The useful question at any market is who it exists to serve, because the answer determines the hour it operates, its position in a town and whether you are a…
A treeline is not one phenomenon. It is wherever a particular limiting factor becomes severe enough, and the factor differs entirely between a mountain, a bog, a coast and a…
The principle is simple: spoilage organisms need water, and removing it stops them. Everything interesting about drying is what else happens while the water is leaving. Here are sixteen.
1.…
There is an old puzzle about a ship whose planks are replaced one at a time until none of the original timber remains, and the question of whether it is…
There is a misunderstanding built into how these plants are usually described, and correcting it makes everything else about them clearer.
They are not predators in the sense of animals…
There is a category of historical evidence that is systematically misleading in a way nobody notices, and early photographs are the clearest case.
A photograph feels like direct evidence. It…