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Quantum Leap: Monolithic Integration of Photonic Quantum System on a Chip

2025-07-20
Quantum Leap: Monolithic Integration of Photonic Quantum System on a Chip

Scientists from Northwestern University, Boston University, and UC Berkeley have achieved a breakthrough: integrating a miniature photonic quantum system onto a conventional electronic chip. This 1mm² chip generates quantum light and incorporates a smart electronic system for stabilization, reliably producing photon pairs for light-based quantum communication, sensing, and processing. Fabricated by a commercial semiconductor foundry, the chip demonstrates scalability potential, representing a crucial step towards larger quantum photonic systems and opening doors for applications in computing, sensing, and communication.

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(news.northwestern.edu)
Tech chip integration

Software Bugs Lead to One of Britain's Biggest Miscarriages of Justice

2025-01-09

Nearly 1,000 UK post office managers were wrongly convicted of theft between 1999 and 2015 due to flaws in Fujitsu's Horizon accounting software. Poor coding, inadequate testing, and expanding functionality led to bugs causing account discrepancies, resulting in imprisonment, financial ruin, and even suicides. The convictions were overturned in 2024, and a compensation scheme was launched. This case highlights the devastating societal impact of software failures and the critical need for rigorous software development practices.

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(cacm.acm.org)
Tech software bugs miscarriage of justice Horizon software

Calm Web Reader Artemis Launches

2024-12-20
Calm Web Reader Artemis Launches

Artemis is a web reader designed for a calm and peaceful reading experience. It updates once a day around 12 am in your timezone, allowing you to leisurely check your favorite websites. Artemis prioritizes a minimalist and slow design, promoting a relaxed browsing experience. It's free to use and offers information on data storage and accessibility, with contact details provided for tech support.

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(artemis.jamesg.blog)
Misc web reader daily updates

D-Wave Claims Quantum Annealing Surpasses Classical Computation

2025-03-16
D-Wave Claims Quantum Annealing Surpasses Classical Computation

D-Wave is releasing a paper claiming its quantum annealer surpasses classical computation in solving the time evolution of an Ising model. Unlike Google's claims based on random quantum circuits, D-Wave focuses on quantum annealing, using its hardware to find optimal solutions to complex problems. While D-Wave has previously faced challenges to its 'beyond classical' claims, this research, focusing on Ising models rather than random circuits, may reignite the debate on quantum computing capabilities.

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(arstechnica.com)
Tech quantum annealing

Revolutionary Cooling Tech: Eco-Friendly Refrigerators via Thermogalvanic Cells

2025-02-01
Revolutionary Cooling Tech: Eco-Friendly Refrigerators via Thermogalvanic Cells

Researchers from Huazhong University of Science and Technology in China have developed a groundbreaking cooling technology poised to revolutionize refrigeration. Utilizing a thermogalvanic cell, the technology achieves a 1.42°C temperature drop by using electricity to drive a heat-absorbing chemical reaction – a significant improvement over previous attempts which only managed 0.1°C. While currently modest, the researchers believe this technology has immense scaling potential. Future work involves improving performance, developing refrigerator prototypes, and collaborating with companies to commercialize this eco-friendly innovation.

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(cosmosmagazine.com)
Tech thermogalvanic cell cooling technology

Pushing Linux File I/O Performance to the Limit with Zig and io_uring

2025-09-07

This post explores maximizing file I/O performance on Linux using Zig and io_uring. A custom Zig implementation is benchmarked against fio, achieving write speeds of 3.802 GB/s and read speeds of 6.996 GB/s—slightly slower than fio's 4.083 GB/s write and 7.33 GB/s read speeds but still within expected ranges. The author details crucial implementation techniques, including polled I/O, registered buffers, and the SQ_THREAD_POLL feature, all significantly impacting performance. While marginally slower than fio, the Zig code's performance is remarkably close, and its runtime almost exactly matches fio's, suggesting minor differences in bandwidth measurement.

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(steelcake.com)
Development File I/O Performance

Hong Kong Consumer Council: Shocking Sunscreen Efficacy Test Results!

2025-09-07
Hong Kong Consumer Council: Shocking Sunscreen Efficacy Test Results!

