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Ultrasound toothbrush promises painless checks for hidden gum problems

news.ycombinator.com American Chemical Society 2026-02-19 09:20:52

This article has been reviewed according to Science X's editorial process and policies . Editors have highlighted the following attributes while ensuring the content's credibility: The toothbrush-shaped ultrasound transducer (left image) features a small head size (right image), allowing easy access to premolars and molars in the back of the mouth. Credit: Adapted from ACS Sensors 2025, DOI: 10.1021/acssensors.5c00521 When visiting the dentist, you might remember being poked and prodded by a t

Topics: gum teeth toothbrush transducer ultrasound

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Jane Austen's Boldest Novel Is Also Her Least Understood

news.ycombinator.com Lauren Groff 2026-02-20 18:54:29

Another aunt, a parsimonious busybody, married a Reverend Norris, and Fanny’s own mother rather too hastily married one Price, a lieutenant of marines, who has become an out-of-work heavy drinker by the time we meet him. To her great misfortune, soon after her marriage, Mrs. Price has nine children in 11 years, with not nearly enough money to support them, and in desperation she agitates for a rapprochement among the sisters, and the rich Bertram family at last deigns to help. Thus, the oldest P

Topics: aunt family fanny henry price

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LetsEncrypt – Expiration Notification Service Has Ended

news.ycombinator.com Unknown 2026-02-23 10:49:39

Since its inception, Let’s Encrypt has been sending expiration notification emails to subscribers that have provided an email address to us via the ACME API. This service ended on June 4, 2025. The decision to end the service is the result of the following factors: Over the past 10 years more and more of our subscribers have been able to put reliable automation into place for certificate renewal. Providing expiration notification emails means that we have to retain millions of email addresses c

Topics: email encrypt expiration let service

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Melania Trump's Audiobook Is Narrated by an AI Copy of Herself

futurism.com Unknown 2026-02-23 02:45:26

Let's get one thing straight: it's hard to be married to the president. From coming up with epoch-defining slogans like "Be Best" to decking the White House halls with bizarre Christmas decor, it's a tougher gig than most of us can imagine. Our current first lady, Melania Trump, is well aware of the challenge after her previous four-year stint in the White House. Notoriously private — or perhaps just too busy to make public appearances — the first lady's life has been shrouded in mystery. Howe

Topics: ai audiobook lady melania voice

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Playdate Season 2 review: Tiny Turnip and Chance's Lucky Escape

engadget.com Unknown 2026-02-23 02:45:52

It's hard to believe that Playdate Season Two is almost over already, but here we are in week five with just one more drop of new games left to go after this. In the latest batch, we got the climbing metroidvania, Tiny Turnip, and Chance's Lucky Escape, a short point-and-click adventure that leans into the absurd. In line with the rest of this season's games, which have consistently been really solid, they're both pretty damn fun. Tiny Turnip Luke Sanderson Tiny Turnip is one of the standouts

Topics: chance game just lucky turnip

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Android 16 will protect users from fake cell towers and potential spying threats

engadget.com Unknown 2026-02-23 03:23:37

It turns out that your smartphone could be an overlooked vulnerability that puts you at risk of being tracked. To combat this, Google is rolling out a new security feature in Android 16 that will warn users if their device is using a fake or insecure mobile network or if that network requests identifying information about a connected device. However, these features likely won't be available until the next generation of Android devices, as first reported by Android Authority. Since the current A

Topics: android connected device devices network

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Cell Towers Can Double as Cheap Radar Systems for Ports and Harbors (2014)

news.ycombinator.com Ian Chant 2026-02-23 08:48:12

How do you see ships without a pricey radar system? The question has troubled seaports around the world as they work to improve security. Without radar installations, it can be hard for port employees to detect small ships like those employed by pirates or by the terrorists who attacked the USS Cole in 2000. A team of researchers in Germany can now offer security teams a new option, though: putting existing cellular towers to work as quick and dirty radar systems. Developed at the Fraunhofer In

