Harvard Loses $450M in Federal Grants Amid Antisemitism Accusations

2025-05-18
Harvard Loses $450M in Federal Grants Amid Antisemitism Accusations

The federal government terminated $450 million in research grants to Harvard University, citing antisemitism. This follows previous cuts totaling $2.2 billion and signals a potential complete cutoff of future funding. The government accuses Harvard of insufficient action to address antisemitic incidents and discriminatory practices, although the announcement lacks specifics on recent events or Harvard's efforts. Multiple federal agencies issued similar letters, indicating a coordinated effort to withdraw funding.

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Bird Flu Pandemic? Seasonal Flu Immunity May Offer Some Protection

2025-03-24
Bird Flu Pandemic? Seasonal Flu Immunity May Offer Some Protection

While bird flu has ravaged the animal kingdom, human cases remain relatively low. However, scientists fear a potential pandemic if the virus mutates. New research suggests that immunity from seasonal flu might offer some protection against H5N1 bird flu. Studies using animal models and blood tests indicate that prior exposure to seasonal flu could lessen the severity of bird flu. This is due to shared traits between the viruses. However, this protection is not absolute and varies depending on individual immunity and other factors. While offering a glimmer of hope, scientists stress the need for continued research and vaccination efforts to prepare for a potential pandemic.

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Running a 486 VM on the Sipeed Tang: An Amateur's Feat

2025-09-13

The author successfully ported the MiSTer's ao486 PC core to the Sipeed Tang 138K FPGA, creating a project called 486Tang. This marks the first time ao486 has been successfully ported to a non-Altera FPGA. The port presented numerous challenges, including memory management (using SDRAM for main memory, DDR3 for the framebuffer), disk storage (direct SD card access), and a complex debugging process. To overcome the difficulties of hardware debugging, the author cleverly utilized Verilator for subsystem and whole-system simulation, using Bochs BIOS debug messages and custom tracing flags to pinpoint issues. Ultimately, through a series of performance optimizations such as reset tree and fan-out reduction, instruction fetch optimization, and TLB optimization, 486Tang achieved roughly 486SX-20 performance levels. This project showcases the author's impressive FPGA development skills and problem-solving abilities.

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Development

Tech's Burnout Machine: Why We Need to Unionize

2025-03-20

The tech industry peddles a myth of the 'dream job,' complete with perks and agile methodologies. But the reality is a brutal system that grinds down developers, sysadmins, and infosec professionals, leaving them burnt out, disillusioned, and disposable. This article argues that the relentless pressure, lack of job security, and ethical concerns necessitate unionization to reclaim control, improve working conditions, and fight for a better future within the industry.

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The Housing Market's Fragility: Is Building More the Answer?

2025-07-21
The Housing Market's Fragility: Is Building More the Answer?

The prevailing belief is that increasing housing supply will lower prices and solve the affordability crisis. However, recent price drops in several US cities have triggered panic, not celebration. Developers are pulling out, lenders are tightening, and policymakers are scrambling to bail out the system. The article argues the problem isn't a lack of supply, but the fragility of the financial system. The current housing market treats homes as financial products, not shelter; price drops are seen as risk signals, leading to decreased, not increased, supply. The article calls for a bottom-up approach, focusing on local, small-scale affordable housing to build a healthier, more resilient housing ecosystem, rather than relying on national-level financial engineering and subsidies.

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NZ Health System Runs on Excel Spreadsheet, Blows $16B Budget

2025-03-11
NZ Health System Runs on Excel Spreadsheet, Blows $16B Budget

Health New Zealand (HNZ), managing a $16 billion budget, relies primarily on a single Excel spreadsheet for financial management. This led to budget overruns, and a Deloitte report revealed critical flaws: untraceable data, high error rates, and slow analysis. Despite possessing 6,000 applications and 100 digital networks, HNZ's senior leadership lacks coordination, holding only weekly in-person meetings. The Health Minister lacks a concrete improvement plan, raising serious concerns.

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Humanity: A Giant Meatball?

2025-06-11
Humanity: A Giant Meatball?

A Reddit user calculated that if all humans were blended into a single mass, it would form a sphere less than 1 kilometer wide, easily fitting within Central Park. The article humorously compares the total mass of humanity to that of insects, fish, and bacteria, prompting reflection on the sheer scale of life on Earth. The quirky conclusion apologizes to the author's mother.

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Street Smarts vs. School Smarts: A Revealing Study on Math Education in India

2025-02-12
Street Smarts vs. School Smarts: A Revealing Study on Math Education in India

MIT economist Abhijit Banerjee's research reveals a fascinating discrepancy: Indian children excel at mental arithmetic in informal settings like marketplaces, yet underperform on standardized math tests. This highlights a critical need for math education reform. The study emphasizes that 'learning by doing' alone isn't sufficient for academic success; it requires bolstering mathematical reasoning and storytelling in teaching. However, overcoming teacher shortages and limitations in current assessment systems are crucial challenges. The ultimate goal is to unlock the potential of these talented children, fostering future mathematicians and researchers.

