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MIT engineers develop a magnetic transistor for more energy-efficient electronics

Transistors, the building blocks of modern electronics, are typically made of silicon. Because it’s a semiconductor, this material can control the flow of electricity in a circuit. But silicon has fundamental physical limits that restrict how compact and energy-efficient a transistor can be.MIT researchers have now replaced silicon with a magnetic semiconductor, creating a magnetic transistor that could enable smaller, faster, and more energy-efficient circuits. The material’s magnetism strongly

This Week’s Awesome Tech Stories From Around the Web (Through April 18)

RoboticsPhysical Intelligence, a Hot Robotics Startup, Says Its New Robot Brain Can Figure Out Tasks It Was Never TaughtConnie Loizos | TechCrunch“Physical Intelligence, the two-year-old, San Francisco-based robotics startup that has quietly become one of the most closely watched AI companies in the Bay Area, published new research Thursday showing that its latest model can direct robots to perform tasks they were never explicitly trained on—a capability the company’s own researchers say c

Mental math's shortcut—pupil dilation suggests people start solving before all numbers are in

People often solve simple arithmetic problems, such as basic addition, subtraction, multiplication or division, in their minds. The precise mental processes they rely on to solve these problems, however, are not entirely clear. Researchers at Université de Bordeaux and UCLouvain recently tried to better understand how humans tackle simple math mentally by tracking the size of their pupils.

Black hole jets measured for first time and rival the power of 10,000 suns

Scientists have captured stunning new insights into one of the universe’s most powerful phenomena—black hole jets—by using a planet-sized network of radio telescopes. Focusing on Cygnus X-1, one of the first known black holes, they measured jets blasting out with the energy of 10,000 Suns and moving at half the speed of light. By watching these jets get pushed and bent by the fierce stellar winds of a nearby supergiant star, researchers could calculate their true power for the first time.

Universal quantum protocol extracts maximum work without knowing a system's state in advance

A new study published in Nature Communications has shown that in the asymptotic limit, extracting the maximum possible work from many copies of a quantum system does not require knowing exactly what state that system is in.

10 More Future Technologies That Will Transform Daily Life: AI, Quantum Tech & Beyond

Future technology trends are reshaping daily life through AI, quantum sensors, brain interfaces, and biofabrication innovations that transform how we live.

Knowledge Nugget: India’s first quantum facility in Amravati — what UPSC aspirants must know

India launches indigenous quantum computing facility at Amaravati under National Quantum Mission, aiming to become an international hub with advanced superposition and entanglement technologies.

New technique measures quantum entanglement inside solid materials

For decades, confirming quantum entanglement meant isolating a handful of particles, cooling them to near absolute zero, and ...

Show HN: Marky – A lightweight Markdown viewer for agentic coding

Hey HN,In this age of agentic coding I've found myself spending a lot of time reviewing markdown files. Whether it's plans or documentation that I've asked my agent to generate for me, it seems that I spend more time reading markdown than code.I've tried a few different solutions to make it easier to read such as Obsidian however I've found their Vault system to be quite limiting for this use case and I've found TUI solutions to not quite be as friendly to read as I

Ask HN: What pricing model works for high COGs side project?

So I've been working on this app that's a dashboard + taskbar widget for commute times. I made it for myself so I wouldnt have to search for it all the time by googling it. I was honestly surprised it didnt really exist but the reason is now obvious to me. It's because live traffic data is super expensive. Around $2.50 / 1k calls from my provider.So each round trip route would cost around $4/month (2 calls per route * one call per hour * 24 hours * 30 days) This is quite

Show HN: Xata, open-source Postgres platform with copy-on-write branches

Hi HN,This is Tudor from Xata. You can think of Xata as an open-source, self-hosted, alternative to Aurora/Neon. Highlight features are:- Fast copy-on-write branching.- Automatic scale-to-zero and wake-up on new connections.- 100% Vanilla Postgres. We run upstream Postgres, no modifications.- Production grade: high availability, read replicas, automatic failover/switchover, upgrades, backups with PITR, IP filtering, etc.You can self-host it, or you can use our [cloud service](https:&#x

