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A New Geometry for Einstein's Theory of Relativity

news.ycombinator.com Steve Nadis 2026-01-08 14:19:17

Kunzinger and Sämann wanted to use their new way of estimating curvature to determine whether these singularity theorems would still be valid if they no longer assumed space-time is smooth. Would singularities persist even in rougher, more realistic-looking spaces? It’s important to find out if the smoothness condition can be waived, Sämann said, because doing so would bring the theorems closer to physical reality. After all, he added, “we believe non-smoothness is an inescapable part of the nat

Topics: curvature singularity space sämann time

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Samsung fixes the Secure Folder flaw that let anyone see what apps you’re hiding

androidauthority.com Unknown 2026-01-15 23:30:35

Mishaal Rahman / Android Authority TL;DR Samsung has patched a Secure Folder flaw that previously allowed anyone with physical access to see your hidden apps and photos. The vulnerability existed because Secure Folder was implemented as a “work profile,” which key system components didn’t recognize as a highly secure space. One UI 8 reclassifies Secure Folder as a “private” profile, ensuring system apps now correctly hide its sensitive files and app information from view. Samsung’s Secure Fo

Topics: folder private profile samsung secure

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China’s Geely is officially bringing its luxury EV startup Zeekr private

techcrunch.com Rebecca Bellan 2026-01-18 03:32:10

China’s Geely Auto is officially taking its luxury EV subsidiary Zeekr private, just over a year after the company debuted on the New York Stock Exchange. The news comes two months after Geely offered to take Zeekr private, following President Donald Trump’s threats earlier this year to delist Chinese stocks from U.S. exchanges. When the merger closes, Zeekr shareholders will receive either $2.69 in cash per share or 1.23 newly issued Geely shares for each Zeekr share they own, per a regulator

Topics: cash geely private shares zeekr

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What happens when a brand built for sport loses some of its focus?

news.ycombinator.com Carter B. 2026-01-20 12:37:56

I’m Carter, I lead growth and operations at Handstand [a bit more on me here]. I grew up just outside of Portland, Oregon - naturally, Nike has been in my orbit and part of my life since day one (see below: “Dear Santa, please bring me a pair of Chicago 1s”). It’s an inspiring brand we discuss and think about often, so I decided to write about it. Excited to continue sharing more perspectives from different voices on the team. Visiting Santa at Meier & Frank - Portland, OR “When you see only p

Topics: athlete clarity innovation nike sport

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A United Nations research institute created an AI refugee avatar

techcrunch.com Anthony Ha 2026-01-21 04:03:39

In Brief A research institute connected to the United Nations has created two AI-powered avatars designed to teach people about refugee issues. 404 Media wrote about an experiment conducted by a class at the United Nations University Center for Policy Research that resulted in the creation of two AI agents or avatars — Amina, a fictional woman who fled Sudan and is living in a refugee camp in Chad, and Abdalla, a fictional soldier with the Rapid Support Forces, a paramilitary force in Sudan.

Topics: 404 abdalla ai amina avatars

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ChatGPT hallucinated about music app Soundslice so often, the founder made the lie come true

techcrunch.com Julie Bort 2026-01-28 03:20:14

Earlier this month, Adrian Holovaty, founder of music-teaching platform Soundslice, solved a mystery that had been plaguing him for weeks. Weird images of what were clearly ChatGPT sessions kept being uploaded to the site. Once he solved it, he realized that ChatGPT had become one of his company’s greatest hype men – but it was also lying to people about what his app could do. Holovaty is best known as one of the creators of the open-source Django project, a popular Python web development fram

Topics: chatgpt feature holovaty images music

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A Fast-Rising Gaming YouTuber Is an AI Construct, Not a Human

futurism.com Unknown 2026-01-30 06:44:49

With 2.57 million subscribers and more than 800 million views, a YouTuber named Bloo is swiftly becoming one of the biggest gaming personalities in the biz. But unlike his human peers, this blue-haired vlogger is a cartoonish AI-powered avatar — perhaps the clearest sign yet of AI's deep and industry-shaking inroads into the world of entertainment and influencers. In an interview with CNBC, Bloo's creator, Dutch YouTuber and AI enthusiast Jordi van den Bussche, said that he decided to unleash

