Earth is warming faster. Scientists are closing in on why

Climate modeller Gavin Schmidt was humbled by 2023's unexpectedly hot temperature. He confessed in Nature that his team struggled to understand the anomaly.

ASCII characters are not pixels: a deep dive into ASCII rendering

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The user built an image-to-ASCII renderer that utilizes shape to achieve sharp, high-quality ASCII rendering by picking characters based on their shape and applying contrast enhancement effects. The renderer uses a 6D shape vector to capture the shape of ASCII characters and a directional contrast enhancement technique to eliminate staircasing effects and improve readability.

We Put Claude Code in Rollercoaster Tycoon

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Ramp built Claude Code, an AI agent, to manage a park in RollerCoaster Tycoon, demonstrating its strengths and weaknesses in automating tasks. The project highlights the importance of environment legibility and feedback loops in agent design, showcasing the potential and limitations of coding agents in real-world applications.

2025 was the third hottest year on record

2025 was one of the hottest years on record despite initial expectations of a relatively cool year. Climate reports from Europe and America show an acceleration in global warming.

Why There's No Single Best Way to Store Information

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Computer scientists design data structures like hash tables and heaps to balance insertion and retrieval times, and space usage. These data structures help manage information efficiently, but each has its trade-offs and limitations.

Show HN: What if your menu bar was a keyboard-controlled command center?

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ExtraBar brings Mac users a customizable menu bar with instant access to apps, deep links, and custom actions. Requiring zero permissions to work.

Counterfactual evaluation for recommendation systems

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The author discusses the limitations of offline evaluation in recommendation systems, treating recommendations as observational problems when they are actually interventional problems.

An Elizabethan mansion's secrets for staying warm

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Hardwick Hall's design, built during the Little Ice Age, uses clever techniques to keep warm, such as orientation and thermal mass, which can be applied to modern homes. These Elizabethan building secrets can help reduce our reliance on fossil fuels and create more efficient heating and cooling systems.

The 600-year-old origins of the word 'hello'

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The word "hello" has a short history, first appearing in print in 1826 in a Connecticut newspaper, and has since become a ubiquitous greeting in the English-speaking world. Its meaning can vary depending on the tone, inflection, and form used, conveying different emotions and intentions.

M8SBC-486 (Homebrew 486 computer)

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The M8SBC-486 is a 486 homebrew computer motherboard made from scratch with compatibility to run Linux, DOOM, and other older x86 PC software. It has a PGA-168 socket for 5V 486 CPUs and a 24 MHz FSB, making it compatible with DX2 CPUs.

The Dilbert Afterlife

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Scott Alexander reflects on Scott Adams' life and career, noting that Adams was a big part of his life despite being a different person. Alexander discusses how Adams' Dilbert comics captured the "nerd experience" of being smarter than others but struggling to succeed. He also explores Adams' failed attempts at business and his eventual turn to writing about spirituality in God's Debris, ...

East Germany balloon escape

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Two East German families, the Strelzyks and the Wetzels, escaped to West Germany in a homemade hot air balloon on September 16, 1979, after over a year and a half of preparations. They successfully crossed the heavily fortified inner German border and the Berlin Wall, landing safely in West Germany.

ClickHouse acquires Langfuse

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Langfuse's roadmap remains the same, focusing on building the best LLM engineering platform with open source and self-hosting. The team joins ClickHouse to invest in performance, reliability, and user experience.

Map To Poster – Create Art of your favourite city

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The user runs a Python script to create map posters for various cities with different grid patterns and themes. The script uses the Overpass API to fetch data and plot roads, buildings, and amenities on the map.

16 Best Practices for Reducing Dependabot Noise

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To manage Dependabot at scale without sacrificing velocity, optimize dependency workflows by implementing strategies such as cooldowns, batching updates, and adding review requirements. By doing so, you can reduce risk, improve stability, and increase productivity in your enterprise team.

Show HN: Streaming gigabyte medical images from S3 without downloading them

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WSI Streamer is a cloud-native tile server for Whole Slide Images that serves tiles directly from S3 with one command. It supports various features including authentication, signed URLs, and slide metadata retrieval.

