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Why Semantic Layers Matter (and how to build one with DuckDB)

news.ycombinator.com Unknown 2025-11-14 06:49:15

Many ask themselves, "Why would I use a semantic layer? What is it anyway?" In this hands-on guide, we’ll build the simplest possible semantic layer using just a YAML file and a Python script—not as the goal itself, but as a way to understand the value of semantic layers. We’ll then query 20 million NYC taxi records with consistent business metrics executed using DuckDB and Ibis. By the end, you’ll know exactly when a semantic layer solves real problems and when it’s overkill. It's a topic that

Topics: data layer null semantic yes

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A Super-Energetic Neutrino That Reached Earth in 2023 Has Been Confirmed to Be Real. But Where Did It Come From?

wired.com Jorge Garay 2025-11-14 06:00:00

In February 2023, a cosmic particle detector housed deep in the Mediterranean Sea recorded the arrival of a neutrino with approximately 20 to 30 times more energy than any other neutrino documented previously. Labelled KM3-230213A, the particle had a calculated energy of 220 petaelectronvolts (PeV), far greater than the 10 PeV of the previously most energetic neutrino. The finding generated a lot of excitement among physicists, but raised also many questions. Neutrinos are the most abundant par

Topics: cosmic energetic energy neutrino neutrinos

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Ticket reseller sued for illegally buying over 2,000 Taylor Swift tickets

theverge.com Emma Roth 2025-11-14 18:58:07

is a news writer who covers the streaming wars, consumer tech, crypto, social media, and much more. Previously, she was a writer and editor at MUO. Posts from this author will be added to your daily email digest and your homepage feed. The Federal Trade Commission is suing a ticket broker for allegedly using “illegal means” to buy up hundreds of thousands of live event tickets, including for Taylor Swift’s Eras tour. Key Investment Group, which also does business as Epic Seats, TotalTickets.co

Topics: ftc group investment key tickets

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This Anker 5K magnetic power bank is on sale for only $28

engadget.com Unknown 2025-11-15 00:15:05

The Anker 621 MagGo power bank is on sale for just $28 via Amazon, which is a discount of 30 percent. The deal applies to all five colorways, and there are some snazzy options to choose from. This particular model didn't make our list of the best power banks, but plenty of other Anker products did. The 621 MagGo is equipped with magnets that attach to the back of certain iPhone models, which makes it easy to charge up the handset while still using it. The 5,000 mAh device can juice up the lates

Topics: 621 anker just maggo magnetic

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Elastic rejects claims of a zero-day RCE flaw in Defend EDR

bleepingcomputer.com Unknown 2025-11-15 00:41:26

Enterprise search and security company Elastic is rejecting reports of a zero-day vulnerability impacting its Defend endpoint detection and response (EDR) product. The company's statement follows a blog post from a company called AshES Cybersecurity claiming to have discovered a remote code execution (RCE) flaw in Elastic Defend that would allow an attacker to bypass EDR protections. Elastic’s Security Engineering team "conducted a thorough investigation" but could not find "evidence supportin

Topics: ashes company cybersecurity edr elastic

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The Chromatic Game Boy is getting Tetris’ best multiplayer mode

theverge.com Andrew Liszewski 2025-11-15 00:00:00

is a senior reporter who’s been covering and reviewing the latest gadgets and tech since 2006, but has loved all things electronic since he was a kid. Posts from this author will be added to your daily email digest and your homepage feed. ModRetro is bringing a new multiplayer mode to the modernized version of Tetris that has been shipping with its recreated Game Boy, the Chromatic, since its 2024 release. The game already features multiple head-to-head modes when two Chromatic handhelds are c

Topics: chromatic game mode new tetris

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We could make Rosie the Robot, but should we?

theverge.com Jennifer Pattison Tuohy 2025-11-15 15:00:00

is a senior reviewer focused on smart home and connected tech, with over twenty years of experience. She has written previously for Wirecutter, Wired, Dwell, BBC, and US News. Posts from this author will be added to your daily email digest and your homepage feed. Robots are coming, but are we ready for them? All the big consumer tech companies are working on robotic companions for our homes. There’s Amazon’s Astro, Samsung’s Ballie, LG’s AI Agent, and whatever it is that Apple is dreaming up i