Topics: ai avatar bloo den van

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Building an innovation ecosystem for the next century

technologyreview.com Mit Technology Review Insights 2026-01-31 12:00:00

Megan: And last year, when Michigan's Governor Whitmer announced this new initiative and your position, she noted the need to foster this sort of culture of innovation. And we hear that a lot that terminal in the context of company cultures. It's interesting to hear in the context of a U.S. state's economy. I wonder what your strategy is for building out this ecosystem, and how do you foster a state's innovation culture? Ben: Yeah, it's an awesome point, and I think I mentioned earlier that I c

Topics: innovation lot really state think

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See the First Breathtaking Celestial Images From the Vera C. Rubin Observatory

cnet.com See Full Bio 2026-02-08 02:17:04

A sneak preview of the first batch of deep space imagery from the new Vera C. Rubin Observatory in Chile made its way to news sites and social media last week, followed by a livestream event. "(The Rubin Observatory is) going to build the greatest time-lapse movie of the cosmos ever made," the observatory said in a post. The observatory is named for the American scientist widely credited for finding some of the first evidence of dark matter, with the project being funded by the National Scienc

Topics: dark galaxies million observatory rubin

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OpenAI disavows online broker Robinhood's sale of 'OpenAI tokens'

engadget.com Unknown 2026-02-08 22:00:33

'We did not partner with Robinhood, were not involved in this and do not endorse it.' OpenAI has condemned online brokerage firm Robinhood's sale of "OpenAI tokens," saying they will not give consumers stock in the company. "We did not partner with Robinhood, were not involved in this, and do not endorse it," the company said in a post on X, adding that the tokens are not equity and that it did not give approval for any transfer. The statement addresses a recent move by Robinhood to provide Eu

Topics: investors openai private robinhood tokens

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OpenAI condemns Robinhood’s ‘OpenAI tokens’

techcrunch.com Maxwell Zeff 2026-02-09 12:43:27

OpenAI wants to make clear that Robinhood’s sale of “OpenAI tokens” will not give everyday consumers equity — or stock — in OpenAI, the company said in a post from its official newsroom account on X. OpenAI says it does not endorse Robinhood’s effort, nor was it involved in facilitating the token sale. “These ‘OpenAI tokens’ are not OpenAI equity,” said OpenAI’s newsroom account. “We did not partner with Robinhood, were not involved in this, and do not endorse it. Any transfer of OpenAI equity

Topics: equity openai private robinhood shares

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Affluent Travelers Are Ditching Business Class for Business Jets

wired.com Hannah Towey 2026-02-11 03:00:00

We’re cruising 35,000 feet over the French Riviera, the plane’s wing cutting through billows of white. Below us, the sea is sparkling, and I spot a cluster of yachts anchored along the coastline. A ray of light hits my glass of Champagne and turns it to liquid gold. I take another sip. So this is what it feels like to be on cloud nine. I’m flying from London to St. Tropez with the private aviation company Wheels Up, and for the first time in my life, I don’t want a flight to end. Once you’ve go

Topics: aviation business commercial private travelers

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Kristen Craft brings fresh fundraising strategy to the Foundation Stage at TechCrunch All Stage

techcrunch.com Techcrunch Events 2026-02-16 22:00:00

Raising in 2025 doesn’t look anything like it did in 2021 — and that’s exactly the point. At TechCrunch All Stage on July 15 at Boston’s SoWa Power Station, Kristen Craft, Head of Business Development at Fidelity Private Shares, will lead a roundtable session titled “It’s Not 2021 Anymore. Navigating the 2025 VC Landscape,” happening on the Foundation Stage. In this conversation, Craft will guide founders through the new norms of venture capital. From shifting investor expectations to sharper

Topics: craft founders private session stage

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Community Is Motivation on Tap

news.ycombinator.com Unknown 2026-02-12 16:13:43

Community is Motivation on Tap A good community can have tremendous influence on one’s motivation. I never appreciated this fact enough so I wanted to write about it here. Looking at successful athletes, founders, musicians, game speedrunners, or overachievers in any area, they seem to have unlimited motivation to do loads of tedious work or practice. One might say they are interested in the work itself, but how inherently interesting can beating super mario 1ms faster be? The work of a founde

