There is a piece of physics that almost everybody half-knows and that is more interesting stated precisely.
The half-known version is that things fall faster and faster. That is true…
Maya Linton
This is not about what to take. It is about what a bag becomes once it has been opened and closed thirty times, which is a separate and less discussed…
Ice does two things to a landscape: it removes material from where it flows and deposits it where it stops. Almost every feature below is one of those two, and…
Buffer time is insurance, and like any insurance the right amount depends on what the loss would be rather than on how likely it is. Here are ten considerations that…
Two materials are held apart in a state where one wants to give up electrons and the other wants to take them, and the separation is the entire trick. Here…
There is a picture most people have of a watermill that misses the part that mattered.
The picture is a wheel turning in a river, driven by the current —…