In 1640, what gas became the first gas to be called a gas?
Soon after it was formed, Venus might have been covered in a liquid ocean of what compound that now makes up most of its atmosphere instead?
In 1835, a French inventor accidentally discovered dry ice, which is just the solid version of what greenhouse gas?
This year, for some reason, the Spanish actress Charo laid claim to inventing what fad dance?
Dr. Evil and the Undercover Brother are two period-specific characters who have (sort of) performed what dance on film?
Two Spanish dudes formed Los Del Rio in 1962, then waited 34 years to make what dance mega-hit with a weirdly arm-centric dance?
The part of a zipper that you hold on to and move up and down shares what name with a fast food item?
That graphical element you use to pick a time cue in a YouTube video has what name that's also a kind of burger?
Baseball Hall of Famer Chief Bender is the purported inventor of what breaking pitch that's also a snack-size sammich?
The Susquehanna River makes up about half the freshwater inflow of what bay?
Every river on the western half of the Delmarva Peninsula drains into what nation's-largest estuary?
Baltimore, D.C., and Richmond: All upstream of what bay that anagrams to HA, PEE CAKES?
A graduate of Promenade Hall Callers College—and, indeed, a pro caller for 45 years now—Tony Oxendine is GOAT level in what social pastime?
That makes sense: The French/English folk-dance mashup called the quadrille is a precursor of what American thing?
If a guy with a mic just told you to allemande or do-si-do... what exactly the hell are you doing?