The Resonant Computing Manifesto

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Technology can either expand our capacity or alienate us, and we're at a crossroads with AI. To build a resonant future, we must resist hyper-scale and prioritize individual and collective flourishing through principles like privacy, dedication, and adaptability.

The Olivetti Company – By Bradford Morgan White

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The town of Ivrea is quite old and has a rich history, but today, its population has shrunk from around 90,000 in 1970 to just over 20,000 in the 2020s. In the 1400s, Ivrea gained small Jewish community. By the mid 1800s, Salvador Benedetto Olivetti was a successful textile merchant in that community, and he married Elvira Sacerdoti, a banking heiress from Modena. Salvador and Elvira had ...

Cloudflare acquires Astro

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The Astro Technology Company is joining Cloudflare, allowing them to focus on the Astro web framework without distractions. With Cloudflare's support, Astro will remain free, open-source, and continue to improve as a platform-agnostic framework for content-driven websites.

US electricity demand surged in 2025 – solar handled 61% of it

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Solar power accounted for 61% of US electricity demand growth in 2025, meeting 81% of demand growth in Texas and the Midwest. Solar generation increased by 83 TWh, a 27% rise from 2024, covering most of the new electricity demand nationwide.

The 'untouchable hacker god' behind Finland's biggest crime

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Tiina Parikka, a Finnish headteacher, received a ransom email demanding €200 in bitcoin after her therapy notes were hacked from Vastaamo, a Finnish psychotherapy platform. The hacker, later identified as Julius Kivimäki, was arrested in 2023 after a two-year investigation.

Cursor's latest “browser experiment” implied success without evidence

Cursor published a blog post on scaling autonomous coding, where they ran agents for weeks to build a web browser from scratch, producing 1 million lines of code, but the project failed to compile and is considered "AI slop". The post creates an impression of success but lacks reproducibility markers and evidence of the project's functionality.

High-Level Is the Goal

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The Handmade community believes low-level programming is key to building better software, but it's not about everyone making their own UI frameworks from scratch. Instead, it's about having the knowledge to make better choices and build new high-level tools that give the same benefits as today's tools, but with solid foundations.

6-Day and IP Address Certificates Are Generally Available

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Let's Encrypt now offers short-lived and IP address certificates, improving security by requiring more frequent validation. These certificates are valid for 160 hours and 45 days respectively, with IP address certificates being short-lived by default.

Italy investigates Activision Blizzard for pushing in-game purchases

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Italy's competition regulator AGCM investigates Diablo Immortal and Call of Duty Mobile for exploiting children with in-game purchases and misleading parental controls. The regulator also looks into data harvesting and consent process for both games.

Show HN: I built a tool to assist AI agents to know when a PR is good to go

AI coding agents struggle with determining completion due to unclear review comments and unresolved threads. A tool like gtg helps by combining CI and commit statuses into a single state, distinguishing between unresolved discussions and addressed issues.

FLUX.2 [Klein]: Towards Interactive Visual Intelligence

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We release FLUX.2 [klein], a compact image model that unifies generation and editing, delivering state-of-the-art quality in under a second. It runs on consumer hardware with 13GB VRAM, ideal for real-time image generation and editing.

PCs refuse to shut down after Microsoft patch

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Microsoft's January Patch Tuesday update caused some Windows 11 PCs to refuse shutdown or hibernation due to a bug tied to Secure Launch. Users can force shutdown with the command "shutdown /s /t 0" until a fix is released in a future update.

Architecture for Disposable Systems

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Software is becoming disposable due to cheap coding agents, shifting quality expectations, and the rise of "vibe coding". To survive this shift, systems must have a durable core, immutable contracts, and disposable peripherals.

LLM Structured Outputs Handbook

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Developers face issues with LLMs' probabilistic nature causing occasional output failures. This handbook provides a comprehensive guide to ensure structured LLM outputs for tasks like data extraction and code generation.