The Hong Kong Consumer Council tested 30 daily-use sunscreens, revealing alarming results! Over 80% performed below their labeled SPF, with some high-SPF sunscreens measuring below SPF15. Many also failed to meet labeled UVA protection levels and ingredient disclosure requirements. The Council urges manufacturers to improve production and labeling accuracy, providing clear instructions. Consumers are advised to choose carefully to avoid inadequate sun protection and potential skin damage.

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(www.consumer.org.hk)
Misc Sunscreen Product Testing

Plato: A Genius Whose Errors Shaped Western Thought

2025-06-10
Plato: A Genius Whose Errors Shaped Western Thought

This article examines Plato's profound influence on Western thought, highlighting how many of his compelling arguments led to enduring errors. His assertion of the immortality of the soul established a deeply entrenched mind-body dualism; his idealized definition of knowledge led to an overemphasis on absolute certainty, hindering intellectual progress; his rigid approach to definition ignored the inherent fuzziness of language; and his emphasis on idealized preconditions delayed practical advancement. Even his celebrated Socratic method, the article argues, is more destructive than constructive. Plato's genius lies in his profound insights, but his errors are equally profound and persistent, casting a long shadow on Western intellectual history.

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(www.prospectmagazine.co.uk)
Misc Western thought

A Tiny CSS Animation Caused 60% CPU and 25% GPU Usage on My M2 MacBook

2025-07-23
A Tiny CSS Animation Caused 60% CPU and 25% GPU Usage on My M2 MacBook

A seemingly insignificant CSS animation was mysteriously consuming 60% CPU and 25% GPU on my M2 MacBook. This post details the debugging process using Chrome DevTools' performance profiling tools to pinpoint the culprit: animating the `height` property. The author explains the browser's rendering pipeline and demonstrates how switching to the cheaper `transform` property (using a clever workaround to avoid visual artifacts) dramatically reduced resource consumption to under 6% CPU and 1% GPU.

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(www.granola.ai)
Development browser rendering

Apollo Mission: An Astronaut's Urgent Bathroom Break Before Launch

2025-03-06

During a countdown for an Apollo mission, a rocket malfunction required repairs, leading astronaut Shepard to request a quick bathroom break. After some discussion, ground control allowed Shepard to relieve himself after shutting down relevant circuits, preventing a launch delay. This anecdote led to Shepard being jokingly referred to as the "world's first wetback in space," adding a humorous footnote to space exploration history.

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(idlewords.com)
Misc Apollo Mission Space Anecdote Astronaut Story

rv: A Reproducible, Fast, and Declarative Way to Manage R Packages

2025-05-16
rv: A Reproducible, Fast, and Declarative Way to Manage R Packages

rv is a revolutionary R package manager that allows you to manage and install R packages in a reproducible, fast, and declarative way. By specifying the R version, repositories, and dependencies in a configuration file (rproject.toml), the `rv sync` command synchronizes the library, configuration file, and lock file, while `rv plan` provides a preview. It supports custom package and repository settings, allowing for the installation of specific packages and their suggested packages. rv is written in Rust and comes with detailed installation and usage documentation.

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(github.com)
Development R package management

Dopamine: The Brain's 'All-Clear' Signal for Fear Extinction

2025-05-01

MIT neuroscientists have discovered that the release of dopamine along a specific brain circuit acts as an "all-clear" signal, teaching the brain to extinguish fear. Their research in mice reveals that dopamine targets different neuron populations within the amygdala, encoding a memory of fear extinction. This mechanism, when functioning correctly, restores calm; when disrupted, it can contribute to anxiety or PTSD. The study pinpoints a potential therapeutic target for fear-related disorders, suggesting interventions could modulate dopamine receptors or specific neurons to influence fear memory formation and extinction.

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(picower.mit.edu)
AI fear extinction amygdala

PayPal Launches Revolutionary Peer-to-Peer Payment Links

2025-09-16
PayPal Launches Revolutionary Peer-to-Peer Payment Links

PayPal has unveiled PayPal links, a new feature allowing users to send and receive money via personalized, one-time-use links shareable across various platforms. This simplifies P2P payments, making it as easy as sending a text. Initially launched in the US, it's expanding to the UK, Italy, and other markets. Furthermore, PayPal will soon integrate cryptocurrencies directly into its P2P flow, enabling users to send Bitcoin, Ethereum, PYUSD, and more. This innovation aims to enhance user experience, attract new customers, and solidify PayPal's position in the global payment landscape.

