Middle-aged man trading cards go viral in rural Japan town

https://www.tokyoweekender.com/wp-content/uploads/2025/04/pikachu-stars-385x257.webp
In Kawara, Japan, kids are playing a unique trading card game featuring local middle-aged men with special abilities. The game, created by Eri Miyahara, aims to strengthen connections between children and older generations in the community.

Show HN: Browser MCP – Automate your browser using Cursor, Claude, VS Code

https://windsurf.com/favicon.ico
Browser MCP connects AI apps to browsers for automation tasks. It enables local automation, saving time and reducing errors in day-to-day operations.

A startup doesn't need to be a unicorn

https://substackcdn.com/image/fetch/w_520,h_272,c_fill,f_auto,q_auto:good,fl_progressive:steep,g_auto/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F42133611-73c5-4577-b2be-d303ee01640d_300x200.jpeg
Matt, a first-time entrepreneur, founded Vizzly and exited in under three years. He advocates for a "missing middle path" in B2B SaaS, raising a small amount of capital while keeping most equity, to achieve profitability and strong asset value.

Fewer Foreign Passengers Are Flying to the US

https://substackcdn.com/image/fetch/w_520,h_272,c_fill,f_auto,q_auto:good,fl_progressive:steep,g_auto/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fca559365-9498-4f71-ac81-ffd20927e189_1260x660.png
The author analyzed US travel data and found a 10% reduction in foreign travelers processed by CBP in the last 30 days. This trend is likely real and not a data reporting issue, suggesting a decline in international travel to the US.

Let's Ban Billboards

The city's design review board has strict rules for new buildings but allows 48-foot billboards with no oversight. Changing this would benefit most people by creating a calmer public space.

20 years of Git

https://blog.gitbutler.com/content/images/size/w500/2025/04/20-yaers-of-git.webp
Linus Torvalds created Git 20 years ago as a simple content tracker for the Linux kernel community, not as a full-fledged version control system. Over time, Git evolved into the widely used SCM it is today, with its core commands and tools emerging from low-level database tools and user-friendly scripts.

After 'coding error' triggers firings, top NIH scientists called back to work

Ten NINDS principal investigators who were mistakenly fired due to a "computer error" are back at work, but their reinstatement is not official. The researchers, who study conditions like multiple sclerosis and Parkinson's disease, were placed on leave with pay and have 60 days to be officially retained.

Show HN: Lux – A luxurious package manager for Lua

Lux is a new Lua package manager that provides a simple CLI for everyday tasks, handling Lua header installation and project management. It offers lockfile support, compatibility with luarocks, and a notion of a project with a TOML manifest format.

Circuit breaker triggered in Japan for stock futures trading

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Foreign visits into the U.S. fell off a cliff in March

https://images.axios.com/Ck6NEhBiba7CP1TiEy0vjyy98_U=/0x0:1920x1080/1920x1080/2025/03/31/1743434450655.jpg?w=3840
Foreign arrivals at US airports fell by over 20% in mid-March compared to last year. This decline may be due to trade wars, economic uncertainty, and travel warnings from US allies.

Bill to block OpenAI's for-profit conversion gets mysteriously gutted

https://substackcdn.com/image/fetch/w_520,h_272,c_fill,f_auto,q_auto:good,fl_progressive:steep,g_auto/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F71098812-2ee4-4006-8bbb-60f773943f16_1236x1265.png
Kim Stanley Robinson praises Marcus as a public intellectual, and his writings can improve actions shaping AI. A California bill, AB-501, aims to prevent OpenAI's conversion to a for-profit, with tens of billions at stake.

Ask HN: I'm an MIT senior and still unemployed – and so are most of my friends

You're a senior at MIT struggling with unemployment and feeling demoralized despite hard work and side projects. You're considering staying for an MEng to avoid an unstable home environment.