Topics: cell objects pcl radar signals

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Reverse Engineering the Microchip CLB

news.ycombinator.com Reverse Engineering The Microchip Clb 2026-02-23 08:30:02

Microchip added a very cool peripheral called the Configurable Logic Block (CLB) to there new PIC16F13145 microcontroller family. It’s essentially a small FPGA (32 LUTs) that can connect to the internals of the chip. However, they don’t document how to configure it yourself, only referring you to their online configurator tool that submits jobs to an API that places and routes to LUTs. The [CLB] Interface does not appear as an SFR in the Register Map and is not directly user-accessible; it is

Topics: accessible clb luts microchip pic16f13145

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IPv6 reaches majority use in 21 countries as Starlink and other providers modernize global connectivity

techspot.com Skye Jacobs 2026-02-23 04:52:00

What just happened? The number of countries where more than half of internet connections use the IPv6 protocol has surged from 13 to 21 over the past year. This rapid progress, tracked by measurements from organizations such as Akamai, APNIC, Facebook, and Google, highlights both evolution and the growing influence of new connectivity providers, most notably Starlink. The most dramatic transformation has occurred in Tuvalu, a Pacific island nation with a population under 10,000. Until early 202

Topics: address internet ipv6 percent starlink

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Chinese Police Cracking Down on Naughty Fiction

futurism.com Unknown 2026-02-23 05:30:23

Imagine you pen an erotic short story that involves two handsome men falling in love and into bed — some of your best work yet — and you publish it on a website that caters to that type of subgenre. But instead of getting kudos and gushing comments from readers, the cops haul you up to the police station for some dramatic questioning in a barren room, a process that may eventually land you in prison. That's exactly what's been happening to erotica writers in China who have run afoul of law enf

Topics: cops danmei economist police writers

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Amazon Prime Day 2025: The best early deals to shop now, dates and everything else you need to know

engadget.com Unknown 2026-02-23 06:01:27

Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . Prime Day is coming back (again) this year; here's what we know so far, plus early deals. Amazon Prime Day has been a summer mainstay for years at this point and this year is no exception. Prime Day will return on July 8 to July 11 this year, marking the first time the shopping event

Topics: amazon best day percent prime

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Let’s Encrypt ends certificate expiry emails to cut costs, boost privacy

bleepingcomputer.com Unknown 2026-02-22 00:09:19

Let's Encrypt has announced it will no longer notify users about imminent certificate expirations via email due to high costs, privacy concerns, and unnecessary complexities. The decision to end the expiration notification email service was implemented as of June 4, 2025, but Let's Encrypt has now communicated it via a blog post to raise awareness and prevent unexpected disruptions. Let's Encrypt is a nonprofit Certificate Authority (CA) that provides free, automated, and open digital certific

Topics: certificate email encrypt let service

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Bluetooth flaws could let hackers spy through your microphone

bleepingcomputer.com Unknown 2026-02-23 08:03:19

Vulnerabilities affecting a Bluetooth chipset present in more than two dozen audio devices from ten vendors can be exploited for eavesdropping or stealing sensitive information. Researchers confirmed that 29 devices from Beyerdynamic, Bose, Sony, Marshall, Jabra, JBL, Jlab, EarisMax, MoerLabs, and Teufel are affected. The list of impacted products includes speakers, earbuds, headphones, and wireless microphones. The security problems could be leveraged to take over a vulnerable product and on

Topics: bluetooth device ernw phone researchers

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Show HN: Octelium – FOSS Alternative to Teleport, Cloudflare, Tailscale, Ngrok

news.ycombinator.com Unknown 2026-02-23 02:24:17

Octelium Table of Contents What is Octelium? Octelium is a free and open source, self-hosted, unified platform for zero trust resource access that is primarily meant to be a modern alternative to remote access VPNs and similar tools. It is built to be generic enough to not only operate as a zero-config remote access VPN (i.e. alternative to OpenVPN Access Server, Twingate, Tailscale, etc...), a ZTNA platform (i.e. alternative to Cloudflare Access, Teleport, Google BeyondCorp, etc...), a sca

