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Tiny flyers levitate on the Sun's heat alone

news.ycombinator.com Tollefson 2025-11-18 10:11:57

Devices (artist’s illustration) kept aloft by sunlight could take sensors into an understudied layer of the atmosphere.Credit: Schafer et al. Nature (2025) Theory and mathematics said his device would fly. But Ben Schafer was still pleasantly surprised the first time he flipped a switch and watched the centimetre-square device his team had built levitate, if only for a moment before flipping over. It was a proof of concept for a design that has been published today in Nature1. One day, it migh

Topics: device gas layer schafer sunlight

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Everything I know about good system design

news.ycombinator.com Unknown 2025-11-21 05:38:46

I see a lot of bad system design advice. One classic is the LinkedIn-optimized “bet you never heard of queues” style of post, presumably aimed at people who are new to the industry. Another is the Twitter-optimized “you’re a terrible engineer if you ever store booleans in a database” clever trick. Even good system design advice can be kind of bad. I love Designing Data-Intensive Applications, but I don’t think it’s particularly useful for most system design problems engineers will run into. Wha

Topics: data database design need service

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Thai Air Force seals deal for Swedish Gripen jets

news.ycombinator.com Agence France-Presse 2025-11-20 23:11:42

Advertisement The US$600 million agreement for the Saab JAS 39 Gripens was first announced in June as part of a long-term plan to modernise the air force’s combat capabilities. During five days of clashes with Cambodia that left more than 40 people dead, Thailand used its fleet of F-16s to strike military targets across the border. It was the deadliest border fighting between the two countries in decades. The purchase of four Swedish-built Gripen jets is part of a long-term plan to modernise

Topics: air border force gripen thailand

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F-16s lose out as Thai Air Force seals deal for Swedish Gripen jets

news.ycombinator.com Agence France-Presse 2025-11-21 11:11:42

Advertisement The US$600 million agreement for the Saab JAS 39 Gripens was first announced in June as part of a long-term plan to modernise the air force’s combat capabilities. During five days of clashes with Cambodia that left more than 40 people dead, Thailand used its fleet of F-16s to strike military targets across the border. It was the deadliest border fighting between the two countries in decades. The purchase of four Swedish-built Gripen jets is part of a long-term plan to modernise

Topics: air border force gripen thailand

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OpenAI in talks to sell around $6 billion in stock at roughly $500 billion valuation

cnbc.com Ashley Capoot 2025-11-21 17:57:35

Sam Altman, CEO of OpenAI attends the annual Allen and Co. Sun Valley Media and Technology Conference at the Sun Valley Resort in Sun Valley, Idaho, U.S., on July 8, 2025. OpenAI is preparing to sell around $6 billion in stock as part of a secondary sale that would value the company at roughly $500 billion, CNBC confirmed Friday. The shares would be sold by current and former employees to investors including SoftBank, Dragoneer Investment Group and Thrive Capital, according to a person familia

Topics: announced billion capital cnbc openai

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Deal: Save a whopping $800 on the Ampace Andes 1500 Power Station

androidauthority.com Unknown 2025-11-21 23:05:16

Edgar Cervantes / Android Authority The Ampace Andes 1500 Portable Power Station has become my go-to battery solution for most of my needs. Mainly because it is both portable and powerful enough to run all my electronics. Needless to say, I would recommend it, especially at today’s heavily discounted price. You can get it at a massive $800 discount, bringing the price down to a very amicable $599. Buy the Ampace Andes 1500 Portable Power Station for just $599 ($800 off) This offer is available

Topics: ampace charge electronics portable power

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US F-16s lose out as Thai Air Force seals US$600M deal for Swedish Gripen jets

news.ycombinator.com Agence France-Presse 2025-11-21 23:11:42

Advertisement The US$600 million agreement for the Saab JAS 39 Gripens was first announced in June as part of a long-term plan to modernise the air force’s combat capabilities. During five days of clashes with Cambodia that left more than 40 people dead, Thailand used its fleet of F-16s to strike military targets across the border. It was the deadliest border fighting between the two countries in decades. The purchase of four Swedish-built Gripen jets is part of a long-term plan to modernise

