts no fewer than four separate escapes from the Alcatraz of the Cumberland Mountains, and John would never disparage the banjo. Certificate #1746.