From Christian calendars and the medieval evidence for seasonal folklore to today’s costumes, candy, films, charity collections and public festivals: a history of Halloween as a changing, shared celebration. Explore the story. Illustrated …
From the modern race’s invention in the 1890s to the ratified sub-two-hour men’s marathon in 2026: Olympic champions, women’s fight for inclusion, wheelchair racing, the city-marathon boom, record progression, technology and the culture of…
From Llull's combinatorial wheels and Leibniz's calculus of reasoning to today's large language models: ideas, programs, machines, games, people, companies and the policy around them. Moments are tagged (symbolic AI, machine learning, neur…
Three hours of syslog from web-1, web-2, db-1 and backup-1, with the investigation on top: the cause, the outage and what the on-call engineer did. A made-up incident for the logs video.
Earth's history on one line, from its formation to a single second in 1969. Eons and eras are durations in the colours of the International Chronostratigraphic Chart; times are exact offsets from 2000 CE, shown in millions of years.
The legendarium from the Years of the Trees to the Fourth Age, in each Age's own reckoning (F.A., S.A., T.A., Fo.A.). Each event is tagged by the book that tells it; First Age years come from Tolkien's later annals, and the War of the Ring…
From the first shots of the Revolution to the twenty-first century: wars, amendments, discoveries and the movements that changed who the rights in the founding documents applied to. How to read it. Chapter headings mark the eras. Wars and …
The wizarding world from the founding of Hogwarts to the Cursed Child: the seven novels, the Fantastic Beasts films, the play, the companion books and Wizarding World writing, and the games, in calendar dates. Moments are tagged and colore…
From Frege's Begriffsschrift and Russell's theory of types to the lambda calculus, Curry–Howard, ML and Haskell, dependent types and proof assistants, and functional ideas in mainstream languages. Moments are tagged (type theory, logic, la…
From the Ishango bone to formalized proofs: arithmetic, geometry, algebra, analysis, probability, logic and topology across Babylonian, Egyptian, Greek, Indian, Chinese, Islamic and European mathematics and beyond. Moments are tagged by ar…
From counting boards and the first algorithms to deep learning: the theory, machines, languages, algorithms, systems, networks, software practice, security and AI that make up computer science, in calendar dates. Moments are tagged and col…
The Halo universe from the Precursors to Zeta Halo: the games, novels, comics, and the live-action Forward Unto Dawn and Nightfall, in their own calendar dates. Moments are tagged and colored by the medium that tells them; eras are shown a…