Topics: air border force gripen thailand

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A mind–reading brain implant that comes with password protection

news.ycombinator.com Conroy 2025-11-20 22:32:21

A brain scan (artificially coloured) produced by magnetic resonance imaging. Credit: K H Fung/Science Photo Library A brain implant can decode a person’s internal chatter — but the device works only if the user thinks of a preset password1. The mind-reading device, or brain–computer interface (BCI), accurately deciphered up to 74% of imagined sentences. The system began decoding users’ internal speech — the silent dialogue in people’s minds — only when they thought of a specific keyword. This

Topics: brain internal kunz sentences speech

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Applied Materials sinks 14% on weak guidance due to China demand

cnbc.com Samantha Subin 2025-11-22 04:01:10

Applied Materials shares plunged14% after the semiconductor equipment maker issued weak guidance as it faces demand pressures in China. The company forecast adjusted earnings per share of $2.11, falling short of the $2.39 per share expected by LSEG. The company projected $6.7 billion in revenue, versus the $7.34 billion estimate. During an earnings call with analysts, CEO Gary Dickerson said that the current macroeconomic backdrop and trade issues have fueled "increasing uncertainty and lower

Topics: billion china company earnings guidance

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Melting Glacier in Alaska Floods State Capital

futurism.com Unknown 2025-11-22 02:48:03

This is climate change in action. Glacier Gush Parts of Alaska's state capital, Juneau, were flooded this week, caused by a nearby melting glacier, according to The Guardian. And, yes, in case you're wondering, climate change appears to be the main culprit behind the record-breaking water levels. The Mendenhall Glacier, a vast field of ice and snow that sits north of the city in a valley, has created a natural lake that is dammed by ice, according to the news outlet. On Tuesday, local offici

Topics: change city climate glacier ice

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dbrand’s Joy-Con grip nightmare is coming to an end as it starts shipping replacements

androidauthority.com Unknown 2025-11-22 04:16:50

Oliver Cragg / Android Authority TL;DR Accessory maker dbrand has officially started shipping its Joy-Lock Grips. The replacement grips are designed so that Joy-Cons won’t detach from the Switch 2, even when 87% of the console’s weight is put on the magnetic hinge. The replacement kit also includes a set of Dock Adapter Friction Pads. Accessory maker dbrand is well-known for its high-quality products. However, the company recently found itself embroiled in controversy shortly after releasing

Topics: dbrand grips joy lock replacement

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SpaceX reveals why the last two Starships failed as another launch draws near

arstechnica.com Unknown 2025-11-22 04:20:24

SpaceX is continuing with final preparations for the 10th full-scale test flight of the company's enormous Starship rocket after receiving launch approval Friday from the Federal Aviation Administration. Engineers completed a final test of Starship's propulsion system with a so-called "spin prime" test Wednesday at the launch site in South Texas. Ground crews then rolled the ship back to a nearby hangar for engine inspections, touchups to its heat shield, and a handful of other chores to ready

Topics: launch rocket spacex starship test

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Applied Materials sinks nearly 14% on weak guidance due to China demand

cnbc.com Samantha Subin 2025-11-22 09:27:12

Applied Materials shares plunged14% after the semiconductor equipment maker issued weak guidance as it faces demand pressures in China. The company forecast adjusted earnings per share of $2.11, falling short of the $2.39 per share expected by LSEG. The company projected $6.7 billion in revenue, versus the $7.34 billion estimate. During an earnings call with analysts, CEO Gary Dickerson said that the current macroeconomic backdrop and trade issues have fueled "increasing uncertainty and lower

