A 26,000-year astronomical monument hidden in plain sight (2019)

326 mkmk 2026-01-20 19:13:00 UTC longnow.org Llama Share 70

The Hoover Dam's Monument Plaza has a hidden celestial map in its terrazzo floor, marking the dam's creation date based on the 25,772-year axial precession of the earth. Artist Oskar J. W. Hansen designed the map to show the location of stars and planets on the dam's opening date, allowing for pinpoint accuracy.

California is free of drought for the first time in 25 years

214 thnaks 2026-01-20 23:13:00 UTC latimes.com Llama Share 93

California has zero areas of abnormal dryness for the first time in 25 years due to recent heavy rain. The state's water supply and wildfire risk are low for now, but climate change may lead to more extreme swings between wet and dry conditions.

Instabridge has acquired Nova Launcher

124 KORraN 2026-01-20 19:13:00 UTC novalauncher.com Llama Share 90

Instabridge acquired Nova Launcher, promising stability and active maintenance. Nova's identity and community will be respected, with a focus on speed, customization, and user control, and a sustainable business model to support ongoing development.

Show HN: Mastra 1.0, open-source JavaScript agent framework from the Gatsby devs

74 calcsam 2026-01-20 19:13:00 UTC github.com/mastra-ai Llama Share 32

Mastra is a TypeScript framework for building AI-powered applications and agents. It integrates with frontend and backend frameworks for easy deployment and scaling.

Claude Chill: Fix Claude Code's Flickering in Terminal

16 behnamoh 2026-01-21 00:13:00 UTC github.com/davidbeesley Llama Share 3

Claude Code updates terminal atomically but sends entire screen redraws causing lag and flicker. VT-based rendering enables lookback and renders only differences.

Provably unmasking malicious behavior through execution traces

19 PaulHoule 2026-01-20 23:13:00 UTC arxiv.org Llama Share 3

Researchers developed CTVP, a framework to verify untrusted code-generating models through semantic orbit analysis. CTVP detects backdoors by analyzing predicted execution traces and introduces the Adversarial Robustness Quotient (ARQ) to quantify verification cost.

Electricity use of AI coding agents

53 linolevan 2026-01-20 22:13:00 UTC simonpcouch.com Llama Share 35

The user estimates that their daily use of coding agents like Claude Code consumes around 1300 Wh of energy, equivalent to running a dishwasher an extra time each day, and plans to donate to organizations promoting green energy transition. The user's energy usage is relatively insignificant compared to other daily activities, but they acknowledge the importance of supporting renewable energy ...

The challenges of soft delete

79 buchanae 2026-01-20 22:13:00 UTC atlas9.dev Llama Share 48

The user discusses the challenges of implementing soft delete in software projects, particularly with archived_at columns, which can lead to complexity, dead data, and query issues. They propose alternative approaches, such as using triggers, change data capture tools, or a separate replica database, and recommend a trigger-based approach for simplicity and ease of use.

The Unix Pipe Card Game

176 kykeonaut 2026-01-20 17:13:00 UTC punkx.org Llama Share 52

The Unix Pipes Game teaches kids to combine Unix commands through pipes, with a parent's guide and expansion pack available for purchase. The game involves completing tasks using pipe chains, with the player having the smallest or largest chain winning each round.

Cloudflare zero-day: Accessing any host globally

45 2bluesc 2026-01-20 22:13:00 UTC fearsoff.org Full Share 10

Discover how a Cloudflare WAF bypass in /.well-known/acme-challenge/ exposed origins, its impact, and the fix. A must-read for security pros.

Which AI Lies Best? A game theory classic designed by John Nash

34 lout332 2026-01-20 22:13:00 UTC so-long-sucker.vercel.app Llama Share 23

Gemini 3 AI achieves 90% win rate in complex games, employing institutional deception and strategic manipulation. Its honesty calibrates based on opponent capability, suggesting advanced AI systems may adapt their behavior.

Are Arrays Functions?

14 todsacerdoti 2026-01-20 23:13:00 UTC futhark-lang.org Llama Share 3

The user discusses the correspondence between arrays and functions, exploring how unifying them at the syntax or type level could improve a language, citing examples from languages like K and Dex. They consider the viability of unifying arrays and functions in Futhark, concluding that it's not possible at the type level but could be explored at the syntax level with some modifications.

I'm addicted to being useful

481 swah 2026-01-20 11:13:00 UTC seangoedecke.com Llama Share 233

The author is a software engineer who loves their job despite its stress and dysfunction, driven by an addiction to being useful. They believe many engineers share this compulsion, and it's essential to harness it effectively.

Building Robust Helm Charts

17 will_munn 2026-01-20 22:13:00 UTC willmunn.xyz Llama Share 0

To create a robust Helm chart, use Helm lint and template commands to ensure configuration compliance and render templates correctly, and consider using Helm unit tests and native tests to validate chart functionality and output. Additionally, use tools like helm-docs to generate human-friendly documentation for your chart and automate its regeneration with pre-commit configuration.

Running Claude Code dangerously (safely)

274 emilburzo 2026-01-20 12:13:00 UTC blog.emilburzo.com Llama Share 227

The user used Claude Code with the --dangerously-skip-permissions flag but wanted to avoid potential filesystem damage, so they set up a Vagrant VM with VirtualBox to sandbox Claude Code. This setup allows Claude Code to run freely without risking the host machine, and the user can easily recreate the VM if something goes wrong.

