One day does not permit a shortened version of a proper visit. It permits one thing done properly and a great deal of walking between, and accepting that at the…
There is a particular kind of historical blindness that comes from something becoming cheap.
Salt now costs almost nothing, is available everywhere, and is thought about mainly as a seasoning.…
Face recognition feels like a single ability that everybody has, working roughly the same way in everybody.
That impression is wrong in the way most impressions about internal experience are…
There is a fact about the past that is difficult to hold onto because it contradicts something we do daily without thinking.
For most of human history, almost nobody had…
There is a constraint that shapes plant biology more than almost anything else, and it is easy to overlook because it is so obvious.
Plants cannot move. Not slightly limited…
There is a fact almost everybody knows and almost nobody can explain, which makes it a useful place to start.
The Moon presents the same face to Earth continuously. The…