Topics: billion china company earnings guidance

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The electric fence stopped working years ago

news.ycombinator.com Unknown 2025-11-22 04:34:43

We were walking to watch the sunset when a dog started barking at us from a porch. From inside, a voice called out: "Don't worry, he won't leave the porch. The electric fence hasn't worked in years, but he still won't go past it." I stopped mid-step. A dog, imprisoned by a fence that only exists in his memory. The next question changed how I see everything: What electric fences do we have in our lives? The Invisible Barrier Electric fences train dogs through graduated discomfort, first a wa

Topics: electric fence fences memory seconds

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The Folk Economics of Housing

news.ycombinator.com Elmendorf 2025-11-22 05:10:41

Abstract Why is housing supply so severely restricted in US cities and suburbs? Urban economists offer two primary hypotheses: homeowner self-interest and political fragmentation. Homeowners, who outnumber and have organizational advantages over renters, are said to lobby against development to protect their property values. The fragmentation hypothesis emphasizes that development's negative externalities are borne locally while most of the benefits accrue regionally or nationally, leading local

Topics: believe housing large prices supply

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SpaceX Has Likely Skirted Federal Income Taxes for Decades, Investigation Reveals

gizmodo.com Ellyn Lapointe 2025-11-22 09:25:29

Since its founding in 2002, Elon Musk’s SpaceX has emerged as the leading force in commercial spaceflight and a key launch provider for the U.S. government. A recent investigation suggests its dominance may stem—at least in part—from two decades of federal tax avoidance. Internal company documents reviewed exclusively by The New York Times show that SpaceX can exploit net operating loss (NOL) carryforwards, a U.S. tax provision that lets companies use past losses to offset future taxable income

Topics: billion federal musk spacex tax

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Best Travel Headphones for 2025

cnet.com See Full Bio 2025-11-22 08:23:00

Bose QuietComfort Ultra Earbuds: Bose has released its improved QC Ultra Earbuds (2nd gen), which means you'll be able to find discounts on the original QC Ultra Earbuds. They feature excellent sound and previously best-in-class noise-canceling performance. Jabra Elite 8 Active Gen 2: Jabra billed these earbuds, which have unfortunately been discontinued, as the "world's toughest earbuds," and based on our tests (they survived several drops without a scratch), that may very well be true. While

Topics: beats buds canceling noise pro

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Trump Admin Has Dropped a Third of All Investigations Into Big Tech, Advocates Say

gizmodo.com Lucas Ropek 2025-11-22 14:15:41

Trump talked a big game during the election about taking the fight to Silicon Valley. But, since taking office, the former reality star seems to have done little to make good on that promise. In fact, a recent survey of his actions claims that Trump, whose political victory was partially propelled by gargantuan gobs of cash from tech firms and their executives, has dropped a third of all investigations and enforcement actions against tech companies since taking power. The report, published by t

Topics: actions companies enforcement report trump

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Trump wants to clean up the space industry’s red tape: Here’s who wins

techcrunch.com Aria Alamalhodaei 2025-11-22 14:09:09

During a press conference in late 2024, President Donald Trump vowed to “slash massive numbers of job-killing regulations” in his second term and pledged to eliminate 10 old rules for every new one. Now, he’s bringing that deregulation drive to commercial space, ordering federal agencies to streamline launch licensing, fast-track spaceport development, and clear out the Federal Aviation Administration’s industry advisory board. “Inefficient permitting processes discourage investment and innova

Topics: disrupt environmental new order space

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YouTube Music just got a new podcast superpower that’s been a long time coming

androidauthority.com Unknown 2025-11-22 18:21:15

TL;DR Google Podcasts used to offer the ability to remove gaps of silence from podcasts. When Podcasts was retired, YouTube Music did not offer a similar tool. Work on a “trim silence” option for YouTube Music was spotted last year, and the feature is finally available now. Progress is supposed to mean improvement, right? While we’re no strangers to seeing Google transform one app into another, merging features in the process, it’s extremely frustrating when we lose some functionality along t

