Travel in times
Travelintimes.org is a historic online journey planner, created at the University of Cambridge, that allows users to plan journeys around England and Wales at three dates in time, c.1680, c.1830 and in 1911.
The website allows users to explore the nature of travel in the past and how it improved over the period 1670 to 1911, based on the latest historical research.
The size of Stephenson 2-18 (the largest known star) compared to Earth
Train Jazz
Every dot is a real subway train. Eight hundred of them, give or take, form a small jazz combo (walking bass, piano, sax, vibes, brushes) that has been playing without pause for over a hundred years. On the platforms they are hot, screaming, full of complaint. This is the music inside the noise.
An amazing cardistry demonstration
Tech Support Cheat Sheet
An oldie but a goodie.