Topics: email grant home robotics smart

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The Mysterious Origins of the Most Energetic Neutrino Ever Detected

wired.com Jorge Garay 2025-11-16 06:00:00

In February 2023, a cosmic particle detector housed deep in the Mediterranean Sea recorded the arrival of a neutrino with approximately 20 to 30 times more energy than any other neutrino documented previously. Labelled KM3-230213A, the particle had a calculated energy of 220 petaelectronvolts (PeV), far greater than the 10 PeV of the previously most energetic neutrino. The finding generated a lot of excitement among physicists, but raised also many questions. Neutrinos are the most abundant par

Topics: cosmic energetic energy neutrino neutrinos

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An Aurora Is Hitting Monday Night Only and Will Be Visible in Over a Dozen States

cnet.com See Full Bio 2025-11-16 14:45:12

As the sun continues the tumultuous peak of its 11-year cycle, more instances of aurora borealis have been expected. The most recent instance was earlier in August when auroras lit up the skies in 18 states. It seems the Earth is in for another battering of solar material as another aurora has been forecast for Monday night, and it should be a pretty decent one for states in the northern US. According to NOAA, the Earth will experience a geomagnetic storm with a Kp 5 rating. For the uninitiated

Topics: aurora geomagnetic noaa states storm

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Hundreds of Robots Competed in the World's First Robot Olympics. The Results Were Unintentionally Hilarious

futurism.com Unknown 2025-11-17 04:23:36

In the past few decades, China has rapidly transitioned from one of the poorest nations on Earth to the global kingpin in robotics production. Between 2022 and 2023, the People's Republic installed over 276,000 robots throughout various industries, more than every other country on Earth combined. The machines are descending on Beijing this week, flocking from all corners of the world to take part in kickboxing, track, football, table tennis, and dance competitions in what's being called the wor

Topics: 000 beijing china robotics robots

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This Bright Dot May Be an Entirely New Type of Space Object

gizmodo.com Gayoung Lee 2025-11-17 15:15:23

At first, the dot looked like any other star. Then the astrophysicists switched to polarized light and found themselves looking at an entirely unexpected sight. “Everything else disappeared, even the bright central black hole, and only this little dot remained,” Elena Shablovinskaia, an astrophysicist at Universidad Diego Portales in Chile and the Max Planck Institute for Radio Astronomy in Germany, told Gizmodo. Shablovinskaia’s team believes they’ve discovered an entirely new kind of space ob

Topics: hole light magnetic punctum shablovinskaia

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How Hurricane Erin Made History Without Even Making Landfall

gizmodo.com Ellyn Lapointe 2025-11-17 20:55:17

The Atlantic’s first hurricane of 2025 wasted no time making history. Hurricane Erin will be remembered as one of the fastest-strengthening Atlantic hurricanes on record, with perhaps the fastest intensification rate for any storm earlier than September 1, CNN reports. At 11 a.m. ET on Friday, August 15, Erin was a Category 1 hurricane, according to the National Hurricane Center. Over the next 24 hours, this storm strengthened significantly. By 11 a.m. ET on Saturday, the NHC declared Erin a “c

Topics: atlantic erin hurricane intensification storm

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The Biggest Winners of China’s World Humanoid Robot Games

gizmodo.com Bruce Gil 2025-11-18 00:35:46

China just hosted the first-ever World Humanoid Robot Games—basically the Olympics, but for robots. The three-day event kicked off Thursday, August 14, inside Beijing’s 12,000-seat National Speed Skating Oval, a venue originally built for the 2022 Winter Olympics. Over 200 teams from 16 countries including Japan, Brazil, Germany, and the U.S., competed across 26 competitions. The contests ranged from classic track-and-field events and gymnastics to kickboxing, soccer, medicine sorting, and even

