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The Best Whitening Toothpaste of 2025, According to Dentists

cnet.com See Full Bio 2025-11-24 05:26:00

Why we like it: Colgate Optic White Pro Series toothpaste is one whitening toothpaste that Dr. Fatima Khan, a dentist in Houston, Texas, recommends. Some of her reasons for recommending it include its trusted brand name and its 5% hydrogen peroxide whitening agent. Unlike other whitening agents that work by removing stains on the surface of the tooth, hydrogen peroxide can get inside the tooth so it whitens intrinsically as well as extrinsically. Sachar also recommends this toothpaste, saying,

Topics: hydrogen peroxide toothpaste use whitening

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Designing Software in the Large

news.ycombinator.com David Foster 2025-11-26 08:25:58

Designing Software in the Large Software75 Jul 22, 2025 – Filed as: A Philosophy of Software Design is my favorite book I’ve read to date about designing large long-lived maintainable software programs. Here’s what I learned: Complexity Complexity is anything related to the structure of a software system that makes it hard to understand & modify the system. Symptoms of complexity: Change Amplification - A seemingly simple change requires code modifications in many different places. High Cog

Topics: code complexity modules obscurity software

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Debian 13 arrives with major updates for Linux users - what's new in 'Trixie'

zdnet.com Steven Vaughan-Nichols 2025-11-26 17:17:00

Debian / Elyse Betters Picaro / ZDNET ZDNET's key takeaways The latest Debian Linux comes with multiple improvements. Debian will no longer support old 32-bit x86 architectures. Debian supports essentially all Linux desktop interfaces. Debian Linux is everywhere. Debian may only be ranked fifth on the DistroWatch list of Linux distributions, but other Linux distros, such as Mint, MX Linux, and Ubuntu, are built on its strong foundation. The latest release, Debian 13, codenamed Trixie, rele

Topics: debian latest linux support trixie

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Mexico to US livestock trade halted due to screwworm spread

news.ycombinator.com Unknown 2025-11-26 10:30:49

(Washington, D.C., July 9, 2025)- Yesterday, Mexico’s National Service of Agro-Alimentary Health, Safety, and Quality (SENASICA) reported a new case of New World Screwworm (NWS) in Ixhuatlan de Madero, Veracruz in Mexico, which is approximately 160 miles northward of the current sterile fly dispersal grid, on the eastern side of the country and 370 miles south of the U.S./Mexico border. This new northward detection comes approximately two months after northern detections were reported in Oaxaca

Topics: border mexico new nws usda

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Debian 13 "Trixie"

news.ycombinator.com Unknown 2025-11-26 15:18:45

Debian 13 trixie released August 9th, 2025 After 2 years, 1 month, and 30 days of development, the Debian project is proud to present its new stable version 13 (code name trixie ). trixie will be supported for the next 5 years thanks to the combined work of the Debian Security team and the Debian Long Term Support team. Debian 13 trixie ships with several desktop environments, such as: GNOME 48, KDE Plasma 6.3, LXDE 13, LXQt 2.1.0, Xfce 4.20 This release contains over 14,100 new packag

Topics: available debian packages release trixie

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I can never go back to a phone without this display feature

androidauthority.com Unknown 2025-11-26 15:00:56

Tushar Mehta / Android Authority I have never been the kind to rise and shine. For the 31 years of my existence — or, at least, for the major chunk I remember vividly, waking up early in the morning has been a woeful exercise for me, unless, of course, it is for traveling or hosting people I love. Instead, I can feel the neurons in my brain firing up better in the dead of the night, and so, I have made the effort to ensure the tech in my life is best suited to make better use of those hours. T

Topics: android feature mode reading xiaomi

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Mexico to US Livestock Trade halted due to Screwworm spread

news.ycombinator.com Unknown 2025-11-26 16:30:49

(Washington, D.C., July 9, 2025)- Yesterday, Mexico’s National Service of Agro-Alimentary Health, Safety, and Quality (SENASICA) reported a new case of New World Screwworm (NWS) in Ixhuatlan de Madero, Veracruz in Mexico, which is approximately 160 miles northward of the current sterile fly dispersal grid, on the eastern side of the country and 370 miles south of the U.S./Mexico border. This new northward detection comes approximately two months after northern detections were reported in Oaxaca

