Number 418

Thu, 17 Sep 2026 13:47:10 -0700

‘Artificial leaf’ generates clean hydrogen from contaminated seawater

Scientists have designed a device that harvests sunlight to generate clean hydrogen from seawater and simultaneously degrades hydrazine, a highly toxic contaminant from industrial wastewater.

Is dark matter ’natural?’ Physicist puts the question to the test

Dark matter is one of the oldest open problems in physics. It makes up most of the matter in the universe and shapes how galaxies form and move, yet no one has ever directly detected it. Physicists have proposed dozens of candidates to explain it: exotic new particles, black holes formed moments after the Big Bang and more. With no direct detection to settle the question, researchers often fall back on a different test: not “is this candidate detected,” but “is this candidate natural?”

Number 417

Fri, 11 Sep 2026 13:58:10 -0700

When a company ‘believes’ something false that causes harm, who’s to blame?

A company does not have a mind the way a person does. So when a corporation is negligent, acting on a false belief it should have caught, responsibility has to land somewhere else. We need a way of conceptualizing this problem so that it does not lead to the unwanted result that no individual is ever to blame in cases of corporate negligence.

Oenology on A Reading List of Aperiodic Frequency

Number 418

Number 417