Most descriptions of the ocean concern its surface, which is understandable, since that is the part anybody sees.
The surface is a thin film on top of something much larger.…
Maya Linton
There is an assumption that things used routinely are understood, and it does not hold in general.
A great many effective interventions were established empirically — somebody noticed that something…
The single variable that explains most of what you see is how thick the lava was. Runny lava spreads out and builds gentle slopes; thick lava traps gas, moves barely…
Everything below comes from one thing: the axis the Earth spins on is not perpendicular to the plane it orbits in. Every seasonal phenomenon anywhere is a consequence of that…
The distinction that organises the whole subject is between comparing and measuring. A balance compares; a scale measures a force. Almost every difference between weighing devices follows from which one…
The useful way to read any station is to work out which of two plans it is, then look at how the roof is held up. Those two facts explain…