Topics: border mexico new nws usda

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Truth Social’s New AI Chatbot Is Donald Trump’s Media Diet Incarnate

wired.com Guthrie Scrimgeour 2025-11-26 21:20:48

When I ask the new Truth Social AI chatbot about navigating bias in the media ecosystem, it gives what I view as pretty reasonable advice. “Diversify your sources,” it responds. “Rely on news outlets across the political spectrum, including those from both left-leaning and right-leaning perspectives.” This is advice that the AI itself may not be taking to heart. For instance, to come to the above answer it cites five sources, four of which are Fox News articles. The fifth, inexplicably, is a 4

Topics: ai perplexity search sources truth

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‘Citizen Toxie’ Is Troma at Its Filthy, Disgusting, Overtly Offensive Best

gizmodo.com Cheryl Eddy 2025-11-27 03:00:53

Troma boss Lloyd Kaufman has been out in force talking up Macon Blair’s The Toxic Avenger, a spirited reimagining of the studio’s 1984 cult classic set to irradiate a whole new generation when it hits theaters this month. But when io9 got a chance to talk to Kaufman at the recent San Diego Comic-Con, we had to ask: after watching Blair’s film, which other film in the vast Troma archives should a newly minted fan turn to next? “The fourth Toxic Avenger movie, Citizen Toxie,” Kaufman said without

Topics: avenger citizen film toxie troma

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Truth Social's New AI Chatbot Is Donald Trump's Media Diet Incarnate

wired.com Guthrie Scrimgeour 2025-11-27 03:20:48

When I ask the new Truth Social AI chatbot about navigating bias in the media ecosystem, it gives what I view as pretty reasonable advice. “Diversify your sources,” it responds. “Rely on news outlets across the political spectrum, including those from both left-leaning and right-leaning perspectives.” This is advice that the AI itself may not be taking to heart. For instance, to come to the above answer it cites five sources, four of which are Fox News articles. The fifth, inexplicably, is a 4

Topics: ai perplexity search sources truth

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The War for the Web Has Begun

gizmodo.com Luc Olinga 2025-11-27 22:54:30

A high-stakes war has just broken out over the future of the internet. In one corner is Cloudflare, a giant of web infrastructure that acts as a gatekeeper for a huge portion of online traffic. In the other is Perplexity, a darling of the AI world, a search engine threatening to upend Google’s dominance. The accusation is explosive: Cloudflare claims Perplexity is a bad actor, a rogue bot that ignores the internet’s oldest rules to secretly scrape data from websites that have explicitly told it

Topics: ai bot cloudflare perplexity web

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What founders need to know before choosing their exit — straight from Jai Das and Roseanne Wincek — at TechCrunch Disrupt 2025

techcrunch.com Techcrunch Events 2025-11-28 17:30:00

Startups face more exit options — and more uncertainty — than ever before. That’s why we’re bringing this essential conversation to the Going Public Stage at TechCrunch Disrupt 2025, happening October 27–29 in San Francisco’s Moscone West. Whether you’re already eyeing a liquidity event or just starting to scale, this is your chance to hear what top VCs are looking for and how to set your company up for long-term success. Two of the best in the business — Roseanne Wincek of Renegade Partners an

Topics: conversation disrupt exit founder founders

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I used Perplexity to make a restaurant reservation - now I'm wondering if Google is holding us back

zdnet.com Artie Beaty 2025-11-29 15:30:17

Tang Ming Tung/Getty Images ZDNET's takeaways Perplexity's new feature lets you make a restaurant reservation straight through OpenTable. The feature uses OpenTable's system, so you don't have to trust the AI to do it for you. Instead of navigating between apps or tabs to find a restaurant and then book a table, Perplexity handles everything. Finding the perfect restaurant and making a reservation just got a whole lot easier thanks to a new feature in Perplexity. The chatbot (which ZDNET's