The Dire Wolf Is Back

https://media.newyorker.com/photos/67eda988c8a90641b2bfdfbe/master/w_2560%2Cc_limit/r45835.jpg
Colossal is working on a vaccine that could prevent the extinction of species. john sutter: the company's work is being hailed as 'innovative' he says it is not just about making money, but also about restoring ecosystems - and the environment if it succeeds in doing so. the dire wolf pups, which were born in 2024, have been dubbed "wolf babies"

Fifty Years of Open Source Software Supply Chain Security

This article aims to highlight promising approaches that should be more widely used. to secure your software supply chain, you first have to understand what it is, says sam taylor. he says you should look for as-yet-unknown vulnerabilities in your open source dependencies. the nsa has recommended the use of memory-safe languages such as c#, go, java, or rust instead of c and c++. more and

Why Companies Don't Fix Bugs

https://cdn.idiallo.com/images/assets/thumb/scienthumb.jpg
A lone programmer named t0st fixed a long-standing GTA Online bug with a 13-line code tweak, cutting load times by 70%. The real issue isn't developer incompetence but corporate priorities and bureaucratic inertia that often ignore user experience.

LLMs understand nullability

https://dmodel.ai/nullability-gentle/images/robot-brain.png
Large language models like ChatGPT can write code in various domains, but their ability to understand code concepts like nullability is still unclear. Researchers have developed a probe to measure a model's understanding of nullability by analyzing its internal activations and found that models of various sizes can learn to reason about nullability, but larger models learn faster and reach ...

CDC's top laboratory on STDs is shut by Trump administration

https://www.statnews.com/wp-content/uploads/2025/04/AP23129722295008-768x432.jpg
The US government has shut down the country's premier STD lab at the CDC, leaving experts concerned about monitoring drug-resistant STDs. The lab's closure will hinder efforts to track resistance patterns and develop new treatments for gonorrhea and other STDs.

Agenda Behind the Facial Recognition Tech Used by ICE and the FBI Revealed

https://www.motherjones.com/wp-content/uploads/2025/03/503_CLEARVIEW-C_1300.jpg
A new story reveals the extent of the company's far-right origins and use of facial recognition technology. sally kohn: even as the firm tried to make inroads in the corporate world, its founders remained active in extremist circles he says - and the ice contract was canceled despite the revelations. she says the agency failed to comply with privacy requirements, and it should have known ...

Ancient Dagger Up to 2.5k Years Old W Stars/Moons/Geometric Patterns Unearthed

https://th-thumbnailer.cdn-si-edu.com/aqmJHjF8ptSUXkyVXx4JymfBLYw=/1000x750/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/ee/10/ee107e2b-6339-4609-8534-81da403775f4/487739306_1125912419338231_3545667744044372581_n.jpeg
Two metal detectorists in northern Poland discovered a 2,500-year-old ornamental dagger with intricate patterns, likely linked to the Hallstatt culture. Experts will analyze the dagger's metallic composition and wear patterns to learn more about its history and significance.

What Was Quartz?

https://www.zachseward.com/content/images/2023/03/ZMS.png
The author of Quartz, a digital media brand, reflects on its demise after being sold to G/O Media, which destroyed its editorial vision and staff. The brand's failure was due to unsustainable growth and lack of profitability.

Scaffold Level Editor

https://blog.littlepolygon.com/posts/scaffold/convex.jpg
The user is building a level editing tool called Scaffold inside Unreal Level Editor to automate workflow, enable unique gameplay, and achieve high performance. Scaffold uses convex geometry and parallel systems to expose an interactive interior design tool, gameplay systems, and data structures that are efficient by construction.

Nix Derivations, Without Guessing

The user learned how to manually generate hashes for a Nix derivation by creating an ATerm form of the derivation, hashing it, and encoding it in a specific base32 format. They successfully built a derivation by hand without any guess-and-check, following a precise recipe for building a file with a specific output path and environment variables.

Uncovering a 0-Click RCE in the SuperNote Nomad E-Ink Tablet

Researchers at PRIZM Labs discovered a vulnerability in the SuperNote A6 X2 Nomad tablet, allowing a malicious attacker to remotely install a 0-click rootkit without user interaction. They exploited a custom HTTP server, unauthenticated device-to-device file sharing, and a naming bypass to achieve this.