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Critical OpenPGP.js Vulnerability Allows Signature Spoofing

2025-06-10
Critical OpenPGP.js Vulnerability Allows Signature Spoofing

Codean Labs discovered a critical vulnerability (CVE-2025-47934) in the OpenPGP.js library that allows attackers to spoof arbitrary signatures. By leveraging a valid signature and appending a malicious data packet, attackers can trick OpenPGP.js verifiers into accepting the malicious data as signed, effectively forging signatures. This vulnerability impacts several web-based email clients, posing a critical risk. Versions 5.11.3 and 6.1.1 patch this vulnerability; immediate updates are recommended.

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Development signature spoofing

Firefox Privacy Checklist: Enhance Your Privacy

2025-08-30
Firefox Privacy Checklist: Enhance Your Privacy

This checklist guides you through optimizing Firefox's privacy settings. The author prefers Firefox over Chromium-based browsers like Brave due to Mozilla's non-profit nature and commitment to open source. It details how to improve privacy via settings and extensions, including accessing settings and using about:config (with a cautionary note). The author welcomes suggestions for improvement.

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Development

ISO 8583: The Secret Language of Credit Cards

2024-12-18
ISO 8583: The Secret Language of Credit Cards

Every time you tap your card or pay online, you're interacting with the ISO 8583 protocol. This 1987 standard defines the format of real-time transaction messages between banking networks. It includes core fields like message type indicators, bitmaps, and data elements, but networks vary in their extensions and serialization, leading to compatibility challenges. This article delves into the complexities of ISO 8583's structure, field encoding, nested message handling, and demonstrates building a robust ISO 8583 parser to handle network variations and error scenarios.

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3D-Printed Device Creates Acoustic Rainbows Without Electricity

2025-06-17
3D-Printed Device Creates Acoustic Rainbows Without Electricity

Researchers from the Technical University of Denmark and Universidad Politécnica de Madrid have developed a 3D-printed acoustic rainbow emitter (ARE) that separates broadband white noise into distinct frequencies and directs them in different directions, creating an acoustic rainbow. Unlike traditional acoustic systems, the ARE uses passive scattering, requiring no electricity. By leveraging computational morphogenesis, topology optimization, and wave-based modeling, the researchers designed a complex structure that manipulates sound waves through interactions with its surface. This groundbreaking device opens new avenues in acoustic sensing and control, offering potential applications in various fields.

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Intel SGX's Demise: A Tale of Complexity and Market Realities

2025-05-08
Intel SGX's Demise: A Tale of Complexity and Market Realities

Intel has confirmed that its Software Guard Extensions (SGX) will be deprecated in 12th generation processors (Workstation/Desktop/Laptop/embedded platforms), remaining only in high-end Xeon CPUs for servers. Intended to enhance trust in cloud environments, SGX's complex implementation across hardware, microcode, and firmware proved costly and vulnerable. This article details SGX's inherent complexity, risks (key leakage, side-channel attacks), flawed threat model, and overblown market hype. Ultimately, Intel's narrowing SGX's scope to servers acknowledges it's not a silver bullet security solution.

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InstantStyle: One-Click Style Transfer Framework for Effortless AI Image Generation

2025-03-07
InstantStyle: One-Click Style Transfer Framework for Effortless AI Image Generation

InstantStyle is a simple yet powerful framework for image style transfer, achieving precise style control by cleverly separating image content and style information. It leverages CLIP's global features and focuses on specific attention layers (up_blocks.0.attentions.1 and down_blocks.2.attentions.1) to manipulate style and layout. InstantStyle is integrated into popular tools like diffusers, supports models like SDXL and SD1.5, and offers online demos and high-resolution generation capabilities, significantly simplifying the workflow and providing users with a convenient experience for stylized image generation.

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Prenatal Chlorpyrifos Exposure Linked to Childhood Brain Abnormalities

2025-09-03
Prenatal Chlorpyrifos Exposure Linked to Childhood Brain Abnormalities

A new US study suggests that prenatal exposure to the insecticide chlorpyrifos is associated with brain structural abnormalities and reduced motor function in children and adolescents. Researchers found that higher prenatal exposure levels correlated with greater deviations in brain structure, function, and metabolism, along with poorer motor speed and programming. This supports previous research linking chlorpyrifos to impaired cognitive function and brain development, but provides the first evidence of widespread and long-lasting molecular, cellular, and metabolic effects on the brain. While the study has limitations, such as only showing association and not causation, the ubiquity of chlorpyrifos and similar compounds warrants further research into these potent pesticides.