Topics: google music podcasts silence youtube

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Are We Creating Entrepreneurs or Just Privileged Risk-Takers?

news.ycombinator.com Magic Sketch 2025-11-22 18:20:08

We've all seen them — those impossibly young entrepreneurs gracing magazine covers, giving TED talks, and securing million-dollar funding rounds before they can legally drink. Mark Zuckerberg dropping out of Harvard, Evan Spiegel turning down billions for Snapchat, or countless other "wunderkind" stories that dominate our feeds. But here's the question nobody wants to ask: What role did their parents really play? A recent discussion on V2EX, China's equivalent of Hacker News, pulled back the c

Topics: entrepreneurs just money success young

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Trump admin ranks companies on loyalty while handing out favors to Big Tech

arstechnica.com Unknown 2025-11-22 18:12:24

The Trump administration has ended potential enforcement actions against dozens of tech firms and 165 corporations overall, delivering on promises to end the alleged "weaponization" of the federal government, a report by nonprofit consumer advocacy group Public Citizen said. "In six months, the Trump administration has already withdrawn or halted enforcement actions against 165 corporations of all types—and one in four of the corporations benefiting from halted or dropped enforcement is from th

Topics: actions corporations enforcement halted trump

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Anker’s 3-in-1 Qi2 charging station has returned to its Prime Day low

theverge.com Brandon Russell 2025-11-22 18:30:00

If you’ve ever juggled a phone, a smartwatch, and a pair of wireless earbuds, you know the struggle of keeping them all charged. Rather than go through the process of charging them one by one, a quality charging station can help you manage the chaos and reduce cable clutter. The Anker MagGo Wireless Charging Station is a solid option for keeping your devices charged, and it’s currently matching its all-time low of $62.99 ($27 off) at Amazon and Anker’s online storefront — the same price drop we

Topics: 99 charging features percent time

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The Timmy Trap

news.ycombinator.com Unknown 2025-11-22 21:10:45

This is Part 2 of my LLM series. In Part 1, I discussed how in just a few short years, we went from the childlike joy of creating “Pirate Poetry” to the despair that our jobs would disappear. My main message was to relax a bit, as companies abuse the hype cycle to distort what is actually happening. In this post I want to talk about how we fall prey to this distortion: we perceive LLMs as intelligent when they aren’t. A recent post from Jeppe Stricker put me on this path. He wrote, “AI produces

Topics: human intelligence just llms shortening

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Best Microwaves of 2025, Tested and Reviewed

cnet.com See Full Bio 2025-11-22 21:00:00

CNET staff -- not advertisers, partners or business interests -- determine how we review products and services. If you buy through our links, we may earn a commission. In every kitchen, there are a handful of staples that make cooking, prepping and everything in between easier. For some, that may be a toaster oven, for others perhaps it's a blender or juicer. However, for me, there's one that stands out the most: the microwave. Whether you're simply reheating leftovers or prepping popcorn for a

Topics: best black microwave microwaves price

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The Peanuts Gang Is Back With Apple TV Plus Summer Musical

cnet.com See Full Bio 2025-11-22 22:57:00

Back Services & Software All the news and tips you need to get the most out of services, apps and software you use every day.

Topics: apps day news services software

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Applied Materials sinks 13% on weak guidance due to China demand

cnbc.com Samantha Subin 2025-11-23 04:07:03

Applied Materials shares plunged more than 13% after the semiconductor equipment maker issued weak guidance as it faces demand pressures in China. The company forecasted adjusted earnings of $2.11 per this quarter, falling short of the $2.39 per share expected by LSEG. The company projected $6.7 billion in revenue, versus the $7.34 billion estimate. During an earnings call with analysts, CEO Gary Dickerson said that the current macroeconomic backdrop and trade issues have fueled "increasing un

Topics: billion china company earnings guidance

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Google Pixel 9 Pro Fold drops to new record-low price!

