November 2025

Fei-Fei Li’s World Labs speeds up the world model race with Marble, its first commercial product

November 12, 2025
Startups like Decart and Odyssey have released free demos, and Google’s Genie is still in limited research preview. Marble differs from these — and even World Labs’s own real-time model, RTFM — because it creates persistent, downloadable 3D environments rather than generating worlds on-the-fly as you explore. This, the company says, results in less morphing or inconsistency, and lets users export worlds as Gaussian splats, meshes or videos.

The Download: how to survive a conspiracy theory, and moldy cities

November 12, 2025
This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. What it’s like to be in the middle of a conspiracy theory (according to a conspiracy theory expert) —Mike Rothschild is a journalist and an expert on the growth and impact of conspiracy…