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Disposable Vapes Release Toxic Metals at Alarming Rates

2025-06-25
Disposable Vapes Release Toxic Metals at Alarming Rates

A study from UC Davis reveals that some disposable e-cigarettes and vape pods release significantly higher amounts of toxic metals, such as lead, nickel, and antimony, than traditional cigarettes and older e-cigarette models after a few hundred puffs. One disposable device released more lead in a day's use than almost 20 packs of traditional cigarettes. Researchers found that these toxins are either present in the e-liquid or leach from components into the e-liquid, ultimately transferring to the vapor. The high levels of these metals, exceeding health risk thresholds for cancer and other illnesses, highlight the urgent need for stronger regulations and enforcement, especially given the popularity of these devices among teens and young adults who are particularly vulnerable to lead exposure. The findings underscore the potentially severe health consequences, exceeding those of traditional cigarettes in some cases.

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Tenstorrent Unveils Blackhole™ AI Accelerator Cards and Developer Hub

2025-04-03
Tenstorrent Unveils Blackhole™ AI Accelerator Cards and Developer Hub

Tenstorrent has launched its new Blackhole™ AI accelerator cards, featuring all-new RISC-V cores designed for efficient handling of massive AI workloads and offering an infinitely scalable solution. The Blackhole™ product line includes single-processor versions (p100 and p150, priced at $999 and $1299 respectively) and a four-processor liquid-cooled workstation, the TT-Quietbox ($11,999). The next-generation Blackhole™ PCIe cards boast a 6nm manufacturing process, faster Network-on-Chip (NoC), higher memory density, and additional integrated RISC-V cores. Alongside the hardware, Tenstorrent also launched a Developer Hub providing model support, tutorial videos, bounties, and resources for the developer community. All Blackhole™ cards and the TT-Quietbox are fully supported by Tenstorrent's open-source software stack, including TT-Forge™, TT-NN™, TT-Metalium™, and TT-LLK.

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Hardware

Unexpected CPU Performance Boost from Data Structure Optimization

2025-08-26

A program processing a large dataset encountered memory and CPU performance bottlenecks. Initially using a single array to store data resulted in up to 1GB of memory consumption. By employing data-oriented programming, splitting the data into multiple arrays saved approximately 200MB of memory. Further optimization involved replacing a string array with byte array indices for field names, further reducing memory usage. Surprisingly, this change also significantly decreased CPU usage. The reason lies in the garbage collection mechanism: processing a string array requires the GC to traverse all string objects, while processing a byte array doesn't, thus drastically reducing GC overhead.

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PostgreSQL Named DBMS of the Year 2024 (Again!)

2025-01-14

DB-Engines has announced PostgreSQL as its DBMS of the Year for the second year running, marking its fifth overall win. Outpacing 423 other monitored systems, PostgreSQL solidified its position as the most popular database management system in 2024. The release of PostgreSQL 17, with performance enhancements and expanded replication, further cemented its success. Snowflake took second place, its cloud-based architecture and multi-cloud support driving its popularity. Microsoft's Azure SQL Database and SQL Server remain strong contenders.

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Tech

A Decade of Running: From Inconsistent Jogs to Daily Discipline

2025-07-14
A Decade of Running: From Inconsistent Jogs to Daily Discipline

The author didn't start running until their late twenties, initially following an inconsistent pattern of running a few times, then taking breaks. In July 2015, something shifted. A streak of consecutive days running led to a challenge: four days in a row. This evolved into a week, a month, a year, and now, a decade. Over the past ten years, the author has run across seven continents, through various weather conditions and physical challenges, never giving up. This journey has not only brought physical and mental benefits but also a profound appreciation for perseverance and the unwavering support of their wife, Molly.

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Optimizing ESP32 OLED Driver: Speed vs. Font Support

2025-04-14
Optimizing ESP32 OLED Driver: Speed vs. Font Support

The author experimented with several drivers for an SSD1306 OLED display on an ESP32, ultimately settling on a modified, deprecated driver. Initially, an Espressif driver was used, but it only supported a single font. Subsequent attempts with LVGL and U8G2 suffered from low refresh rates. The author returned to the deprecated driver, adapting its I2C API calls for compatibility with the latest ESP-IDF, achieving a 40Hz refresh rate. To add font support, the nvbdflib library was integrated, directly parsing BDF fonts and drawing to the framebuffer, resulting in high-speed refresh and custom font capabilities.

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Development

Is It Time to Quit Your Job? Signs You Should Jump Ship

2025-01-22
Is It Time to Quit Your Job? Signs You Should Jump Ship

Feeling burnt out and surrounded by incompetence? This article explores various signs of career stagnation, including the comfort trap, overly easy work, declining colleague quality (Peter Principle and Dead Sea effect), and inflated titles. The author suggests that if you find yourself in these situations, and your company doesn't genuinely value its employees, it might be time to consider moving on. The article also advises on navigating the departure process smoothly, including avoiding potentially damaging exit interviews.