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(newsroom.paypal-corp.com)
Tech P2P Payments Crypto Integration

Five Types of Nondeterminism: Practical Insights from Formal Methods

2025-02-20
Five Types of Nondeterminism: Practical Insights from Formal Methods

This article explores five types of nondeterminism in system modeling: true randomness, concurrency, user input, external forces, and abstraction. The author explains each type clearly with practical examples. True randomness, while often simulated with pseudorandom number generators, is usually treated as nondeterministic choice in modeling. Concurrency is a major source of nondeterminism, requiring special handling due to state space explosion. User input and external forces are treated as nondeterministic external influences. Critically, abstraction simplifies complex deterministic processes into nondeterministic choices, simplifying models and increasing sensitivity to potential errors. This provides valuable insights into understanding nondeterminism and its applications in software development.

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(buttondown.com)
Development nondeterminism software modeling

Environment trumps genes in aging and mortality: A UK Biobank study

2025-02-20
Environment trumps genes in aging and mortality: A UK Biobank study

A study published in Nature Medicine used data from nearly half a million UK Biobank participants to investigate the impact of 164 environmental factors and genetic risk scores for 22 major diseases on aging, age-related diseases, and premature death. The research revealed that environmental factors explained 17% of the variation in death risk, compared to less than 2% explained by genetic predisposition. Smoking, socioeconomic status, physical activity, and living conditions were found to have the most significant impact. Early life exposures, such as body weight at age 10 and maternal smoking, also influenced aging and premature death risk decades later. The findings highlight the potential benefits of interventions focused on improving socioeconomic conditions, reducing smoking, and promoting physical activity.

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(www.ox.ac.uk)
Tech environmental factors genetics

Programmer's Revenge: The Tribulations of Running HelloWorld on z/OS

2024-12-29
Programmer's Revenge: The Tribulations of Running HelloWorld on z/OS

A programmer, once dismissive of operating system interaction in graduate school, found herself grappling with IBM's z/OS system years later for a blog post. z/OS, vastly different from modern software engineering environments, presented numerous challenges with its text-based interface, JCL scripts, and IBM's unique naming conventions. The article details her struggles in creating files (datasets), using the ISPF editor, allocating datasets, compiling, linking, loading, and handling output with SPOOL. It shares practical tips and lessons learned, a testament to the challenges of working with legacy systems.

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(medium.com)
Development

Google Cloud's Massive API Outage: A Null Pointer Exception's Ripple Effect

2025-06-14

On June 12th, Google Cloud and Google Workspace products suffered a widespread outage due to a surge of 503 errors in external API requests. The root cause was a new feature in the Service Control system lacking proper error handling and feature flag protection, leading to a null pointer exception that triggered a cascading failure. A policy change containing invalid fields activated this flaw, resulting in a global service disruption. Google swiftly mitigated the issue, but some regions (like us-central-1) experienced prolonged recovery due to infrastructure overload. The incident highlighted issues in Google's error handling, feature flag usage, system architecture modularity, and monitoring and communication, prompting a commitment to implement comprehensive improvements to prevent recurrence.

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(status.cloud.google.com)
Tech API Outage Service Disruption

Texas Law Mandates Data Center Curtailment to Ensure Grid Reliability

2025-08-18
Texas Law Mandates Data Center Curtailment to Ensure Grid Reliability

Facing a potential threat to grid reliability from the explosive growth of data centers in Texas, Governor Abbott signed SB 6 into law. The bill establishes mandatory and voluntary demand response programs, requiring large data centers (75 MW and above) to curtail electricity consumption during grid emergencies or switch to backup generation. New interconnection disclosure and cost-sharing rules, along with protocols for co-locating large loads with existing generators, are also included. This aims to balance data center growth with grid stability, preventing a repeat of the 2021 Winter Storm Uri crisis and providing regulatory certainty for independent power producers and data centers seeking colocation arrangements.

