Learning & Knowledge Work

Open Thread 454 invites reader discussion and posts updates on meetups, translated Fatima documents, book reviews and Physicians for AI Safety.

• Halt Mal Team
• October 6, 2026

A 2018 CSES handbook PDF presents a structured guide to competitive programming; the supplied source does not establish a new release or update.

• Halt Mal Team
• October 6, 2026

Vals AI reports two calculated candidates for room-temperature magnetic semiconductors, including a proposed compound not yet made.

• Halt Mal Team
• October 6, 2026

Review of ‘Neanderthals Among Us’ by Peter Sahlins, exploring the 170-year history of Neanderthal science, racial science, and popular culture representations.

• Halt Mal Team
• October 5, 2026

NASA’s October 3, 2026 Astronomy Picture of the Day revisits a 2018 Curiosity rover selfie at Vera Rubin Ridge on Mars.

• Halt Mal Team
• October 5, 2026

NASA’s Oct. 4, 2026, astronomy picture explains a 2018 New Jersey image showing at least five supernumerary rainbows.

• Halt Mal Team
• October 4, 2026

Starting Oct. 1, arXiv limits submitters to two papers per month and three active submissions, citing record volume and moderator workload.

• Halt Mal Team
• October 2, 2026

NASA’s Oct. 1 Astronomy Picture of the Day features a composite of the Harvest Moon rising above Sicily, with Mount Etna’s ash and gas in the background.

• Halt Mal Team
• October 1, 2026

NASA’s Curiosity rover identified unusual disc-shaped mineral features and plans to drill for detailed analysis, marking a significant step in Martian mineralogy.

• Halt Mal Team
• October 1, 2026

Astral Codex Ten’s Open Thread 453 shares new college meetups, an AI grant program of up to $10 million and a candidate response link.

• Halt Mal Team
• September 30, 2026