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Debian 13's /tmp Moves to tmpfs: Speed and Challenges

2025-08-29
Debian 13's /tmp Moves to tmpfs: Speed and Challenges

Debian 13 revolutionizes /tmp by moving it to the tmpfs in-memory filesystem, resulting in dramatically faster file access. However, this introduces challenges: users could consume significant RAM, impacting system performance. Debian defaults to a 50% RAM limit for tmpfs, but this is customizable. Furthermore, Debian 13 includes automatic cleanup, deleting unused files in /tmp after 10 days by default. For low-memory systems, users can easily disable tmpfs.

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Development

Schemesh: A Lisp-Scriptable Unix Shell

2025-02-15
Schemesh: A Lisp-Scriptable Unix Shell

Schemesh is an interactive shell scriptable in Lisp, designed as a user-friendly replacement for bash, zsh, and other traditional Unix shells. It offers interactive line editing, autocompletion, and history, while seamlessly integrating a full Lisp REPL powered by Chez Scheme for complex tasks. Users can switch effortlessly between shell syntax and Lisp syntax, with extensive functions provided for managing Unix processes. For scripting and serious programming, Schemesh replaces the slow and error-prone traditional shell scripting with a powerful Lisp REPL, boosting efficiency and reliability.

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Development

OpenAI's o3-pro: More Powerful, but Much Slower ChatGPT Pro

2025-06-17
OpenAI's o3-pro: More Powerful, but Much Slower ChatGPT Pro

OpenAI has released o3-pro, a more powerful version of ChatGPT Pro, demonstrating improvements across various domains including science, education, and programming. However, this enhanced performance comes at the cost of significantly slower response times. Many users report better answer quality than o3, but the lengthy wait times (15+ minutes) disrupt workflows. Tests show reduced hallucinations in some cases, but not a consistent outperformance of o3 across benchmarks. While o3-pro excels at tackling complex problems, its high cost and slow speed make it a niche offering rather than a daily driver. Many users suggest reserving o3-pro for scenarios where o3 or other models like Opus and Gemini fail, making it a valuable 'escalation' tool for particularly challenging queries.

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AI

Build a Text-to-Speech Reader with Sentence Highlighting in JavaScript

2025-06-26
Build a Text-to-Speech Reader with Sentence Highlighting in JavaScript

This article guides you through building a simple web tool that leverages JavaScript's SpeechSynthesis API for text-to-speech (TTS) functionality and dynamic sentence highlighting. It explains how to control speech playback, set voice parameters, and track speech events. The article also details implementing sentence-level highlighting using CSS and JavaScript, culminating in a fully functional interactive reader with play, pause, resume, stop buttons, and voice selection. The complete HTML, CSS, and JavaScript code is provided.

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Development Sentence Highlighting

Bluesky Improves Performance with 'Lossy Timelines'

2025-02-19

Bluesky tackled database hot spots caused by high-activity users by introducing 'Lossy Timelines'. This mechanism probabilistically drops write operations, limiting the load from heavily followed users and dramatically reducing P99 latency. Write operations that could take minutes now complete in under 10 seconds. This strategy cleverly sacrifices some data consistency for massive gains in system performance and scalability, demonstrating that imperfect system design can lead to a better user experience in specific contexts.

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Development

Speeding Up CRuby's FFI with JIT Compilation

2025-02-12
Speeding Up CRuby's FFI with JIT Compilation

This article explores using Just-In-Time (JIT) compilation to improve the performance of Ruby's Foreign Function Interface (FFI). Benchmarks demonstrate FFI's performance drawbacks compared to native extensions. The author introduces FJIT, a solution leveraging RJIT and custom machine code generation to create runtime machine code for calling external functions, bypassing FFI overhead. FJIT outperforms native extensions in tests, offering a high-performance alternative for Ruby developers. Currently a prototype supporting only ARM64, FJIT's future expansion to other architectures and more complex function calls is anticipated.

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Development

OCR Challenge: Digitizing Saint-Simon's Memoirs

2024-12-17

The author spent several weeks using OCR to digitize a late 19th-century edition of the 18th-century French memoirs, *Les Mémoires de Saint-Simon*. This 45-volume behemoth, containing over 3 million words, is available online as images, but is difficult to read. The goal was to create a readable, searchable, and copyable text version. Challenges included poor image quality and parsing different page zones (headers, main text, margin comments, footnotes, etc.). Google Vision API was used for OCR, with a Python program processing the results to identify and separate text from different areas. While LLMs failed to reliably handle footnote references, the author improved the program and incorporated manual review, resulting in the release of the first volume.

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