HISTORY
Pumice, ash and later pyroclastic material rapidly buried the city and sealed in many traces. Its famous human forms are plaster casts of voids left after bodies decomposed, not petrified victims.
Persistent ridge detail became searchable through standardized capture and card classification. Modern systems rank candidates quickly, but image quality and careful comparison still matter.
Ancient Tyrian purple required marine snails and laborious processing. Its scarcity made purple cloth a powerful display of rank and eventually a lasting symbol of royalty.
Reactive lime clasts in some Roman concrete release calcium when cracks admit water. New minerals can grow across the gap, adding a self-healing mechanism to its durability.
The seasonal year lasts about 365.2422 days, leaving a mismatch with a 365-day calendar. Leap days collect that difference and keep dates aligned with seasons.
The Great Pyramid was already ancient in Cleopatra's time; fewer years separate her from Apollo 11 than from its construction.
England's University of Oxford had already been teaching students for centuries before the Aztec Empire was even founded — a surprisingly old institution.