Decoding the 90s: Cryptography in Early Software Development (2023)

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We reverse engineered a DOS-era Hebrew-English word processor called QText to recover lost passcodes from encrypted documents. The process involved unpacking the executable, analyzing the key derivation function, and implementing a recursive decomposition algorithm to reverse the permutation function and recover the original passcode.

Writing C for Curl

https://daniel.haxx.se/blog/wp-content/uploads/2025/03/beware-snakes.jpg
The curl developers take several precautions to ensure the security and safety of their code, including using C89 for portability, enforcing a consistent code style, and treating compiler warnings as errors. They also use various tools and techniques, such as fuzz testing and code analysis, to catch and fix bugs, and have a strict process for reviewing and merging code into the master branch.

A Supermarket Bag and a Truckload of FOMO

The user had a frustrating experience with Tailwind 4, a CSS preprocessor, which crashed on their Mac Pro due to a lack of AVX2 instructions, leading to a day of debugging and a decision to switch to a new M2 machine. The user learned a valuable lesson about not combining learning new technology with delivering an app quickly and the importance of using what you already know well, and they ...

Show HN: Uncurl.dev – Convert curl commands to a shareable, executable UI

nginx/1.24.0 (Ubuntu)

Beyond Quacking: Deep Integration of Language Models and RAG into DuckDB

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
FlockMTL is a DBMS extension that integrates large language models and retrieval-augmented generation for efficient knowledge-intensive applications. It streamlines development with cost-based optimizations and resource independence through novel SQL abstractions.

A surprising enum size optimization in the Rust compiler

Rust compiler optimizes enum memory usage by storing a tag and payload. The size of an enum is the size of the largest payload plus some extra bytes for the tag.

Europe's GDPR privacy law is headed for red tape bonfire within 'weeks'

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Austrian group Noyb files complaint against ChatGPT for providing false information. Germany's chancellor is confident of a parliamentary majority to loosen debt brake despite EU-U.S. data pact issues.

Hasochism: The pleasure and pain of dependently typed Haskell programming [pdf] (2013)

Haskell’s type system has outgrown its hindley-milner roots. it now stretches to the basics of dependently typed programming - daniel schmidt et al.'s section 5 explores the use of data types to represent effective evidence' each type level value n in the nat kind has a unique representative in type natty tn. the problem did not arise for vcho

Inside One of America's Last Pencil Factories (2018)

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Show HN: Minimal MCP server in Go showcasing project architecture

https://raw.githubusercontent.com/TuanKiri/weather-mcp-server/master/assets/weather.svg
A lightweight MCP server enables AI assistants to retrieve real-time weather data using a weather API key. The server's configuration includes a command path and environment variables for the API key.

How new US tariffs are forcing Europe to rethink its entire tech stack

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US tariffs on tech imports from East Asia will increase costs for European companies using US-based cloud and AI infrastructure. This may lead to a shift towards European cloud providers and a more fragmented AI and cloud market.

Open-Source Is Just That

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The author, an open-source software contributor, criticizes users' growing sense of entitlement towards open-source projects. They argue that open-source does not automatically mean free support or maintenance.

Dark Mirror Ideologies

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The Dark Mirror ideology refers to a phenomenon where two opposing ideologies agree on factual claims but disagree on moral values, with the Dark Mirror ideology advocating for the opposite moral stance. The author argues that Dark Mirror ideologies are rare in real life and that accusing opponents of holding such ideologies is a narcissistic exercise that blinds us to who they really are and ...

John Carmack on AI in game programming

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Why Catullus continues to seduce us

https://www.newyorker.com/verso/static/thenewyorker-us/assets/thenewyorkerstamp.svg
Catullus of verona was unlike anything else in the latin canon known at that point. the poems fall into three successive groups, possibly representing three papyrus scrolls. despite the breeziness of his life, he had evidently made his mark. in "two centuries of roman poetry," a new edition of the book was published in october of this year. read it here. click here to read the

"Final Usonian Home" by Frank Lloyd Wright Completed in Ohio

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A Frank Lloyd Wright-inspired house called Riverrock has been completed in Ohio, built from Wright's 1959 plans, but its authenticity is disputed by official Wright organizations. The house features natural materials and a unique design, but was modified to meet current building regulations.