Topics: ai new perplexity reservation restaurant

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Exit Tax: Leave Germany before your business gets big

news.ycombinator.com Oliver Eidel 2025-11-29 05:06:50

Here’s an interesting take on Germany’s exit tax, which I have written about before: Leave Germany before your business gets big. What do I mean by that? I mean that once you’re a business owner in Germany and your business has reached a certain size, you are essentially barred from ever moving out of the country again. Crazy, right? I think it’s also pretty crazy that no one really talks about this. This is, quite literally, erecting a “Berlin Wall” around German entrepreneurs, forcing them

Topics: business exit germany profitable tax

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Doximity buys Pathway Medical for $63 million to help doctors get AI-powered answers

cnbc.com Ashley Capoot 2025-11-30 08:38:49

Doximity at the New York Stock Exchange for its initial public offering on June 24, 2021. Doximity is diving deeper into artificial intelligence, announcing on Thursday the acquisition of startup Pathway Medical for $63 million. Pathway has built an AI-powered clinical reference tool that doctors can use to ask questions about guidelines, drugs and trials. Pathway's answers are synthesized from medical literature, and Doximity said the Montreal-based startup has one of the largest structured d

Topics: doctors doximity medical pathway questions

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This Already-Approved Drug Could Stop Food Allergies’ Worst Reactions

gizmodo.com Ed Cara 2025-11-30 17:00:01

Food allergies suck. Beyond placing onerous limits on your diet, their health impacts can totally derail your life, and scientists have been scrambling for years to try and find better, more lasting treatments for these conditions’ worst effects. Now, a pair of papers published today in the journal Science unlock crucial new insights into what goes on in the body when anaphylaxis occurs and indicate how an existing medication could one day help prevent these life-threatening allergic reactions.

Topics: anaphylaxis food gut mice people

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Astronomers Discover the Earliest Black Hole Ever Confirmed

gizmodo.com Ellyn Lapointe 2025-12-01 03:06:09

An international team of astronomers has identified the earliest black hole ever confirmed, an ancient behemoth that existed just 500 million years after the Big Bang. The discovery could offer new clues to a mysterious class of ancient galaxies that confounded prevailing theories of cosmology. In a new paper published in The Astrophysical Journal Letters, the researchers describe CAPERS-LRD-z9—a distant, gas-enshrouded galaxy with a supermassive black hole at its center. It dates back some 13.

Topics: black galaxies gas hole light

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Trump's Truth Social launches AI search powered by Perplexity

engadget.com Unknown 2025-12-01 08:22:50

Truth Social, President Trump's social media platform, is beta testing an AI search feature powered by Perplexity . Truth Search AI is launching first on the web version of Truth Social, with plans to begin a public beta for the feature on iOS and Android in the near future. "We're excited to partner with Truth Social to bring powerful AI to an audience with important questions," said Dmitry Shevelenko, chief business officer at Perplexity. The controversial AI company has found itself embroile

Topics: ai company perplexity social truth

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Truth Social’s AI search is powered by Perplexity, but the platform can set limits on sources

techcrunch.com Rebecca Bellan 2025-12-01 12:18:23

AI startup Perplexity is powering a new AI-powered search engine on Truth Social, President Donald Trump’s social media platform. The search engine, dubbed Truth Search AI, is already available on the web version of Truth Social, with public Beta testing on its iOS and Android apps planned for “the near future.” Trump Media said in a press release that Perplexity’s tech provides “direct, contextually accurate answers with transparent citations” which will help Truth Social “exponentially incre

Topics: ai perplexity search social truth

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Grinding Your Teeth While Sleeping? Here's How to Stop Naturally

cnet.com See Full Bio 2025-12-02 04:48:03

If you're dealing with jaw, tooth, ear or head pain, especially in the morning, you may have sleep bruxism, which means you're grinding or clenching your teeth when you sleep. If you have a mild case, you can try to treat it and soothe your symptoms at home. If you have a more severe case or it doesn't improve, make sure you see your dentist or doctor for treatment. Why do I grind my teeth when I sleep? Before we explain how to stop grinding your teeth, let's take a step back and look at what