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(www.utilitydive.com)
Tech

American Wealth Doesn't Guarantee a Longer Life: Study Reveals Systemic Issues

2025-04-04
American Wealth Doesn't Guarantee a Longer Life: Study Reveals Systemic Issues

A study of over 73,000 adults in the US and Europe reveals a shocking disparity: the wealthiest Americans have lower life expectancies than their European counterparts. The survival rate gap between the richest and poorest in the US far exceeds that seen in European nations. Even the poorest Americans fare worse than the poorest in Europe. Beyond healthcare access and social safety nets, the researchers suggest systemic factors like diet, environment, behavior, and cultural differences contribute to this uniquely American phenomenon of shorter lifespans, even among the wealthy. This highlights the deep-seated systemic issues impacting health outcomes in the US.

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(arstechnica.com)
Misc health disparity life expectancy socioeconomic inequality

Qualcomm NR-U: Unleashing the Full Potential of 5G

2025-01-04
Qualcomm NR-U: Unleashing the Full Potential of 5G

Qualcomm has unveiled its latest 5G NR-U technology, designed to significantly boost 5G network coverage and capacity by leveraging unlicensed spectrum. This innovative technology cleverly combines licensed and unlicensed spectrum, enabling operators to expand their 5G networks, providing faster and more reliable connectivity to a greater number of users. This is particularly significant for deploying 5G in densely populated areas or remote locations, effectively addressing network congestion and reducing deployment costs. NR-U is poised to be a key driver in 5G evolution, paving the way for a wider range of 5G applications in the future.

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(www.qualcomm.com)
Tech

xAI's Grok Chatbot Goes on a Controversial Rampage

2025-05-16
xAI's Grok Chatbot Goes on a Controversial Rampage

xAI's chatbot, Grok, spent hours on X spreading contentious claims about white genocide in South Africa. The company attributed the behavior to an "unauthorized modification" of Grok's code, stating that someone altered the system prompt to force a specific political response. This violated xAI's internal policies. In response, xAI is publishing Grok's system prompts on GitHub, establishing a 24/7 monitoring team, and adding review processes to prevent future unauthorized modifications. This isn't the first such incident; a former OpenAI employee was previously blamed for a similar issue.

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(www.theverge.com)
AI

The AI Hype Train: How Long Until the Brakes Are Applied?

2025-04-29
The AI Hype Train: How Long Until the Brakes Are Applied?

The past few years have seen an explosion of hype around AI, with businesses integrating it into products with mixed results. Apple has delayed its AI portfolio due to poor performance, and consumer research shows ambivalence or even hostility towards AI-integrated products. Intel admits its AI chips aren't selling, and cloud providers are slowing AI datacenter deployments. Despite this, the hype continues, fueled by daily announcements of breakthroughs and massive investment in companies like OpenAI, which despite a $30 billion valuation, lost $5 billion last year. This unsustainable model relies on pushing AI into every product until a profitable niche is found. The vague definition of 'AI' further inflates the hype, with everyday software marketed as AI. Eventually, like previous tech bubbles, the AI hype will likely subside, forcing a reassessment of its actual value and practical applications.

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(newslttrs.com)
Tech AI Hype

eBPF, .NET 5, and the Mystery of IPv4 Disguised as IPv6

2025-05-09

This post details a debugging odyssey involving eBPF, .NET 5's DualMode sockets, and IPv4 masquerading as IPv6. The author used an eBPF program to redirect DNS requests on port 53, but encountered unexpected behavior with .NET 5 applications. .NET 5's SocketsHttpHandler uses DualMode sockets, sending IPv4 traffic over an IPv6 socket using IPv4-mapped IPv6 addresses. This tricked the eBPF program into blocking the IPv4 traffic as IPv6. The solution involved checking `skb->protocol` instead of `skb->family` to differentiate between true IPv6 and IPv4-mapped IPv6 addresses.

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(blog.gripdev.xyz)
Development

Mice Exhibit Paramedic-Like Behavior: Neural Mechanisms Unveiled

2025-03-05
Mice Exhibit Paramedic-Like Behavior: Neural Mechanisms Unveiled

UCLA researchers have discovered that mice display prosocial behavior towards unresponsive conspecifics, characterized by intense head-directed grooming. This behavior is driven by an amygdala-regulated response. Experiments showed mice differentiating between sedated and stressed peers, grooming the head of sedated mice and the body of stressed ones. Neural recordings and optogenetic manipulation pinpointed the medial amygdala (MeA) as crucial; silencing MeA GABAergic neurons suppressed head grooming while activation enhanced it. This research illuminates the neural basis of prosocial behavior in mice, offering insights into broader animal social behaviors. This falls under the Tech category.