androidauthority.com Unknown 2025-11-22 08:46:34

C. Scott Brown / Android Authority Foldable phones are fascinating, and I love how they have transformed smartphone interaction in recent years. What I don’t love is how expensive they usually are, though. That said, good deals come from time to time, and today we have one of the best offers we’ve seen in a while. The Google Pixel 9 Pro Fold is $600 off, bringing the cost down to a record-low price of $1,199. Buy the Google Pixel 9 Pro Fold for just $1,199 ($600 off) This offer is available di

Topics: fold google pixel price pro

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Aqua Voice shows just how good Mac dictation could be if Apple really tried

9to5mac.com Ben Lovejoy 2025-11-23 02:46:46

I’m a big fan of dictation and voice commands. The latter are the most common way for me to control my smart home, and I dictate a lot of my messages and other short pieces of text. Apple’s built-in dictation features have certainly improved over the years, but trying out the third-party app Aqua Voice shows just how much better it could be if Apple really tried. Indeed, I actually wrote the entirety of this piece using Aqua Voice dictation … Perhaps it’s the fact that I work from home, or jus

Topics: aqua dictation use ve voice

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Deals 24GB M4 MacBook Pro $300 off, M4 Max Mac Studio $300 off, MacBook Air, iPad Air, more

9to5mac.com Justin Kahn 2025-11-23 04:46:10

Today’s 9to5Toys Lunch Break deals is headlined by our giant lineup of weekend Apple deals. We are once again heading into the weekend with all-time low pricing on the M3 iPad Air lineup alongside deals on M4 MacBook Air, iPad mini 7, AirPods 4, and a whole lot more all rounded up for you right here. On top of that we have also spotted a rare discount on the most affordable 24GB M4 MacBook Pro you can buy at $300 off alongside even deeper deals on M4 Max Mac Studio models at $300 off. Everything

Topics: amazon m4 macbook price right

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Latest Tech News

Tiny flyers levitate on the Sun's heat alone

Everything I know about good system design

Thai Air Force seals deal for Swedish Gripen jets

F-16s lose out as Thai Air Force seals deal for Swedish Gripen jets

OpenAI in talks to sell around $6 billion in stock at roughly $500 billion valuation

Deal: Save a whopping $800 on the Ampace Andes 1500 Power Station

US F-16s lose out as Thai Air Force seals US$600M deal for Swedish Gripen jets

A mind–reading brain implant that comes with password protection

Applied Materials sinks 14% on weak guidance due to China demand

Melting Glacier in Alaska Floods State Capital

dbrand’s Joy-Con grip nightmare is coming to an end as it starts shipping replacements

SpaceX reveals why the last two Starships failed as another launch draws near

Applied Materials sinks nearly 14% on weak guidance due to China demand

The electric fence stopped working years ago

The Folk Economics of Housing

SpaceX Has Likely Skirted Federal Income Taxes for Decades, Investigation Reveals

Best Travel Headphones for 2025

Trump Admin Has Dropped a Third of All Investigations Into Big Tech, Advocates Say

Trump wants to clean up the space industry’s red tape: Here’s who wins

YouTube Music just got a new podcast superpower that’s been a long time coming

Are We Creating Entrepreneurs or Just Privileged Risk-Takers?

Trump admin ranks companies on loyalty while handing out favors to Big Tech

Anker’s 3-in-1 Qi2 charging station has returned to its Prime Day low

The Timmy Trap

Best Microwaves of 2025, Tested and Reviewed

The Peanuts Gang Is Back With Apple TV Plus Summer Musical

Applied Materials sinks 13% on weak guidance due to China demand

Google Pixel 9 Pro Fold drops to new record-low price!

Aqua Voice shows just how good Mac dictation could be if Apple really tried

Deals 24GB M4 MacBook Pro $300 off, M4 Max Mac Studio $300 off, MacBook Air, iPad Air, more

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