There is a reason water clocks were difficult and sand timers were easy, and it comes down to a surprising difference between liquids and piles of small solid grains.
A…
There is a process going on beneath almost every lawn, field and garden that is too slow to see and large enough to reshape the ground.
Earthworms eat their way…
There is a category of everyday observation that everybody has seen and that turns out to have no settled explanation, and moths around a light are among the clearest examples.…
There is an image that makes most people wince the first time they see it: a hammer driving nails into a horse's foot.
The reaction is reasonable, and it rests…
There is a small object that lines a great many old roads and is almost never looked at: a short stone or cast-iron post at the verge, carrying a name…
There is a type of building standing in fields, farmyards and the grounds of old houses that most people pass without knowing what it was for.
It is frequently round…