Top 5

The Rubin Observatory is now live and already spotting failed supernovas, interstellar visitors, and building-sized asteroids. Big-data astronomy just got real.

Beijing showed up to the summit with a grand strategic concept. Trump showed up looking for deals. The asymmetry tells you everything about where this relationship is heading.

One of climate science's biggest open mysteries just got solved. A 'triple whammy' of factors explains Antarctica's historic sea ice collapse — and the picture isn't reassuring.

The world's biggest preprint server will now ban you for a year if your paper cites sources that don't exist. AI hallucinations just got real consequences in academia.

The testosterone obsession connects MAGA masculinity, RFK's health crusade, and a billion-dollar supplement industry. This NYT Magazine piece maps how a hormone became an ideology.