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The FAA ordered a nationwide ground stop for departing flights on Friday. The order lasted more than five hours and brought U.S. air traffic to a standstill.

Ukrainian drone strikes hit nine Russian oil refineries in 13 days, knocking out 36% of Russia’s oil refining capacity. The blitz marks a significant escalation in attacks on Russian energy infrastructure.

The FAA lifted a National Ground Stop at 01:19 UTC, according to its advisories database. No further details about the reason for the stoppage or affected flights were included in the advisory.

Amtrak’s booking system experienced a network outage that coincided with a nationwide FAA ground stop, causing major issues for users. The company said its booking system is now returning to normal.

A retrospective traces 3Com’s rise from Bob Metcalfe’s networking innovations through the dot-com boom and iconic 3C509 network card, explaining how the once-dominant brand faded rather than exited with fanfare. Despite its early influence, 3Com was ultimately absorbed into HP, ending its run as an independent networking company.

A new Show HN project offers a live and replayable map of U.S. air traffic during the FAA’s nationwide ground stop on Nov. 13, 2026. It visualizes flights airborne compared with a normal Friday, along with departures and the resulting backlog at major airports.

Anthropic has upgraded Claude Code Projects so it can run parallel AI workers hands-free. The Projects coordinator is now proactive, answering questions and posting thread status updates directly in chat.

Readers discuss how many local and free music players fail at shuffle, often replaying songs in the same predictable order or looping a small subset instead of randomizing the full library. Complaints also cover USB/car players with broken shuffle, crashes, and missing subdirectory support, while some users contrast this with better implementations like PlexAmp and Amperfy.

A developer got Zed’s remote development feature working with a FreeBSD machine by tricking the editor into accepting the unsupported setup. The workaround hinged on a 768-byte buffer, highlighting the quirks of running Zed’s remote server outside its officially supported platforms.

Unsloth has released a Dynamic v3.1 update for its Qwen3.8-27B quantizations. The accompanying guide covers how to run Qwen3.8 quantized models, including the 27B version, on a local setup.

An Nvidia director sold nearly $1 billion in stock weeks before a scandal involving Jensen Huang. Huang has stepped down as CEO after reports emerged of a second extramarital relationship with Nvidia executive Kimberly Powell.

Researchers studying Asian elephants have found that population declines are leaving the highly social animals increasingly isolated and their communities fractured. They warn that crossing a social “tipping point” could be detrimental to the species’ future.

The FAA has issued a national ground stop, according to its advisories database. No further details, including the cause or scope, were provided in the advisory description.

Nik Ivanov introduces significant hardware upgrades to this open-source project, including a new ESP32-based controller, improved motor performance, and a custom renderer for detailed image plotting. The guide covers the assembly process, firmware setup, and calibration steps necessary to achieve reliable, high-quality wall drawings.

Researchers have used AI to unlock Kurt Gödel’s 1,009 pages of densely written notebooks, much of it in an obsolete shorthand. The material is said to contain hundreds of previously inaccessible proved theorems.

A 1960 article that forecast doomsday for Friday, 13 November 2026 is being revisited as an example of how extrapolating past trends can oversimplify complex systems. Readers note that demographic projections now point toward peak population and decline in many industrialized nations, shifting concerns from overpopulation to economic dependence on growth. The discussion debates whether population pressure or political and distributional choices drive crises, and whether economies must be restructured for a world without continual growth.

Anthropic's Claude status page reports elevated errors affecting claude.ai, Claude Code, and platform.claude.com. The notice does not specify the cause or scope of the disruption. Users of these services may experience access or usage issues.

After 600 experiments, the author examines JEPA world models amid a broader debate over what a world model should be. The piece notes that most attention goes to generative world models that predict the future by generating it, usually in pixels, while offering findings on JEPA's alternative approach.

A reader discussion around the report that opening a PowerPoint on an iPad can take 16 clicks highlights frustration with tangled login redirects, clunky Microsoft authentication, and constant reauthentication that users say wastes time and may even weaken security. Commenters also debate the role of iPads and Chromebooks in classrooms, weighing distractions and limited productivity against benefits like digital note-taking and equal device access.

Eli Lilly CEO David Ricks pushed back on Anthropic CEO Dario Amodei’s optimistic claims that AI will rapidly transform medicine and cure most diseases, calling them ludicrous. Ricks argued that drug discovery and development remain far more complex than such aggressive AI timelines suggest.

LibreOffice is making a cheeky point that it works 365 days a year, apparently contrasting itself with Microsoft 365. The message is light on details but emphasizes year-round availability.

The FAA has issued a nationwide ground stop for all US airports due to an equipment outage, barring flights from departing to US airports. Aircraft already in the air are still allowed to land.

Microsoft Outlook/365 remains down after 12 hours. Microsoft says changes meant to improve serviceability did not work as expected. Engineers are now identifying alternate workstreams to add capacity amid sustained traffic management imbalances.

A breach at Caixa’s insurer exposed the names and tax IDs (CPFs) of all 7.6 million customers, though no other financial information was reportedly leaked. Commenters stressed that the customer list itself is sensitive financial data that could help scammers target victims, and that Brazil’s widespread use and repeated leaks of CPF numbers make such incidents especially hard to contain.

Anthropic’s Claude AI assistant is currently down, according to its incident and scheduled maintenance history. The outage is affecting access to the service, with the report tracking the incident alongside related maintenance activity.

Researchers show that malicious changes can be embedded directly in a neural network’s weights and passed from one model to another through weight-space editing, effectively acting like model viruses. The finding highlights a new supply-chain risk for reused or fine-tuned models, since behavior and alignment can be altered without conventional data-level attacks.

The FAA has issued a nationwide ground stop, citing “extraordinary circumstances” in an extremely rare move that halts flights across the U.S. The order is expected to disrupt air travel nationwide, though details on what prompted it were not immediately provided.

Jonathan Blow and Wolf Tivy discuss the explosion of complexity in software and why today’s AI cannot produce better code than people. They also explore what the world would look like if AI actually solved coding.

OpenAI has disbanded its robotics team and reassigned its robotics researchers to other teams, reflecting a new approach to building general-purpose robots. The move comes as OpenAI’s general models begin running robots.

TSMC says it has found no evidence that its own systems were compromised after reports that current and former employee data appeared on an external website. The company said the data matches information stored in a third-party cloud provider’s systems and is unrelated to TSMC’s operations or customer data, while hackers claim to hold 6.9GB covering about 46,000 employee records and are demanding 3 bitcoin. The incident appears to stem from a third-party provider rather than TSMC itself.