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We Asked Dentists: What's the Best Whitening Toothpaste of 2025?

cnet.com See Full Bio 2025-10-23 17:32:00

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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A Year Later and I'm Still Obsessed With Daily Harvest's $5 Premade Pasta Meals

cnet.com See Full Bio 2025-10-31 14:51:00

I have mixed feelings about Daily Harvest smoothies. They're tasty but expensive, and some are high in sugar. And making smoothies from scratch doesn't take much time if you have the right ingredients on hand. For me, the real star of this 100% plant-based and gluten-free meal service is its premade pastas. They're healthy, filling, easy to prepare -- heat them in a skillet and the frozen cubes of sauce bring the dish together -- and cost under $11 per bag, each containing two full servings. As

Topics: daily dishes harvest pasta rice
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Toothpaste Made From Hair Works Better Than Fluoride, Scientists Say

gizmodo.com Natalia Mesa 2025-11-14 17:00:15

Looking for an effective, sustainable toothpaste? It might be on top of your head. Scientists have discovered that keratin, a protein found in hair, skin, and wool, can repair tooth enamel and stop tooth decay. It might also protect teeth even better than conventional fluoride-based toothpastes, stopping tooth decay in its tracks, according to a new study. When keratin comes into contact with saliva, it forms a protective coating that mimics natural enamel, the study shows. Not only can it shi

Topics: enamel keratin study tooth toothpaste
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Progress towards universal Copy/Paste shortcuts on Linux

news.ycombinator.com Mark Stosberg 2025-11-14 10:00:04

On Linux, Control-C and Control-V don't work for copying and pasting in terminals. The Control modifier is used for its original purpose of inserting control codes. Instead, terminal apps require an extra Shift modifier, like Control+Shift+C. But what if there were hidden shortcut combos for copy and paste on Linux that work across most apps without adding any additional software or configuration? By the end of 2025, this will be the case, and many apps already support them. Here's the scoop!

Topics: copy keyboard keys paste support
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Watch Our Livestream Replay: What GPT-5 Means for ChatGPT Users

wired.com Reece Rogers 2025-11-18 15:56:14

Is the new GPT-5 model as big of an upgrade as OpenAI claims? Why are users complaining? And what do the changes actually mean for ChatGPT users? WIRED reporters have been testing how GPT-5’s ability to code, write, and perform other tasks compares to past releases. At the livestream on August 14, our expert panel answered your questions about GPT-5 and the future of generative AI. Watch the replay of the subscriber-only livestream below. On the panel: You can check out past livestreams on all

Topics: chatgpt gpt livestream panel past
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The Best Whitening Toothpaste of 2025, According to Dentists

cnet.com See Full Bio 2025-11-25 23:26:00

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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Claude can now reference past chats, if you want it to

engadget.com Unknown 2025-11-26 16:18:06

Claude is getting a better, if selective, memory. Rather than acting as perfect catalog of everything you've talked about or shared, Anthropic says the AI chatbot now has the ability to reference past chats when asked, so you don't have to re-explain yourself. The feature seems like it could help you pick up a work project after time away, or query Claude for the details of a past research session that you don't quite remember. The key point is that Claude has to be prompted: It doesn't call on

Topics: ability anthropic chats claude past
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Anthropic’s Claude chatbot can now remember your past conversations

theverge.com Hayden Field 2025-11-26 16:56:15

is The Verge’s senior AI reporter. An AI beat reporter for more than five years, her work has also appeared in CNBC, MIT Technology Review, Wired UK, and other outlets. Posts from this author will be added to your daily email digest and your homepage feed. On Monday, Anthropic released a hotly anticipated memory function for its Claude chatbot. In a YouTube video, the company demonstrated a user asking what they had been chatting about with Claude before their vacation. Claude searches past c

Topics: ai anthropic claude memory past
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OneNote finally gets "paste text only" feature on Windows and Mac

bleepingcomputer.com Unknown 2025-11-27 16:10:39

OneNote is a powerful note-taking app, but that doesn't necessarily mean it has all the features you want. One of the missing features is 'Paste as text only,' and it's finally coming to OneNote. In a blog post, Microsoft confirmed that it's testing the ability to paste text only (plain format). Right now, when you copy content from a web page or another app and paste it into OneNote, it retains the formatting. This means colours, fonts, and text styling are copied and moved to OneNote when y

Topics: content copy onenote paste text
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Little-known leguminous plant can increase beef production by 60% (2022)

news.ycombinator.com Unknown 2025-11-28 10:20:56

The introduction of the legume had the same impact of an annual application of 150 kilos of nitrogen fertilizer per hectare in the pasture. Four-year study shows that the use of Desmodium ovalifolium can reduce time to slaughter by 30% . Reducing how long is taken until the animal slaughter represents less costs for farmers and less greenhouse gas (GHG) emissions. Legume improves bovine digestion and reduces methane emissions. A study conducted for four years has revealed that the intercropping

Topics: desmodium nitrogen pasture pastures use
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Best Whitening Toothpaste of 2025, According to Dentists

cnet.com See Full Bio 2025-12-26 00:28:00

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 intrinsically. Sachar also recommends this toothpaste, saying,

