Sulla

Corybantian dance , the type of dance most likely danced on Gymnopedia festivals (image from Smith 's Dictionary of Antiquities ).

An illustration of Cantor's diagonal argument (in base 2) for the existence of uncountable sets . The sequence at the bottom cannot occur anywhere in the enumeration of sequences above.

Gasoline in a glass jar

A tulip, known as "the Viceroy" ( viseroij ), displayed in the 1637 Dutch catalogue Verzameling van een Meenigte Tulipaanen ("Collection of a Crowd of Tulips"). Its bulb was offered for sale for between 3,000 and 4,200 guilders (florins)…

Sulla marched two legions on Rome itself in 88 BCE — the first Roman general to do so — then posted proscription lists of enemies to be killed on sight, collected 4,700 names, and walked away from power voluntarily.

Gymnopaedia

At the Gymnopaedia, naked Spartan youths danced in full summer sun on the Spartan agora for days — a festival honoring the dead of Thyreatis. The audience was the entire citizen body.

Cantor's diagonal argument

Cantor showed in 1891 that the infinity of real numbers cannot be listed — proving it by constructing one number guaranteed to be missing from any list. Infinity has a size hierarchy; most people never heard it.

Gasoline

Thomas Midgley Jr. invented both leaded gasoline in 1921 and Freon in 1928 — one poisoned global blood lead levels for fifty years, one carved a hole in the ozone layer. One man, two planetary-scale mistakes.

Travis (chimpanzee)

Travis, a 200-pound chimpanzee raised as a human child in Stamford, Connecticut, mauled neighbor Charla Nash in 2009, leaving her without a face or hands. His owner called 911 mid-attack, saying: 'He's eating her.'

Bosco Ramos

Bosco, a black Labrador–rottweiler mix, was elected mayor of Sunol, California in 1981 over two human candidates — and held the role until his death in 1994, becoming the town's most beloved public figure.

Tulip mania

In 1637 Amsterdam, a single Semper Augustus tulip bulb sold for 10,000 guilders — enough to buy a canal house. The market collapsed in one week in February, leaving traders holding contracts for flowers that didn't exist.

Temple Grandin

Temple Grandin designed curved cattle chutes that now move a third of U.S. livestock more calmly — by imagining the animal's eye-level view of shadows, dead ends, and unexpected sounds. She drew the first blueprints at her aunt's Colorado ranch.

Angora rabbit

Ottoman sultans kept Angora rabbits as living luxury objects in the Topkapi Palace; their wool — harvested monthly by hand — was spun into garments reserved for imperial gift-giving.