Topics: access aware based cluster octelium

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Notorious Fungus Blamed for ‘Mummy’s Curse’ Is Now a Promising Cancer Treatment

gizmodo.com Margherita Bassi 2026-02-23 03:00:30

In the 1920s, a number of workers on the excavation team that uncovered King Tutankhamun’s tomb met untimely deaths. Five decades later, 10 out of 12 scientists died after entering the tomb of the 15th-century Polish King Casimir IV. In both cases, researchers suggested that fungal spores could have played a role in the mysterious deaths, specifically identifying the fungus Aspergillus flavus within the Polish burial. A. flavus is now making a comeback, but not as a reawakened killer from ancie

Topics: asperigimycins cancer cells researchers ripps

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Amazon Is Going Nuts, Mac Mini Rival (Windows 11 Pro, 1TB SSD, 32GB RAM) Now Costs Peanuts

gizmodo.com Unknown 2026-02-23 03:10:22

Amazon has begun Prime Day early this year and the best news is that these deals are accessible to everyone (not just Prime members). One of the best deals currently on sale is on the GMKtec mini PC (i7, 1TB SSD, 32GB DDR4 RAM, Windows 11 Pro) which is a diminutive desktop with XL performance and a price that’s hard to believe. If you’re looking for a powerful desktop computer but don’t want to spend $2,000 on a high-end model, this is a smart pick. Now, the GMKtec mini PC featuring Intel Core

Topics: 1tb intel mini pc price

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CEOs Are Quietly Telling Us the Truth: AI Is Replacing You

gizmodo.com Luc Olinga 2026-02-23 06:52:36

The fear is real. In meetings, Slack chats, and after-work drinks, one question is quietly eating away at millions of employees: Will AI take my job? In public, CEOs like to sound reassuring. They say generative AI will “enhance productivity” or “streamline operations.” But when you actually read what they’re telling their own employees, or what slips out in investor memos, the message is chilling: virtual workers are here, and they’re not just assistants. They’re replacements. Let’s take a cl

Topics: ai ceo company tech work

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Best Internet Providers in Indiana

cnet.com See Full Bio 2026-02-22 18:10:00

What's the best internet provider in Indiana? AT&T is CNET's pick of the best internet service provider in Indiana.The provider's fast speeds, free equipment, unlimited data and high customer satisfaction ratings make it our top recommendation. If you want a reliable internet experience with good value and support, you can't go wrong with AT&T. If you're outside the coverage area of AT&T, we recommend Frontier Fiber. It offers high speeds, one of the highest in the state, reaching up to 5,000Mb

Topics: fiber indiana internet service speeds

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10 Best Dash Kitchen Appliances (2025), Tested and Reviewed

wired.com Matthew Korfhage 2026-02-23 04:04:00

Dash is the mini-me of the kitchen world, best known for its impossibly low-cost Mini Waffle Maker ($13) and wee egg cookers. The best Dash kitchen appliances are ingenious about packing surprising functionality into a tiny package—saving both counter space and cash in your bank account. This has, of course, made Dash a viral fixture on TikTok, with scads of recipes for mini-waffles and keto-friendly chaffles. Former WIRED reviewer Brenda Stolyar found Dash to be a godsend for tiny New York apa

Topics: appliances best dash kitchen mini

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With ‘F1’, Apple finally has a theatrical hit

techcrunch.com Anthony Ha 2026-02-23 08:35:37

Looks like Apple has its first bona fide box office hit. The company has already produced critically-acclaimed and award-winning films for Apple TV+. In fact, while Netflix has reportedly spent millions on its Oscar campaigns, Apple’s “Coda” remains the only movie produced by a streaming service to win the Academy Award for Best Picture. It has, however, been a different story at the box office — at best, returns have fallen short of ambitious budgets, and with “Argylle,” the company had a spe

