Navigation problems divide into two parts, and confusing them is the reason this subject seems simpler than it is.
The first is knowing which way you are facing. A compass…
Maya Linton
Source: Wikipedia
Writing is rarer than it looks.
Almost every script in use today descends from a small number of original inventions, spreading and adapting rather than being independently devised. Real…
Most visible human variation is complicated. Height, skin tone, hair texture and facial structure each involve many genes contributing small effects, which is why they vary continuously rather than falling…
The most informative thing in any orchard is the spacing, because it tells you how big the trees are meant to get and how the fruit is meant to come…
The coach differs from every other mode in one respect: it travels through the landscape at ground level, stopping at ordinary places, rather than passing over or under it. Here…
The useful frame is that you are not protecting the fruit. You are making conditions that the organisms which would spoil it cannot tolerate, and there are only about five…