Topics: community game information motivated motivation

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How to turn on Android's Private DNS mode - and why turning it off is a big mistake

zdnet.com Jack Wallen 2026-02-18 17:10:00

Jack Wallen / Elyse Betters Picaro / ZDNET Nearly everything you do on your desktop, laptop, phone, and tablet begins with a Domain Name System (DNS) query. Essentially, DNS turns domain names (such as ZDNET.com) into an IP address so web browsers and apps know where to get the information you want. Also: The best Android phones to buy in 2025 Without DNS, you'd have to type 34.149.132.124 every time you wanted to go to ZDNET.com or 74.125.21.102 to go to Google.com. Even by simply running a

Topics: android app cloudflare dns private

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Space Elevators Could Totally Work—if Earth Days Were Much Shorter

wired.com Rhett Allain 2026-02-19 00:00:00

Suppose you could speed up Earth’s rotation so that a day was only half as long? What would happen? Well, for starters we’d have to make new clocks that only have hours 1 to 6 for am and pm. If you had tickets to an 8 o’clock concert, you’d be out of luck: 8 o’clock no longer exists. But maybe a more germane question is, why do physicists ask nutty questions like this? It’s never going to happen—just move on, right? Well, here’s the deal. Thinking about counterfactual scenarios gives us insight

Topics: day earth elevator hours time

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Space Elevators Could Totally Work—If Earth Days Were Much Shorter

wired.com Rhett Allain 2026-02-19 12:00:00

Suppose you could speed up Earth’s rotation so that a day was only half as long? What would happen? Well, for starters we’d have to make new clocks that only have hours 1 to 6 for am and pm. If you had tickets to an 8 o’clock concert, you’d be out of luck: 8 o’clock no longer exists. But maybe a more germane question is, why do physicists ask nutty questions like this? It’s never going to happen—just move on, right? Well, here’s the deal. Thinking about counterfactual scenarios gives us insight

Topics: day earth elevator hours time

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The 8 Best Drones (2025): Flight-Tested and Reviewed

wired.com Sam Kieldsen 2026-02-19 12:30:00

By beaming an ultra-low latency live feed from its camera directly into a pair of goggles, a first-person view (FPV) drone puts you right in the cockpit of a small and agile aircraft able to squeak through the smallest of gaps and pull off breath-taking moves like flips, barrel rolls, loops and vertical plunges. These aren’t drones you buy to get pristine photos of wide open vistas so much as to experience (and document) an adrenaline-inducing rollercoaster ride through a tight, obstacle-populat

Topics: avata controller drone drones like

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RFK Jr.’s CDC panel ditches some flu shots based on anti-vaccine junk data

arstechnica.com Unknown 2026-02-20 17:47:29

The vaccine panel hand-selected by health secretary and anti-vaccine advocate Robert F. Kennedy Jr. on Thursday voted overwhelmingly to drop federal recommendations for seasonal flu shots that contain the ethyl-mercury containing preservative thimerosal. The panel did so after hearing a misleading and cherry-picked presentation from an anti-vaccine activist. There is extensive data from the last quarter century proving that the antiseptic preservative is safe, with no harms identified beyond sl

Topics: data preservative thimerosal vaccine vaccines

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Earths largest camera:3B pixel images

news.ycombinator.com Jonathan Corum 2026-02-18 20:53:59

Earth’s Largest Camera Takes 3 Billion-Pixel Images of the Night Sky At the heart of the new Vera C. Rubin Observatory in Chile is the world’s largest digital camera. About the size of a small car, it will create an unparalleled map of the night sky. The observatory’s first public images of the sky are expected to be released on June 23. Here’s how its camera works. Sensor 3 inches RAFT Dead segment Noisy segment Damaged sensor Relative size of the moon A series of slides highlighting details

Topics: camera data image observatory rubin

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WhatsApp rolls out Meta AI-powered message summaries in the U.S.

