There is a question that sounds naive and turns out to open a real research problem: does everybody divide colours up the same way?
The physical answer is that the…
There is an assumption embedded in how nervous systems are usually described, and it comes from studying animals built like us.
The assumption is that a nervous system has a…
There is a class of behaviour that everybody performs, everybody recognises, nobody controls and nobody can explain, and yawning is the most conspicuous member of it.
It occurs in essentially…
Thickening means making a liquid resist flowing, and there are only a few ways to do that. Everything below is one of them, and every failure is that mechanism being…
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 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…