Autumn colour is usually described as leaves changing colour, which frames it as something the leaf does. That is only half right, and the half that is wrong is the…
Hiccups are so ordinary that almost nobody asks what they are for. Everyone gets them, they arrive unbidden, they are mildly annoying, and they go away.
But consider what is…
Before anyone thought to define units against physical constants, they were defined against whatever was to hand — literally. Most of those origins are still buried in the words. Here…
Time feels like the most objective thing we measure, and the system we use to measure it is almost entirely a set of historical accidents. Here are twelve of them.…
Ice is the only common solid that behaves this way. Glass is smooth and you do not slide on it. Polished stone is smooth and you do not slide on…
The honeycomb is probably the most cited example of mathematics in nature. Rows of near-identical hexagonal cells, walls meeting at consistent angles, packed with no wasted space — and produced…