Topics: apple box f1 movie office

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Your Slack app is getting a big upgrade - here's how to try the new AI features

zdnet.com Jack Wallen 2026-02-23 03:15:12

Elyse Betters Picaro / ZDNET Slack users will see new features appear on the app and service, no matter which plan you use. Some of the more exciting features will be added to paid plans only, but it doesn't matter which paid plan you choose, because there are some exciting new additions coming. Also: 6 Slack tips I swear by to turn a chaotic workspace into a well-oiled machine Let's start with what's coming to the free plan first. What's new to the free plan? The big addition to the free p

Topics: ai new plan salesforce slack

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These XR glasses gave me a 200-inch OLED screen to work with - and they're priced well

zdnet.com Matthew Miller 2026-02-23 03:30:15

ZDNET's key takeaways The RayNeo Air 3S is available for $269 These XR glasses provide advanced micro-OLED screens, dual speaker chamber design, and a 201-inch screen visual experience There are no light-blocking shades or electrochromic dimming capability, and productivity support is limited to native MacOS and Windows support. View now at Best Buy View now at Amazon more buying choices Just about every person to whom I demonstrate XR glasses ends up buying a pair for airline travel, commuti

Topics: 3s air experience glasses rayneo

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Shenzhou-20 astronauts complete second spacewalk to enhance Tiangong station

news.ycombinator.com Andrew Jones 2026-02-23 06:48:13

HELSINKI — Two Chinese astronauts conducted an extravehicular activity outside the Tiangong space station Thursday, marking their second spacewalk in five weeks. Astronaut Chen Zhongrui opened the Wentian module hatch at 3:04 a.m. Eastern (0704 UTC) June 26, beginning activities, ascending to the tip of Tiangong’s robotic arm. Mission commander Chen Dong, wearing a Feitian EVA suit with blue stripes, joined his colleague two hours later. Wang Jie, formerly an engineer with the China Aerospace S

Topics: chen china space station tiangong

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Sequence and first differences together list all positive numbers exactly once

news.ycombinator.com Unknown 2026-02-18 09:59:12

EXAMPLE Sequence reads 1 3 7 12 18 26 35 45..., differences are 2 4 5, 6, 8, 9, 10 ... and the point is that every number not in the sequence itself appears among the differences. This property (together with the fact that both the sequence and the sequence of first differences are increasing) defines the sequence!

Topics: 10 18 35 differences sequence

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If You Own an iPhone, Amazon Is Offering a Free AirTag Just Before Prime Day

gizmodo.com Gizmodo Deals 2026-02-23 04:28:41

Apple doesn’t often discount products, and AirTags have never been on sale from the Apple website or in Apple stores. Amazon, however, occasionally surprises us with exclusive pricing on these useful Bluetooth trackers. For the best value, a pack of AirTags is nearly always a better buy than a single one. Amazon is also running a great deal just in time for Prime Day: purchase three AirTags and receive a fourth free. That drops the price of four AirTags to just $74, down from the regular $99 ($

Topics: airtag airtags amazon apple device

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iPhone 17 Pro may reposition the Apple logo once again, says leaker

9to5mac.com Michael Burkhardt 2026-02-22 17:29:54

According to Apple leaker Majin Bu, Apple will once again be repositioning the Apple logo on the next iPhone. Apple last repositioned the Apple logo with the iPhone 11 lineup, and it’s remained centered on the iPhone ever since. Six years later, that may be changing once again – if this rumor holds up. Majin Bu has a spotty track record with Apple rumors, though they have shared a number of accurate tidbits in the past, including the ‘Desert Titanium’ marketing name for the new iPhone 16 Pro co

Topics: apple centered iphone logo new

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Gradient Descent Visualiser

news.ycombinator.com Unknown 2026-02-18 23:10:49

👋 Hey there! Let's play with gradient descent. This mini-app acts as an interactive supplement to Teach LA's curriculum on linear regression and gradient descent. Not sure what's going on? Check out the lesson notebook and the corresponding slides.