Topics: humanoid including meter robot robotics

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A gigantic jet caught on camera: A spritacular moment for NASA astronaut

news.ycombinator.com Unknown 2025-11-15 09:11:48

Left: Gigantic Jet Event from the International Space Station, taken by NASA Astronaut Nichole Ayers. (Credit: Ayers) Right: Sprite event appearing over a lightning strike, seen from space. This photo was taken by astronauts aboard the International Space Station during Expedition 44. Credit: NASA astronauts on board Expedition 44 Did you see that gorgeous photo NASA astronaut Nichole Ayers took on July 3, 2025? Originally thought to be a sprite, Ayers confirmed catching an even rarer form of a

Topics: ayers electrical gigantic jet space

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Major Plastics Treaty Ends in Failure

gizmodo.com Joseph Winters 2025-11-18 17:56:33

This story was originally published by Grist. Sign up for Grist’s weekly newsletter here. Diplomats from around the world concluded nine days of talks in Geneva — plus a marathon overnight session that lasted into the early hours of Friday — with no agreement on a global plastics treaty. During a closing plenary that started on Friday at 6:30 a.m. — more than 15 hours after it was originally scheduled to begin — nearly all countries opposed an updated draft of the United Nations treaty that wa

Topics: countries negotiations plastics said treaty

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Rapidly intensifying Hurricane Erin becomes historic storm due to strengthening

arstechnica.com Unknown 2025-11-18 05:50:31

After several days of working its way across the open and at times hostile Atlantic Ocean this week, Hurricane Erin found more favorable conditions and exploded in intensity on Friday night. Shortly before noon on Saturday, the National Hurricane Center declared that Erin had reached Category 5 status, the most powerful kind of hurricane. This determination is based on sustained winds, which were measured by a US Air Force Hurricane Hunter aircraft on Saturday at 160 mph. There is some good ne

Topics: atlantic erin hurricane pressure track

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Dicing an Onion, the Mathematically Optimal Way

news.ycombinator.com The Pudding 2025-11-18 06:54:19

This is a project about onions and math. Why? Because tens of millions of people are curious about how to properly dice an onion, according to YouTube. In 2021, chef and food writer J. Kenji López-Alt broke out some math to get optimal uniform piece sizes. But there is more than one way to dice an onion… This is an onion. (Well, a simplified cross-section of one.) We’ve cut it in half lengthwise, using a sharp knife to reduce the chance of injury and onion-induced crying. From here, what’s the

Topics: cuts depth onion radial vertical

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Generative AI Gave MIT Scientists a New Tool to Fight Antibiotic-Resistant Bacteria

cnet.com See Full Bio 2025-11-18 06:15:43

Antibiotic-resistant bacteria are dangerous because they already "know" what most antibiotics look like. Scientists at MIT have found a way to create something new: using generative AI to design two antibiotic compounds from scratch that can kill drug-resistant gonorrhea and MRSA in lab dishes and mice. Antibiotic resistance is one of the world's biggest public health threats yet new antibiotics have been scarce for decades. Traditional drug discovery methods rely on screening known chemical li

Topics: ai antibiotic chemical drug mit

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UN Plastics Treaty Talks Once Again End in Failure

wired.com Joseph Winters 2025-11-18 05:52:00

This story originally appeared on Grist and is part of the Climate Desk collaboration. Diplomats from around the world concluded nine days of talks in Geneva—plus a marathon overnight session that lasted into the early hours of Friday—with no agreement on a global plastics treaty. During a closing plenary that started on Friday at 6:30 am, more than 15 hours after it was originally scheduled to begin, nearly all countries opposed an updated draft of the United Nations treaty that was put forwa

Topics: countries delegates geneva plastics treaty

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Once Again, Oil States Thwart Agreement on Plastics

news.ycombinator.com Stephen Robert Miller 2025-11-18 05:39:32

Diplomats from around the world concluded nine days of talks in Geneva — plus a marathon overnight session that lasted into the early hours of Friday — with no agreement on a global plastics treaty. During a closing plenary that started on Friday at 6:30 a.m. — more than 15 hours after it was originally scheduled to begin — nearly all countries opposed an updated draft of the U.N. treaty that was put forward by the negotiating committee chair, the Ecuadorian diplomat Luis Vayas Valdivieso. Many