ITAPPMONROBOT (2007)

https://thedailywtf.com/content/images/authors/no-image.png
Erik, an IT admin, created a makeshift robot using an old PC to restart a faulty server by ejecting a CD ROM drive. The robot, called ITAPPMONROBOT, worked for years until the server was replaced.

It would take three years to install a speed bump. So I bought my own

https://substackcdn.com/image/fetch/w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F58305296-31c1-4771-9e59-8b4a0bc67879_1806x1538.png
The writer installed a speed bump on their street after the city took 13 months to process their application and 24 months to budget for installation. The city's Vision Zero goal to eliminate traffic fatalities by 2024 was missed, and pedestrian fatalities have continued to rise.

Global Health Threat: Antibiotic-Resistant "Superbug" Spreading in Malaysia

https://scitechdaily.com/images/Bacterial-Superbug-Concept-777x518.jpg
A drug-resistant strain of A. baumannii is spreading in a Malaysian hospital, posing a global health threat due to its resistance to key antibiotics. The strain, known as Global Clone 2, has been found to be highly resistant to multiple antibiotics, including carbapenems.

Variable duty cycle square waves with the Web Audio API

You're using the Web Audio API to create a Gameboy-style music tracker software. To recreate the Gameboy's variable duty cycle square waves, you're using either the Fourier Series or WaveShaperNode approaches.

We Designed TigerBeetle's Docs from Scratch

https://tigerbeetle.com/blog/img/authors/fabian.webp
TigerBeetle rebuilt its documentation site from scratch to provide a faster and cleaner experience for users, using a static site generator based on Zig and Pandoc to parse Markdown files. The new site has a smaller footprint, improved search functionality, and a more secure architecture, with a Content Security Policy and a Service Worker for caching and preloading doc pages.

GoboLinux 017.01: the most experimental Linux's first new release in about 5Y

GoboLinux 017.01 is a bug-fix update with critical issue resolutions, including Ncurses replacement and Freshen port to Python 3. The project now continues under Philip Pok's stewardship after Hisham Muhammad's 25-year tenure.

Saturn's moon Titan could harbor life, but only a tiny amount

https://cdn.uanews.arizona.edu/s3fs-public/styles/az_large/public/2025-04/Titan-surface.jpg.webp?VersionId=8TkrCKTehIFNQR0fWd5q9zMmoKDQLuYv&itok=HoWapFsR
Scientists studied Titan's habitability, concluding it may support simple life consuming organic material in its subsurface ocean. The ocean could hold a few pounds of biomass, but finding life would be like looking for a needle in a haystack.

The Difference Between Municipal Fire Trucks and Airport Fire Trucks

https://www.piercemfg.com/hs-fs/hubfs/Blog/Blog%20-%20The%20Difference%20Between%20Municipal%20Fire%20Trucks%20and%20Airport%20Fire%20Trucks/munipcal-fire-truck-and-airport-fire-truck.jpg?width=1720&height=800&name=munipcal-fire-truck-and-airport-fire-truck.jpg
Firefighters use different types of fire trucks for various environments, including urban, rural, and airport settings. Each type of truck has unique configurations and attributes to meet the demands of its specific situation.

Bluesky's Quest to Build Nontoxic Social Media

https://media.newyorker.com/photos/67ec3fc3736af055767551a0/1:1/w_2560%2Cc_limit/r45833.jpg
Bluesky, a decentralized social network, has become by far the largest social-networking platform. the company reached out to twitter to ask whether musk would continue to fund the protocol. if the system proves successful, there will eventually be many hotels operating on bluesky's app. blueskiy' spokesman: "bluesky is... the next big thing in social media." the founders say they are ...

Ask HN: Is Hacker News avoiding criticism of Trump?

Some users think Hacker News is failing to uphold its intellectual standards by not actively challenging Trump's statements and actions, but others argue that the site's rules against political discussion are necessary to maintain thoughtful discourse. Users are divided on whether the site should allow more political discussion, with some arguing that it would lead to chaos and others saying ...