Topics: bruxism grinding jaw sleep teeth

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Trump Media Is Testing an AI Search Engine Powered by Perplexity

cnet.com See Full Bio 2025-12-02 08:35:09

President Donald Trump's media company, Trump Media, is beta-testing a new AI search feature, Truth Search AI, on the Truth Social platform. The Florida-based company announced the news on Wednesday in a press release. Trump Media and Technology Group is perhaps best known for its social-media program Truth Social. The company is separate from the New York-based Trump Organization. "We're proud to partner with Perplexity to launch our public Beta testing of Truth Social AI, which will make Tru

Topics: media perplexity search social truth

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I tried Perplexity's new reservation feature, and it surprised me with new dining spots to try

zdnet.com Artie Beaty 2025-12-03 22:30:25

Thomas Barwick/Getty Images ZDNET's takeaways Perplexity's new feature lets you make a restaurant reservation straight through OpenTable. The feature uses OpenTable's system, so you don't have to trust the AI to do it for you. Instead of navigating between apps or tabs to find a restaurant and then book a table, Perplexity handles everything. Finding the perfect restaurant and making a reservation just got a whole lot easier thanks to a new feature in Perplexity. The chatbot (which ZDNET's

Topics: ai new perplexity reservation restaurant

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Some thoughts on journals, refereeing, and the P vs NP problem

news.ycombinator.com Unknown 2025-12-04 05:12:08

Computational Complexity and other fun stuff in math and computer science from Lance Fortnow and Bill Gasarch

Topics: complexity computational computer fortnow fun

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Teardown confirms Galaxy Z Fold 7 is a repair nightmare, but maybe that’s the point

androidauthority.com Unknown 2025-12-05 17:28:53

TL;DR iFixit gives the Samsung Galaxy Z Fold 7 a pitiful repair score in its latest teardown. Fragile inner components, glued batteries, and a hard-to-replace screen make DIY fixes tough. It could be that the same design choices may help the phone survive extreme durability tests. The Samsung Galaxy Z Fold 7 impressed last week in JerryRigEverything’s notorious bend test, which is just as well. According to iFixit, if anything does go wrong, actually repairing the device is a different kind o

Topics: fold ifixit repair samsung screen

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Tesla Investors Are Suing Elon Musk Over His Disastrous Robotaxi Debut

futurism.com Unknown 2025-12-06 03:08:43

Tesla shareholders have sued CEO Elon Musk and his carmaker as part of a proposed class action lawsuit, claiming that the billionaire had hidden significant risk with the company's robotaxis. As Reuters reports, the lawsuit charges that Tesla's failure to clarify the risks amounts to securities fraud. It's a major escalation, highlighting significant discontent, even among its own investors, with the way the EV maker's early testing of its long-awaited autonomous ride-hailing service has panne

Topics: company lawsuit musk robotaxis tesla

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Perplexity says Cloudflare's accusations of 'stealth' AI scraping are based on embarrassing errors

zdnet.com Steven Vaughan-Nichols 2025-12-06 03:37:00

Elyse Betters Picaro / ZDNET ZDNET's key takeaways Cloudflare claims Perplexity ignores websites' wishes in its content hunt. Other AI companies, such as OpenAI, don't wipe content, Cloudflare says Cloudflare now offers services to block aggressive AI crawlers. Perplexity is denying Cloudflare's claims. Cloudflare, a leading content delivery network (CDN) company, has accused the AI startup Perplexity of evading websites' "no crawl" directives by stealthily deploying web crawlers to scrape

Topics: ai block cloudflare content perplexity

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Tesla and Elon Musk Sued by Shareholders Who Say Robotaxis Violate Traffic Laws

gizmodo.com Matt Novak 2025-12-06 08:25:50

Tesla shareholders filed a lawsuit in federal court Monday against both the EV company and CEO Elon Musk, alleging they made “materially false and misleading statements” about the safety of their robotaxis and the regulatory scrutiny that comes with launching autonomous vehicles. Tesla launched its Robotaxi service in Austin, Texas, on June 22, but there’s a human “safety monitor” in the passenger seat, and the robotic vehicles are geofenced to a relatively small area in the city. Despite the p

Topics: austin musk robotaxi safety tesla

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SAML Shield: Drop-in protection that works for any stack

news.ycombinator.com Unknown 2025-12-06 17:05:56

Security with a simple API call. Compatible with any language or system. Easy-to-implement without any code rewrites to your identity provider or existing SAML setup.