Show HN: Mabon – AI agent that finds jobs continuously and shows strong matches

Hey HNI'd love to get your feedback on Mabon.ai.I think job search is quite tedious for most people. They scan or subscribe to multiple job boards that often send jobs based on just a few keywords, without actually understanding the user's intent or what kind of job they 'really' want. Most of these job boards also seem to optimize for sending a high volume of matches rather than being targeted.Mabon first understands the user's background and preferences, and then finds

Show HN: Sfsym – Export Apple SF Symbols as Vector SVG/PDF/PNG

I found myself reaching for SF Symbols' 'Copy Image As…' quite often during agentic design sessions, so I made a command-line tool that the agent can use by itself. It exports Apple SF Symbols as SVG, PDF, or PNG.The vector paths come directly from macOS's symbol renderer. Internally it reaches a private ivar on NSSymbolImageRep to get the CUINamedVectorGlyph, draws into a CGPDFContext, then walks the PDF content stream back out as SVG `d` commands. The output matches what th

Ask HN: Agents Craving Context

Hey, I was an early adopter of the Cursor IDE and pretty much installed it day 1 of it's public release. Like many I've been using LLMs to help accelerate the writing of code in my own company and side projects and have been quite optimistic and satisfied with the quality and experience of using the Cursor IDE chat -> composer -> agents to enhance the developer experience.However, recently it seems like there has been a shift in how agents work (I am mainly referring to using Cur

Bright quantum light emission achieved at room temperature in 2D semiconductors

A joint research team led by Professor Park Kyoung-Duck and Associate Director Suh Yung Doug of the Center for Multidimensional Carbon Materials within the Institute for Basic Science (IBS) has succeeded in realizing a high-efficiency quantum light source that emits bright lights even at room temperature. The study is published in the journal Science Advances.

Artificial neurons successfully communicate with living brain cells

Engineers at Northwestern University have taken a striking leap toward merging machines with the human brain by printing artificial neurons that can actually communicate with real ones. These flexible, low-cost devices generate lifelike electrical signals capable of activating living brain cells, a breakthrough demonstrated in mouse brain tissue.

Total solar eclipse led to seismic quiet for cities within its path

As the Moon swallowed the Sun during the April 8, 2024, total solar eclipse, something remarkable happened on the ground—cities went eerily quiet. Scientists analyzing seismic data found that human-generated vibrations, usually caused by traffic, construction, and daily activity, dropped sharply during totality. The effect was so pronounced that it created a clear “seismic hush” across urban areas directly in the eclipse’s path, before quickly rebounding afterward.

Quantum AI just got shockingly good at predicting chaos

Researchers have shown that blending quantum computing with AI can dramatically improve predictions of complex, chaotic systems. By letting a quantum computer identify hidden patterns in data, the AI becomes more accurate and stable over time. The method outperformed standard models while using far less memory. This could have big implications for fields like climate science, energy, and medicine.

Norwegian Man Cured of HIV by His Brother’s Stem Cells

Fewer than 10 people worldwide have eradicated the virus with stem cells. But this case was special—no one knew his brother’s cells carried a protective mutation until transplant day. When the 63-year-old man received a bone marrow transplant from his brother, he got a two-for-one deal. The therapy was meant to tame a life-threatening blood disorder. But it also wiped out all signs of HIV, which he had been battling for 14 years.Called the Oslo patient, he joins a small group of people wit

Quantum ‘Jamming’ Explores the Truly Fundamental Principles of Nature

For the past few decades, researchers have understood that quantum computers should eventually be able to crack the widely used codes that secure much of the digital world. To protect against this fate, they’ve spent years developing new codes that appear to be safe from future safecrackers armed with quantum computers. At the same time, they’ve also devised ingenious ways to use the rules of…Source