Food fermentation in space: Opportunities and challenges

The iss has distinct environmental conditions to those found on earth. a cheesy aroma was detected in the top and middle portions of the misos on the space station compared to the other portions - but not in any of them – despite the differences in flavor based on sensory analysis s. this suggests that certain strains of bacillus may have entered into the misso in this way. histidine is more ...

Gaussian Splatting Alternative: WebGL Implementation of Nvidia's SVRaster

https://opengraph.githubassets.com/320f393f33fa25c2d44259e3b5abb7eadacbf4d0c873075baa89f7f455c45eb5/samuelm2/svraster-webgl
A WebGL viewer for sparse voxel scenes is available at vid2scene.com/voxel, allowing interactive visualization of voxel radiance fields. The viewer uses a distance-based sorting approach and has room for performance improvements, particularly in the fragment shader.

Gemini Live with camera and screen sharing capabilities

https://storage.googleapis.com/gweb-uniblog-publish-prod/images/march_ai.max-1200x416.format-webp.webp
Gemini Live allows users to have natural conversations with Gemini in 45 languages, using camera or screen input. It offers real-time advice on organization, creativity, problem-solving, shopping, and content feedback.

Watch Antimatter Fall: Scientists Capture Gravity's Pull with a 3840MP Camera

https://scitechdaily.com/images/Optical-Anti-Matter-Imager-777x518.jpg
CERN scientists built a 3840 MPixel detector using mobile camera sensors to track antihydrogen's fall in gravity with real-time precision. This Optical Photon and Antimatter Imager (OPHANIM) could revolutionize antimatter experiments with unprecedented resolution.

Trade, Tariffs, and Tech

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A war over Taiwan would severely disrupt global supply chains, causing economic devastation regardless of who wins. The current economic system, dominated by China, is unsustainable and may collapse by force, making Trump's tariffs a valid but blunt attempt to remake the system.

The Troll Hole Adventure

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Kenneth Lochner developed the Dartmouth time-sharing system and later founded Interact Electronics to create the Interact Model One, a personal computer with color graphics and low price. The Interact Model One failed to sell well, but its technology was later used in the Victor Lambda, a French computer that was successful in the market.

Apple's mouse is so bad Tim Cook uses another brand at work (2024)

https://glassalmanac.com/wp-content/uploads/2025/04/Apples-mouse-is-so-bad-Tim-Cook-uses-another-brand-at-work.jpg
Apple's Magic Mouse has design flaws, including a bottom charging port, which may be why CEO Tim Cook uses a Logitech MX Master 3. The MX Master 3 is a more practical choice for professionals due to its ergonomic design and efficient charging.

Like cursor, but for blogging: a weekend project

https://www.maximepeabody.com/_next/image?url=https%3A%2F%2Flh7-rt.googleusercontent.com%2Fdocsz%2FAD_4nXfOWBIE5xoguGPQ43qqt76068L6N6zhRddpp174v1_cIFGNOc2gckH5KkQyEsjZHll5hJpyrnp85zU49L0kaqufMIlsoXvm9EZJd6ZyCD_UJ6wb33rHU9XTDK1O5tAoFM0Rsa15%3Fkey%3DxaGE1nk4cHpDIIqwSJqrqcI6&w=2048&q=75&dpl=dpl_DCPomrEovnq1JdLE9fN4scfedHkr
You're creating a tool to help with writing a blog on AI topics, aiming to write more efficiently without replacing your personal tone. The tool includes a markdown editor, AI features for suggestions and research, and a simple UX with a tool panel.

In React {Transitions} = F(state)

https://jordaneldredge.com/uploads/2025/transitions-f-of-state.png
React apps can be thought of as state machines where UI is a function of state and valid transitions. This mental model helps guard against invalid updates, especially with asynchronous or concurrent updates.

Circling the Good

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David frum: there are no moral truths toward which progress can be measured. he says some intuitions against doing what will have the best consequences are wrong. it's better to save more rather than fewer people, if we can access new moral reasons, as nagel argues. the larger question is whether we are capable of making moral progress, says frank mccartney - "the arc of the moral universe is long

Show HN: Soundscapes and Lofi Player

Calm soundscapes at your fingertips. Easy to use, no ads, and no tracking.