Topics: api code compatible easy existing

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Some people are defending Perplexity after Cloudflare ‘named and shamed’ it

techcrunch.com Julie Bort 2025-12-06 17:33:03

When Cloudflare accused AI search engine Perplexity of stealthily scraping websites on Monday, while ignoring a site’s specific methods to block it, this wasn’t a clear-cut case of an AI web crawler gone wild. Many people came to Perplexity’s defense. They argued that Perplexity accessing sites in defiance of the website owner’s wishes, while controversial, is acceptable. And this is a controversy that will certainly grow as AI agents flood the internet: Should an agent accessing a website on b

Topics: ai bot cloudflare perplexity website

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Perplexity is sneaking onto websites to scrape blocked content, says Cloudflare

zdnet.com Steven Vaughan-Nichols 2025-12-06 22:42:00

Elyse Betters Picaro / ZDNET ZDNET's key takeaways Cloudflare claimed Perplexity ignores websites' wishes in its content hunt. Cloudflare said other AI companies, such as OpenAI, don't wipe content. Cloudflare now offers services to block aggressive AI crawlers. Cloudflare, a leading content delivery network (CDN) company, has accused the AI startup Perplexity of evading websites' "no crawl" directives by stealthily deploying web crawlers to scrape content from sites that have explicitly bl

Topics: ai block cloudflare content perplexity

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Latest Tech News

The Best Whitening Toothpaste of 2025, According to Dentists

Designing Software in the Large

Debian 13 arrives with major updates for Linux users - what's new in 'Trixie'

Mexico to US livestock trade halted due to screwworm spread

Debian 13 "Trixie"

I can never go back to a phone without this display feature

Mexico to US Livestock Trade halted due to Screwworm spread

Truth Social’s New AI Chatbot Is Donald Trump’s Media Diet Incarnate

‘Citizen Toxie’ Is Troma at Its Filthy, Disgusting, Overtly Offensive Best

Truth Social's New AI Chatbot Is Donald Trump's Media Diet Incarnate

The War for the Web Has Begun

What founders need to know before choosing their exit — straight from Jai Das and Roseanne Wincek — at TechCrunch Disrupt 2025

I used Perplexity to make a restaurant reservation - now I'm wondering if Google is holding us back

Exit Tax: Leave Germany before your business gets big

Doximity buys Pathway Medical for $63 million to help doctors get AI-powered answers

This Already-Approved Drug Could Stop Food Allergies’ Worst Reactions

Astronomers Discover the Earliest Black Hole Ever Confirmed

Trump's Truth Social launches AI search powered by Perplexity

Truth Social’s AI search is powered by Perplexity, but the platform can set limits on sources

Grinding Your Teeth While Sleeping? Here's How to Stop Naturally

Trump Media Is Testing an AI Search Engine Powered by Perplexity

I tried Perplexity's new reservation feature, and it surprised me with new dining spots to try

Some thoughts on journals, refereeing, and the P vs NP problem

Teardown confirms Galaxy Z Fold 7 is a repair nightmare, but maybe that’s the point

Tesla Investors Are Suing Elon Musk Over His Disastrous Robotaxi Debut

Perplexity says Cloudflare's accusations of 'stealth' AI scraping are based on embarrassing errors

Tesla and Elon Musk Sued by Shareholders Who Say Robotaxis Violate Traffic Laws

SAML Shield: Drop-in protection that works for any stack

Some people are defending Perplexity after Cloudflare ‘named and shamed’ it

Perplexity is sneaking onto websites to scrape blocked content, says Cloudflare

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