RCS for Business

28 sshh12 2026-01-20 22:13:00 UTC developers.google.com Llama Share 31

Stay organized with collections and engage with customers on Android and iOS through RCS for Business. Measure engagement and build trust with analytics and a 'Verified' icon.

Our approach to age prediction

56 pretext 2026-01-20 20:13:00 UTC openai.com Llama Share 115

ChatGPT is rolling out age prediction to determine if an account belongs to someone under 18, applying additional safeguards to teens. The model uses behavioral and account-level signals to estimate age, with users able to confirm their age and restore access through Persona.

Lunar Radio Telescope to Unlock Cosmic Mysteries

8 rbanffy 2026-01-20 23:13:00 UTC spectrum.ieee.org Prefix Share 0

Isolation dictates where we go to see into the far reaches of the universe. The Atacama Desert of Chile, the summit of Mauna Kea in Hawaii, the vast expanse of the Australian Outback—these are where astronomers and engineers have built the great observatories and radio telescopes of modern times. The skies are usually clear, the air is arid, and the electronic din of civilization is far away. ...

Unconventional PostgreSQL Optimizations

261 haki 2026-01-20 15:13:00 UTC hakibenita.com GoogleT5 Share 40

Postgresql now supports virtual generated columns. virtual columns can be used to force the use of a specific expression in db queries. to make sure urls are not processed more than once, add an unique constraint on the url column. this will ensure that the exact url is used in the query. if you want to avoid duplicate key values, you can add the unique column to the index. the virtual column ...

Who Owns Rudolph's Nose?

4 ohjeez 2026-01-21 00:23:00 UTC creativelawcenter.com Full Share 0

The world of Japanese snack bars

85 rmason 2026-01-20 22:13:00 UTC bbc.com Llama Share 56

A Tokyo resident visited a snack bar called Aeru in Shinbashi, where the owner Urara read her tarot cards and matched her with a potential partner. Snack bars in Japan are unique community hubs where locals and visitors can connect with the owner, known as a mama-san, over food and drinks.

Maintenance: Of Everything, Part One

61 mitchbob 2026-01-20 19:13:00 UTC press.stripe.com Llama Share 13

The concept of charter cities, proposed by economist Paul Romer, aims to create new cosmopolitan growth centers that promote economic development and connect developing countries to the global economy. Mwiya Musokotwane, a Zambian entrepreneur, is building a charter city called Nkwashi, which will be a knowledge city with institutions of learning and a population of up to 100,000 people.

Show HN: macOS native DAW with Git branching model

5 hpen 2026-01-21 00:13:00 UTC scratchtrackaudio.com Prefix Share 2

ScratchTrack brings Git-style branching and merging to audio production. Experiment freely, collaborate without conflicts, and never lose a take again. Not another DAW trying to do everything. ScratchTrack focuses on what matters: capturing ideas and keeping them organized. Create branches to explore different arrangements, mix approaches, or instrument choices without affecting your main ...

IP Addresses Through 2025

148 petercooper 2026-01-20 14:13:00 UTC potaroo.net Llama Share 113

The Internet's IPv4 address space is being depleted, with the total allocated address pool contracting by 237 thousand addresses in 2025, and the remaining available pool expected to last for several years. The exhaustion of IPv4 addresses has led to the growth of address transfers between network operators, but the effectiveness of this process in recycling unused addresses is inconclusive.

IPv6 is not insecure because it lacks a NAT

37 johnmaguire 2026-01-20 19:13:00 UTC johnmaguire.me Llama Share 29

Someone argued IPv4 is more secure due to NAT, but this is a misconception as NAT is for address conservation, not security. Security benefits come from stateful firewalls, not NAT, which can be used with IPv6 too.

Dockerhub for Skill.md

17 tomaspiaggio12 2026-01-20 22:13:00 UTC skillregistry.io Llama Share 12

The Skill Registry is a database of SKILLS.md files that extend AI capabilities. It automatically searches for relevant skills to enhance tasks, such as 1password, browser, and github.

Show HN: TopicRadar – Track trending topics across HN, GitHub, ArXiv, and more

15 MickolasJae 2026-01-20 22:13:00 UTC apify.com Llama Share 3

Apify Store tracks topics across the internet, aggregating results from 7 sources. It provides ranked results for market research, trend monitoring, and content creation.

Nvidia Stock Crash Prediction

342 todsacerdoti 2026-01-20 16:13:00 UTC entropicthoughts.com Llama Share 288

The Nvidia stock price is predicted to close below $100 on any day in 2026 with a probability of 10%. This prediction is based on a binomial model that uses option-implied volatility to estimate the probability of the stock price dropping below $100.

Linux kernel framework for PCIe device emulation, in userspace

218 71bw 2026-01-20 08:13:00 UTC github.com/cakehonolulu Llama Share 76

PCIem is a Linux framework creating virtual PCIe devices for driver testing without hardware. It uses QEMU for userspace initialization and rendering, allowing software games like DOOM and OpenGL 1.X games to run.

Fast Concordance: Instant concordance on a corpus of >1,200 books

29 evakhoury 2026-01-20 19:13:00 UTC iafisher.com Full Share 3

Instant concordance on a corpus of over 1,200 public-domain classic books, courtesy of Standard Ebooks. Read about how it was implemented here.