Topics: countries plastic plastics said treaty

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A treaty to end plastic pollution is still out of reach — that’s not necessarily a bad thing

theverge.com Justine Calma 2025-11-19 06:12:29

is a senior science reporter covering energy and the environment with more than a decade of experience. She is also the host of Hell or High Water: When Disaster Hits Home , a podcast from Vox Media and Audible Originals. The nations of the world have been on the precipice of reaching a global agreement to curb plastic pollution for a few years now. Delegates from 184 governments met in Geneva this month to try to hammer out a final treaty, but in the end, they walked away without a deal. This

Topics: plastic production recycling treaty year

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Galaxy Watch Classic fan discovers bezel trick that looks like magic

androidauthority.com Unknown 2025-11-20 04:56:08

Kaitlyn Cimino / Android Authority TL;DR A Reddit clip shows the Galaxy Watch 6 Classic’s bezel still works when held above the screen, thanks to magnetic sensing. The bezel uses a Hall sensor to detect changes in a magnetic field, rather than a mechanical connection. The same system is used on the latest Galaxy Watch 8 Classic. The rotating bezel is one of the Galaxy Watch Classic’s signature features, but it turns out that it doesn’t actually need to touch the smartwatch to work. It’s one

Topics: bezel classic galaxy magnetic watch

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Galileo's Telescopes: Seeing Is Believing

news.ycombinator.com Unknown 2025-11-17 14:03:34

To continue reading this article you need to purchase a subscription, available from only £5. Start my trial subscription now If you have already purchased access, or are a print & archive subscriber, please ensure you are logged in. Please email [email protected] if you have any problems.

Topics: access archive article com subscription

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Time to End Roundtripping by Big Pharma

news.ycombinator.com Brad W. Setser 2025-11-21 05:08:42

Sometimes a news story makes your case for you. That happened this past week, when the Wall Street Journal published a remarkable story on surging U.S. imports of peptides and protein-based hormones from Ireland. Chelsey Dulaney and Jared Hopkins wrote: “Planes have been jetting from Ireland to the U.S. this year carrying something more valuable than gold: $36 billion worth of hormones for popular obesity and diabetes drugs … The peptide- and protein-based hormones feed into a category of drug

Topics: billion companies pharmaceutical tax trade

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Show HN: Modelence – Supabase for MongoDB

news.ycombinator.com Unknown 2025-11-22 06:13:29

Getting Started Modelence is an all-in-one TypeScript framework for startups shipping production apps, with the mission to eliminate all boilerplate for standard features that modern web applications need, like authentication, database setup, cron jobs, AI observability, email and more.

Topics: ai applications apps authentication boilerplate

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Google Find Hub’s automatic enrollments will only give you two days to opt out (APK teardown)

androidauthority.com Unknown 2025-11-22 14:51:19

Andy Walker / Android Authority TL;DR Google plans to expand Find Hub’s automatic enrollment with more triggers. We’ve now spotted clues suggesting that once users hit these triggers, they would have two days to opt out of participating in the Find Hub network. Additional triggers expected in the future include enabling Location access on the device, syncing with Fast Pair accessories, and more. Google recently rebranded Android’s Find My Device tool into Find Hub when it added the ability t

Topics: automatic device google hub network

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Atlantic’s First Major Hurricane May Be Just Hours Away

gizmodo.com Ellyn Lapointe 2025-11-22 18:45:44

Tropical Storm Erin is on track to reach the Caribbean this weekend, with current forecasts predicting it will curve north of the Leeward Islands and Puerto Rico without making landfall. Still, Caribbean nations are bracing for severe storm impacts as Erin moves into warmer waters, increasing the risk of rapid intensification. A National Hurricane Center update issued at 5 a.m. AST Thursday, August 14, stated that Erin should gradually strengthen over the next day or so. After that, the storm w