Topics: acts app corresponding descent gradient

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Brother printer hack puts thousands of users at risk of remote takeover

techspot.com Daniel Sims 2026-02-22 22:01:00

TL;DR: Hackers have cracked Brother's method of generating default admin passwords for hundreds of its printers, scanners, and label makers, putting users who haven't changed them at risk. Additionally, researchers found seven other serious vulnerabilities affecting Brother and other brands. Users should visit company websites for security advisories and update their firmware. Security researchers at Rapid7 recently reported eight vulnerabilities affecting over 689 printers, scanners, and label

Topics: brother devices passwords printers users

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Android 16 will alert users to possible Stingray surveillance, fake cell towers

techspot.com Skye Jacobs 2026-02-22 23:37:00

Why it matters: As Android 16's new security features roll out with the next generation of smartphones, users will, for the first time, have a tool to detect invisible digital surveillance. Whether this prompts broader reforms in how such technology is used and regulated remains to be seen. Still, the feature reflects a growing awareness of the need to protect personal privacy in the mobile age. An upcoming Android update will introduce a warning system to help users detect one of the most elus

Topics: android device devices mobile users

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James Webb Discovers First-Ever Exoplanet by Taking a Picture of It

futurism.com Unknown 2026-02-22 21:45:33

Okay, that's pretty cool. World's First Scientists harnessing NASA's James Webb Space Telescope took what appears to be the first-ever direct picture of an exoplanet resulting in its discovery, in yet another accomplishment for the mighty space observatory. An international team of astronomers published a paper on the historic finding in the prestigious journal Nature. "If confirmed, this would represent Webb’s first direct image discovery of a planet," they wrote of the finding, "and the li

Topics: james planet space star webb

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Latest Tech News

Ultrasound toothbrush promises painless checks for hidden gum problems

Jane Austen's Boldest Novel Is Also Her Least Understood

LetsEncrypt – Expiration Notification Service Has Ended

Melania Trump's Audiobook Is Narrated by an AI Copy of Herself

Playdate Season 2 review: Tiny Turnip and Chance's Lucky Escape

Android 16 will protect users from fake cell towers and potential spying threats

Cell Towers Can Double as Cheap Radar Systems for Ports and Harbors (2014)

Reverse Engineering the Microchip CLB

IPv6 reaches majority use in 21 countries as Starlink and other providers modernize global connectivity

Chinese Police Cracking Down on Naughty Fiction

Amazon Prime Day 2025: The best early deals to shop now, dates and everything else you need to know

Let’s Encrypt ends certificate expiry emails to cut costs, boost privacy

Bluetooth flaws could let hackers spy through your microphone

Show HN: Octelium – FOSS Alternative to Teleport, Cloudflare, Tailscale, Ngrok

Notorious Fungus Blamed for ‘Mummy’s Curse’ Is Now a Promising Cancer Treatment

Amazon Is Going Nuts, Mac Mini Rival (Windows 11 Pro, 1TB SSD, 32GB RAM) Now Costs Peanuts

CEOs Are Quietly Telling Us the Truth: AI Is Replacing You

Best Internet Providers in Indiana

10 Best Dash Kitchen Appliances (2025), Tested and Reviewed

With ‘F1’, Apple finally has a theatrical hit

Your Slack app is getting a big upgrade - here's how to try the new AI features

These XR glasses gave me a 200-inch OLED screen to work with - and they're priced well

Shenzhou-20 astronauts complete second spacewalk to enhance Tiangong station

Sequence and first differences together list all positive numbers exactly once

If You Own an iPhone, Amazon Is Offering a Free AirTag Just Before Prime Day

iPhone 17 Pro may reposition the Apple logo once again, says leaker

Gradient Descent Visualiser

Brother printer hack puts thousands of users at risk of remote takeover

Android 16 will alert users to possible Stingray surveillance, fake cell towers

James Webb Discovers First-Ever Exoplanet by Taking a Picture of It

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