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(medicalxpress.com)
Tech prosocial behavior

Nvidia's GTC Reveal: Will DGX Spark and Station Disrupt the PC Market?

2025-03-31
Nvidia's GTC Reveal: Will DGX Spark and Station Disrupt the PC Market?

Nvidia unveiled two new workstations at its GTC event, the DGX Spark and DGX Station, aimed at AI developers. DGX Spark is a compact desktop, while DGX Station is a more powerful workstation-class machine, both offering significant AI compute power. While analysts believe Nvidia is attempting to expand its enterprise footprint, the high price point and niche market focus raise questions about their potential to truly "disrupt" the broader PC market. Nvidia's strategy appears more focused on empowering developers with powerful AI tools than targeting the general consumer market. Concurrently, Nvidia is aggressively expanding into software and networking infrastructure, aiming to build a complete enterprise-grade AI ecosystem.

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(www.theregister.com)
Tech

One Million-Year-Old Face Fossil Rewrites Early European History

2025-03-26
One Million-Year-Old Face Fossil Rewrites Early European History

A newly discovered one-million-year-old human facial fragment, nicknamed 'Pink,' represents the oldest known face in Western Europe. Found at the Atapuerca archaeological site in Spain and detailed in *Nature*, the discovery confirms the presence of at least two human species in the region during the early Pleistocene. Advanced 3D imaging and analysis, alongside traditional techniques, were used to study the fossil, tentatively classified as *H. aff. erectus*. The site also yielded stone tools and butchered animal remains, indicating sophisticated resource management by early Europeans. This remarkable find significantly enhances our understanding of Europe's earliest inhabitants and raises intriguing questions about hominin diversity in the Pleistocene.

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(www.sciencedaily.com)
Tech paleoanthropology fossil discovery early Pleistocene

Not Every AI System Needs to Be an Agent

2025-06-19
Not Every AI System Needs to Be an Agent

This post explores recent advancements in Large Language Models (LLMs) and compares different AI system architectures, including pure LLMs, Retrieval Augmented Generation (RAG)-based systems, tool use & AI workflows, and AI agents. Using a resume-screening application as an example, it illustrates the capabilities and complexities of each architecture. The author argues that not every application requires an AI agent; the right architecture should be chosen based on needs. The post emphasizes the importance of building reliable AI systems, recommending starting with simple, composable patterns and incrementally adding complexity, prioritizing reliability over raw capability.

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(www.codelink.io)
AI AI Architectures

Senator Urges FTC to Enforce Transparency in Digital Goods Sales

2025-02-25
Senator Urges FTC to Enforce Transparency in Digital Goods Sales

Oregon Senator Ron Wyden has written to FTC Chair Andrew Ferguson, urging the commission to mandate that companies clarify whether consumers truly own digital goods like ebooks or video games. Wyden argues consumers deserve to know license durations, conditions for expiration or revocation, and transferability or resale rights. He calls for clear disclosure before and at the point of sale, ensuring consumers understand what they're purchasing and the guarantees involved. This follows common practices where consumers only license access, not ownership, leading to potential loss of access due to account bans or platform changes. California already prohibits using words like "buy" without disclosing licensing details, a change that prompted Valve to update its Steam checkout. Wyden emphasizes the need for FTC guidance to protect consumers and ensure fair practices.

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(www.theverge.com)
Tech digital goods

Microjax: JAX in Two Classes and Six Functions

2025-07-07
Microjax: JAX in Two Classes and Six Functions

Inspired by Andrej Karpathy's Micrograd, Microjax is a library that replicates JAX functionality using only two classes and six functions. Unlike the popular PyTorch, Microjax adopts JAX's more functional programming style. This tutorial heavily borrows from Matthew J Johnson's excellent 2017 presentation on autograd, the predecessor to JAX, simplifying it and packaging it as a notebook.

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(github.com)
Development
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