Topics: atlantic erin hurricane islands storm

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Mbodi AI (YC X25) Is Hiring a Founding Research Engineer (Robotics)

news.ycombinator.com Unknown 2025-11-23 14:00:53

Description: Join Mbodi AI (YC X25), an AI robotics startup founded by two former Googlers committed to pushing the boundaries of intelligent robots. Mbodi is an embodied AI platform that makes robots learn like humans, with natural language. So anyone can teach robots new skills by talking to them and execute the learned skills reliably in production, in minutes. We are pioneering the next wave of robotics, where advanced generative models meet real-world applications. Backed by top investors

Topics: ai founding ml models robotics

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What Medieval People Got Right About Learning (2019)

news.ycombinator.com Scott Young 2025-11-23 23:29:46

We tend to assume that if people today and people five hundred years ago do things differently, it’s because we’ve figured out a better way to do it. After all, we have microscopes, democracy and penicillin. People in the middle ages lit cats on fire for fun. Yet despite overwhelming progress, it’s ironically in the area of education that we may be the ones who have it backward. Apprenticeships were, for a long time, the dominant way of learning professional skills. A master agrees to show you

Topics: apprenticeships knowledge learn learning theory

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Elon Musk's DOGE Was Far More of a Dismal Failure Than We Thought

futurism.com Unknown 2025-11-24 08:50:33

Elon Musk's Department of Government Efficiency originally promised to save the government $2 trillion in waste. That target quickly dropped to $1 trillion. Then in April, Musk started intimating that the savings would only be in the region of $150 billion, making it clear to all but his most diehard supporters that DOGE was failing on its own terms — even going by its own dubious estimates of its progress. Now, it's looking like those purported "savings" are somehow even more pitiful than onc

Topics: cancelling doge federal politico savings

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Latest Tech News

Why Semantic Layers Matter (and how to build one with DuckDB)

A Super-Energetic Neutrino That Reached Earth in 2023 Has Been Confirmed to Be Real. But Where Did It Come From?

Ticket reseller sued for illegally buying over 2,000 Taylor Swift tickets

This Anker 5K magnetic power bank is on sale for only $28

Elastic rejects claims of a zero-day RCE flaw in Defend EDR

The Chromatic Game Boy is getting Tetris’ best multiplayer mode

We could make Rosie the Robot, but should we?

The Mysterious Origins of the Most Energetic Neutrino Ever Detected

An Aurora Is Hitting Monday Night Only and Will Be Visible in Over a Dozen States

Hundreds of Robots Competed in the World's First Robot Olympics. The Results Were Unintentionally Hilarious

This Bright Dot May Be an Entirely New Type of Space Object

How Hurricane Erin Made History Without Even Making Landfall

The Biggest Winners of China’s World Humanoid Robot Games

A gigantic jet caught on camera: A spritacular moment for NASA astronaut

Major Plastics Treaty Ends in Failure

Rapidly intensifying Hurricane Erin becomes historic storm due to strengthening

Dicing an Onion, the Mathematically Optimal Way

Generative AI Gave MIT Scientists a New Tool to Fight Antibiotic-Resistant Bacteria

UN Plastics Treaty Talks Once Again End in Failure

Once Again, Oil States Thwart Agreement on Plastics

A treaty to end plastic pollution is still out of reach — that’s not necessarily a bad thing

Galaxy Watch Classic fan discovers bezel trick that looks like magic

Galileo's Telescopes: Seeing Is Believing

Time to End Roundtripping by Big Pharma

Show HN: Modelence – Supabase for MongoDB

Google Find Hub’s automatic enrollments will only give you two days to opt out (APK teardown)

Atlantic’s First Major Hurricane May Be Just Hours Away

Mbodi AI (YC X25) Is Hiring a Founding Research Engineer (Robotics)

What Medieval People Got Right About Learning (2019)

Elon Musk's DOGE Was Far More of a Dismal Failure Than We Thought

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