Level S4 solar radiation event(swpc.noaa.gov)
594 points by WorldPeas | 197 comments
NOAA Space Weather Prediction Center news alert that G4 (severe) geomagnetic storm levels were reached on 19 January 2026, with aurora forecast and guidance.
Hacker News on
Stories posted this day, by points. Rank history starts with the October 2026 rebuild.
Apple testing new App Store design that blurs the line between ads and results(9to5mac.com)
581 points by ksec | 479 comments
9to5Mac article reporting Apple is testing an App Store search design that makes sponsored ads look more like regular search results.
Kiel Institute Analysis: US Americans pay 96% of tariff burden(kielinstitut.de)
559 points by 47282847 | 434 comments
Kiel Institute policy brief "America's Own Goal: Who Pays the Tariffs?" analyzing the incidence of US tariffs, finding Americans bear most of the cost.
A decentralized peer-to-peer messaging application that operates over Bluetooth(bitchat.free)
555 points by no_creativity_ | 309 comments
Project page for bitchat, a decentralized peer-to-peer messaging app that works over Bluetooth mesh networks without internet, servers, or phone numbers.
Radboud University selects Fairphone as standard smartphone for employees(ru.nl)
480 points by ardentsword | 228 comments
Radboud University staff news item announcing that Fairphone has been chosen as the standard smartphone issued to employees.
What came first: the CNAME or the A record?(blog.cloudflare.com)
446 points by linolevan | 153 comments
Cloudflare blog post examining the ordering of CNAME and A records in DNS responses and what the DNS standards say about it.
Letter from a Birmingham Jail (1963)(africa.upenn.edu)
423 points by hn_acker | 138 comments
Full text of Martin Luther King Jr.'s 1963 "Letter from a Birmingham Jail," hosted by the University of Pennsylvania African Studies Center.
Amazon is ending all inventory commingling as of March 31, 2026(twitter.com)
387 points by MrBuddyCasino | 209 comments
A post on X by Gerard Hughes saying Amazon will end inventory commingling for third-party sellers on March 31, 2026, which should reduce counterfeit risk.
Reticulum, a secure and anonymous mesh networking stack(github.com)
334 points by brogu | 87 comments
GitHub repository for Reticulum, a cryptography-based networking stack for building resilient mesh networks over LoRa, packet radio, WiFi and other media.
GLM-4.7-Flash(huggingface.co)
323 points by scrlk | 108 comments
Hugging Face model card for GLM-4.7-Flash, a 31B-parameter MIT-licensed text generation model from Z.ai (zai-org).
Notes on Apple's Nano Texture (2025)(jon.bo)
249 points by dsr12 | 128 comments
Are arrays functions?(futhark-lang.org)
149 points by todsacerdoti | 105 comments
The Code-Only Agent(rijnard.com)
147 points by emersonmacro | 64 comments
![Screenshot of cia.gov: Simple Sabotage Field Manual (1944) [pdf]](https://hn.urlbox.com/shots/renders/2026/1/19/1f07ae6e-cf18-4804-a205-f12af5266c18.jpg)
Simple Sabotage Field Manual (1944) [pdf](cia.gov)
132 points by praptak | 54 comments
Nonviolence(kinginstitute.stanford.edu)
129 points by rkp8000 | 69 comments
Losing 1½ Million Lines of Go(tbray.org)
89 points by moks | 9 comments
SIMD programming in pure Rust(kerkour.com)
88 points by randomint64 | 36 comments
![Screenshot of engineering.nyu.edu: How I Became a Quant (2007) [pdf]](https://hn.urlbox.com/shots/renders/2026/1/24/5842dd2e-b824-4572-ae16-17cb77485e18.jpg)
Cows can use sophisticated tools(nautil.us)
70 points by Tomte | 40 comments
Building Robust Helm Charts(willmunn.xyz)
68 points by will_munn | 9 comments
A Brief History of Ralph(humanlayer.dev)
53 points by dhorthy | 28 comments
Writing First, Tooling Second(susam.net)
51 points by blenderob | 7 comments