Topics: hydrogen peroxide toothpaste use whitening
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Nano-Hydroxyapatite Toothpaste: The Benefits and Risks of the Fluoride-Free Alternative

cnet.com See Full Bio 2026-01-02 23:59:03

As health concerns around fluoride in public drinking water continue to swirl, nano-hydroxyapatite toothpastes are becoming increasingly popular substitutes for fluoride toothpaste. Popular brands include Boka Davids and NOBS (No Bad Stuff), which are touted as fluoride-free alternatives that whiten teeth, repair enamel and prevent cavities. "As ingredient labels shift toward cleaner, fluoride-free formulas, one compound is taking center stage in modern oral care: nano-hydroxyapatite," Dr. Pia

Topics: fluoride hydroxyapatite nano teeth toothpaste
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NOBS Toothpaste Tablets: What Dentists Say About Its Main Ingredient

cnet.com See Full Bio 2026-01-08 05:27:03

The NOBS (No Bad Stuff) toothpaste tablets are going viral thanks to their main ingredient of nano-hydroxyapatite, a fluoride-free alternative. As health concerns around fluoride and its presence in public drinking water continue to swirl, nano-hydroxyapatite toothpastes are becoming increasingly popular. You've likely seen them on store shelves or in ads from companies like Boka and Davids, marketed as fluoride-free alternatives for your toothbrush that claim to whiten teeth, repair enamel and

Topics: fluoride hydroxyapatite nano teeth toothpaste
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Is Nano-Hydroxyapatite Toothpaste an Effective Fluoride Alternative? Dentists Weigh In

cnet.com See Full Bio 2026-01-19 08:06:03

Picking the best toothpaste can be a challenge, especially with newer ingredients being added to the market. Nano-hydroxyapatite is a timely example and the star ingredient for popular brands like Boka and Davids. Amidst health concerns around fluoride and Robert F. Kennedy Jr., US Secretary of Health and Human Services, proposing to remove it from public water, nano-hydroxyapatite has been promoted as an effective alternative to fluoride in toothpaste. Many claim that it can repair enamel, prev

Topics: fluoride hydroxyapatite nano teeth toothpaste
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Repasting a MacBook

news.ycombinator.com Christian Selig 2026-01-20 18:53:27

You should repaste your MacBook (but don't) My favorite memory of my M1 Pro MacBook Pro was the whole sensation of “holy crap, you never hear the fans in this thing”, which was very novel in 2021. Four years later, this MacBook Pro is still a delight. It’s the longest I’ve ever owned a laptop, and while I’d love to pick up the new M4 goodness, this dang thing still seems to just shrug at basically anything I throw at it. Video editing, code compiling, CAD models, the works. (My desire to updat

Topics: fan just macbook paste thermal
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Repaste Your MacBook

news.ycombinator.com Christian Selig 2026-01-23 06:53:27

You should repaste your MacBook (but don't) My favorite memory of my M1 Pro MacBook Pro was the whole sensation of “holy crap, you never hear the fans in this thing”, which was very novel in 2021. Four years later, this MacBook Pro is still a delight. It’s the longest I’ve ever owned a laptop, and while I’d love to pick up the new M4 goodness, this dang thing still seems to just shrug at basically anything I throw at it. Video editing, code compiling, CAD models, the works. (My desire to updat

Topics: fan just macbook paste thermal
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Repaste Your MacBook (But Don't)

news.ycombinator.com Christian Selig 2026-01-23 12:53:27

You should repaste your MacBook (but don't) My favorite memory of my M1 Pro MacBook Pro was the whole sensation of “holy crap, you never hear the fans in this thing”, which was very novel in 2021. Four years later, this MacBook Pro is still a delight. It’s the longest I’ve ever owned a laptop, and while I’d love to pick up the new M4 goodness, this dang thing still seems to just shrug at basically anything I throw at it. Video editing, code compiling, CAD models, the works. (My desire to updat

Topics: fan just macbook paste thermal
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Inside the US power struggle over coal

technologyreview.com Casey Crownhart 2026-03-09 02:00:00

But the Trump administration wants to keep coal power alive, and the US Department of Energy recently ordered some plants to stay open past their scheduled closures. Here’s why there’s a power struggle over coal. Coal used to be king in the US, but the country has dramatically reduced its dependence on the fuel over the past two decades. It accounted for about 20% of the electricity generated in 2024, down from roughly half in 2000. While the demise of coal has been great for US emissions, the

Topics: coal electricity energy past power
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Microsoft accidentally swapped Windows 11’s startup sound with Vista’s

theverge.com Tom Warren 2026-03-16 01:25:35

is a senior editor and author of Notepad , who has been covering all things Microsoft, PC, and tech for over 20 years. If you’ve been having flashbacks to 2007 while using your PC over the past few days, you’re not alone. Microsoft has mistakenly replaced Windows 11’s boot sound — in test versions of the OS — with the startup chime from Windows Vista. Windows testers started noticing the issue shortly after Microsoft released its latest Dev Channel build of Windows 11 on Friday afternoon. The

Topics: microsoft past sound vista windows
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Twitch caps streamers’ storage at 100 hours of highlights and uploads

techcrunch.com Aisha Malik 2025-11-14 06:08:58

Twitch on Wednesday announced it will begin limiting streamers to 100 hours of highlights and uploads, and will delete content if a channel exceeds the limit. The company said it’s introducing the change because highlights haven’t been effective in driving discovery or engagement, and because storage is costly. The storage cap goes into effect on April 19. The change applies to highlights, which are snippets edited from a channel’s past broadcasts, as well as other uploaded content. Clips and

Topics: broadcasts highlights past storage twitch
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