ฮฝ octantis: astronomers discover a tight binary star system with a lone exoplanet wedged in the middle
{sum free sets}: Cambridge graduate student proves an conjecture of Paul Erdลs on the limits of the additive property—via Damn Interesting
gorgoneion: the backstory of Medusa market instability: complaining that negotiations have stalled, Trump threatens to impose a fifty-percent tariff on EU exports to the US
ambigram: more invertible messages—made by impossible letters (see previously here and here)
the old, old, very old man: the sudden death of super-centenarian Tom Parr in 1635 illuminates our long quest for longevity—see also
marked decline: the precipitous drop in the use of semicolons—with a quiz to celebrate its proper placement
urban renewal: arborists are planting giant sequoia (previously) in blighted Detroit neighbourhoods—via Kottke
pandemonium: when the pantheon of gods and goddesses came into the world, they already had company with a multiplicity of daemons acting through human agents
exchange programme: US Department of Homeland Security revokes Harvard’s ability to enrol foreign students
brown dwarf: in the distant past, Jupiter was nearly twice its present size with a much stronger magnetic field, revealed by the orbital dynamics of its constellation of satellites—see previously