9to5mac.com Marcus Mendes 2026-02-24 03:52:11

A couple of weeks ago, WABetaInfo spotted signs that Meta was gearing up to bring AI-generated summaries for WhatsApp messages. Today, the feature is officially live for users in the U.S. Here’s how to use it. Summarization is perhaps one of the most useful applications of generative AI, especially when it comes to quickly catching up on transactional information. Which is why, provided it’s well-implemented, using AI to condense notifications and group chats can genuinely save time. Which is

Topics: ai messages private summaries whatsapp

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Blockchain-driven platform to mimic stock trading, allowing users to buy shares of SpaceX, other hot private companies

cnbc.com Tanaya Macheel 2026-02-24 22:33:26

Republic, a New York-based investment startup, is offering users exposure to SpaceX by issuing a "tokenized" representation of its shares. The company will begin selling the digital tokens this week and eventually plans to expand the offering to other private companies like artificial intelligence darlings OpenAI and Anthropic, as well as Stripe, X, Waymo, Epic Games and more. The Wall Street Journal first reported the story Wednesday. "We're talking about delivering products to retail investo

Topics: crypto investors private republic retail

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Mid-sized cities outperform major metros at turning economic growth into patents

news.ycombinator.com Dave Deek 2026-02-25 16:26:19

New research provides ammunition for spreading federal R&D dollars beyond Silicon Valley. Economists Federica Coelli (EBRD) and Paul Pelzl (NHH Norwegian School of Economics) studied 2.5 million patents across 759 U.S. communities over 40+ years. Their finding: smaller urban areas innovate effectively when economies improve. Current reality: Just 5% of U.S. communities produce 75% of all patents. Share By the numbers: The boom effect: 8.3% increase in overall patents when oil/gas employment

Topics: boom booms innovation oil patents

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‘Sandbox first’: Andrew Ng’s blueprint for accelerating enterprise AI innovation

venturebeat.com Emilia David 2026-02-26 06:38:49

Join the event trusted by enterprise leaders for nearly two decades. VB Transform brings together the people building real enterprise AI strategy. Learn more Enterprises may be concerned about the impact of AI applications when put into production, but hampering these projects with guardrails at the onset could slow innovation. Andrew Ng, founder of DeepLearning AI and one of the most prominent figures in AI development, emphasized the importance of observability and guardrails in AI developme

Topics: ai enterprises innovation ng said

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Samsung offers $1,000 off preorder deal for new Galaxy foldable phones ahead of Unpacked

zdnet.com Kerry Wan 2026-02-27 03:07:00

Kerry Wan/ZDNET At this point in time, three things are certain when July comes along: backyard barbecues, fireworks past midnight, and Samsung Unpacked. Also: The best Samsung phones to buy in 2025 Just yesterday, Samsung confirmed that the next Unpacked event will take place on Wednesday, July 9, in Brooklyn, New York. This follows the host cities of Paris, France, and Seoul, South Korea, over the past two years, with the company suggesting that it's chosen Brooklyn for its "bold ideas, cre

Topics: event galaxy reservation samsung unpacked

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Tuesday Telescope: A new champion enters the ring

arstechnica.com Unknown 2026-02-27 15:00:09

Welcome to the Tuesday Telescope. There is a little too much darkness in this world and not enough light—a little too much pseudoscience and not enough science. We’ll let other publications offer you a daily horoscope. At Ars Technica, we’ll take a different route, finding inspiration from very real images of a universe that is filled with stars and wonder. After a decade of construction a large new reflecting telescope publicly released its first images on Monday, and they are nothing short of

Topics: observatory rubin science telescope vera

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The Vera C. Rubin Observatory shares first images from planned decade-long survey of the sky

engadget.com Unknown 2026-03-01 12:25:57

The National Science Foundation just shared the first images captured by the Vera C. Rubin Observatory, a sample of the footage it'll capture as part of a planned decade-long survey that's starting later in 2025. The project, dubbed the "Legacy Survey of Time and Space" is predicted to lead to the discovery of "millions of new asteroids within the first two years" the survey is running. In just a 10 hour period, the National Science Foundation says that the Rubin Observatory "discovered 2,104 n