Open Source Is Geopolitical Now

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Open source software has become a geopolitical topic as governments and companies recognize its strategic advantage in controlling key technologies. China has been embracing open source for over a decade to reduce its dependence on US technology and level the playing field.

Hg-Git: Git back end for mercurial

Push and pull from Git!

Messier Marathon

https://upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Messier_objects_equirectangular_plot.svg/500px-Messier_objects_equirectangular_plot.svg.png
A Messier marathon is an attempt to find as many Messier objects as possible during one night, usually organized by amateur astronomers. It involves observing 110 relatively bright deep-sky objects from sundown to sunrise, typically at low northern latitudes.

Remembering John Conway's FRACTRAN, a ridiculous, yet surprisingly deep language

https://raganwald.com/assets/images/fractran/john-conway-1993.jpg
Fractran, a programming language, is the subject of this essay. john sutter: it's one of the finest examples of that skill. it may help us one day determine whether the collatz conjecture is provably true, or undecidable - he says if we use it to ace the programming interview, we'll win the deal despite the crap-tastic proposal... js

Choviva: Chocolate replacement with less CO2 emissions

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ChoViva is a cocoa-free chocolate alternative made from sunflower seeds with a lower carbon footprint. It's a sustainable ingredient with a similar taste and texture to chocolate, made from 100% natural ingredients.

Git's initial commit

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+ contents of a tree, the same way you can trust the contents of a blob, + identifies a known state - just not a state that you may want to trust. + out a single email that tells the people the name (SHA1 hash) of the top + lost any information as long as you have the name of the tree that it + /* Read and unpack a sha1 file into memory, write memory to a sha1 file */

The Best Programmers I Know

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To be one of the best developers, read the reference of the tools you use and truly understand them. Great engineers are curious, patient, and dedicated, always learning and willing to help others.

Show HN: Kahuna, the IndexedDB-Manager Webextension

https://camo.githubusercontent.com/46cace74f0fbcb58668c12f7095627a6199d01dd804ad18024100c8026df860d/68747470733a2f2f68756d6d696e676d652e6769746875622e696f2f6b6168756e612d646f63732f6173736574732f73637265656e73686f74732f6b6168756e612d61742d776f726b2d3139323078313230302e706e67
Kahuna is a browser extension for Firefox and Chromium to manage IndexedDB databases. It allows creating, modifying, and querying databases, as well as importing and exporting data.

GitMCP: Transforms any GitHub project into an MCP endpoint

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GitMCP is a free, open-source service that transforms GitHub projects into remote Model Context Protocol endpoints for AI access. It provides seamless documentation access with semantic search capabilities and zero setup required.

The speech police: Chairman Brendan Carr and the FCC's news distortion policy

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Fcc chairman brendan carr is taking a hard line against broadcast stations accused of bias. but his two immediate predecessors said punishing stations based on the content of news programs would violate the first amendment right to free speech. '#34;the case isn't close to being settled right now,' an anonymous fcc official was quoted as saying. the u.s. attorney in california said he

Privacy at the Border: A Technical Guide to Securing Your Data and Devices

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US Customs and Border Protection agents can search devices at the border with minimal oversight, raising concerns about digital privacy. Travelers can protect themselves by using clean devices, encrypting data, and minimizing sensitive information.

Show HN: I turned GitHub contributions into a retro battle game

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Challenge famous developers in an epic battle of GitHub contributions! A retro arcade-style game with worldwide multiplayer that pits you against the coding legends.

PHP isn't dead. Laravel is just bloated. Here's what I made instead

https://repository-images.githubusercontent.com/878182744/2e62303f-a10a-4ac0-8fff-c2f4e56600f0
Dataphyre is a highly scalable PHP framework for building web apps and global platforms with infinite scalability and modular ecosystem. It features advanced security, full-text search, and templating system with native CDN support.

Astrophotographers Help Scientists Solve Mystery of 'Sprite Fireworks'

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Astrophotographers Angel An and Shuchang Dong captured over 100 red sprites over the Himalayas on May 19, 2022, helping scientists understand these elusive lightning forms. Researchers used the images to link 70% of the sprites to their corresponding lightning events, revealing complex interactions in the upper atmosphere.