Topics: foundation observatory rubin science survey

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See the Mind-Blowing First Images From a Revolutionary New Telescope

gizmodo.com Ellyn Lapointe 2026-03-01 17:28:47

It’s been more than two decades since the Vera C. Rubin Observatory was first conceived in a “back-of-the-napkin” sketch. With construction on this huge telescope finally nearing completion, Rubin scientists unveiled its dazzling first images at a livestreamed event in Washington D.C. on Monday, June 23. Perched atop a mountain in the Chilean Andes, the Rubin Observatory boasts the largest digital camera ever built. The telescope, overseen by the U.S. National Science Foundation (NSF) and the D

Topics: data images observatory rubin scientists

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How to turn on Android's Private DNS mode - and why it's an absolute must for security

zdnet.com Jack Wallen 2026-03-02 03:08:00

Jack Wallen / Elyse Betters Picaro / ZDNET Nearly everything you do on your desktop, laptop, phone, and tablet begins with a Domain Name System (DNS) query. Essentially, DNS turns domain names (such as ZDNET.com) into an IP address so web browsers and apps know where to get the information you want. Also: How to enable earthquake alerts on your Android phone (including these Samsung models) Without DNS, you'd have to type 34.149.132.124 every time you wanted to go to ZDNET.com or 74.125.21.10

Topics: android app cloudflare dns private

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First incredible images from Vera Rubin observatory's car-sized camera reveal distant galaxies and asteroids

techspot.com Rob Thubron 2026-03-02 11:16:00

What just happened? The first incredible images taken by the car-sized camera at the Vera C. Rubin Observatory have been released. The pictures show distant galaxies and dust clouds thousands of light years away from Earth, all captured in breathtaking detail across just over 10 hours of test observations. The Legacy Survey of Space and Time (LSST) camera at the $810 million 18-storey Vera C. Rubin observatory in Chile, named after the US astronomer who discovered evidence of dark matter in 197

Topics: light observatory rubin sky years

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Latest Tech News

A New Geometry for Einstein's Theory of Relativity

Samsung fixes the Secure Folder flaw that let anyone see what apps you’re hiding

China’s Geely is officially bringing its luxury EV startup Zeekr private

What happens when a brand built for sport loses some of its focus?

A United Nations research institute created an AI refugee avatar

ChatGPT hallucinated about music app Soundslice so often, the founder made the lie come true

A Fast-Rising Gaming YouTuber Is an AI Construct, Not a Human

Building an innovation ecosystem for the next century

See the First Breathtaking Celestial Images From the Vera C. Rubin Observatory

OpenAI disavows online broker Robinhood's sale of 'OpenAI tokens'

OpenAI condemns Robinhood’s ‘OpenAI tokens’

Affluent Travelers Are Ditching Business Class for Business Jets

Kristen Craft brings fresh fundraising strategy to the Foundation Stage at TechCrunch All Stage

Community Is Motivation on Tap

How to turn on Android's Private DNS mode - and why turning it off is a big mistake

Space Elevators Could Totally Work—if Earth Days Were Much Shorter

Space Elevators Could Totally Work—If Earth Days Were Much Shorter

The 8 Best Drones (2025): Flight-Tested and Reviewed

RFK Jr.’s CDC panel ditches some flu shots based on anti-vaccine junk data

Earths largest camera:3B pixel images

WhatsApp rolls out Meta AI-powered message summaries in the U.S.

Blockchain-driven platform to mimic stock trading, allowing users to buy shares of SpaceX, other hot private companies

Mid-sized cities outperform major metros at turning economic growth into patents

‘Sandbox first’: Andrew Ng’s blueprint for accelerating enterprise AI innovation

Samsung offers $1,000 off preorder deal for new Galaxy foldable phones ahead of Unpacked

Tuesday Telescope: A new champion enters the ring

The Vera C. Rubin Observatory shares first images from planned decade-long survey of the sky

See the Mind-Blowing First Images From a Revolutionary New Telescope

How to turn on Android's Private DNS mode - and why it's an absolute must for security

First incredible images from Vera Rubin observatory's car-sized camera reveal distant galaxies and asteroids

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