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How the Universe and Its Mirrored Version Are Different

The original version of this story appeared in Quanta Magazine. After her adventures in Wonderland, the fictional Alice stepped through the mirror above her fireplace in Lewis Carroll’s 1871 novel Through the Looking-Glass to discover how the reflected realm differed from her own. She found that the books were all written in reverse, and the people were “living backwards,” navigating a world where effects preceded their causes. When objects appear different in the mirror, scientists call them

How to Clean Hearing Aids

You can also use this tool to gently brush the tip of the dome of each eartip, where wax is most likely to accumulate. If any tenacious wax is stuck to the tip of the dome, try using the wire loop on the reverse of the brush to gently scoop it out. Next, check the back of the receiver, where the wire attaches to it, and brush this area as well. You can use a microfiber cloth to remove any material that is dislodged during this step. Some very old hearing aids have a long vent that runs through

Weird-shaped notebooks make me want to write again

Andru Marino is an audio and video producer at The Verge. “I make videos on our YouTube / TikTok / Instagram channels, and have produced our podcasts like Vergecast, Decoder, and Why’d You Push That Button?” He also keeps a lot of notes, and his latest favorite places to keep them are the Triangle and Sidekick notebooks. I asked him about them. Where did you first hear about these notebooks? I don’t really remember when I first saw the Triangle Notebook. It was probably an Instagram ad. I had

The 7 gadgets I never travel without (and how they make every trip easier)

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

I changed 3 settings on my PS5 for an instant performance boost

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

I changed 6 settings on my Samsung TV to give it a significant performance boost

Kerry Wan/ZDNET Say you recently picked up a shiny new TV. You unbox it like a kid at Christmas and prepare to indulge in all its visual glory. You think to yourself, "This is 2025. TV technology is sizzling, and it's going to look amazing no matter what." So you plug it in and don't take one look at the default settings. Big mistake. Also: Your car's USB port is seriously underutilized: 5 features you're not taking advantage of I've been guilty of it. And I'm okay with that because it's wide

Why I use this cheap Android tablet more than my iPad Pro - and don't regret it

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

6 settings I recommend changing ASAP on iOS 18.5 (and how they make a difference))

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. When you click through from our site to a retailer and buy a product or

Requiem for a Solar Plant

Requiem for a Solar Plant The email landed like a brick through a plate glass window. "...requiring reconductoring of 1.71 miles at a cost of $795,150...limiting output to 3MW..." I stared at my laptop screen, the blue light illuminating the shadows under my eyes in my darkened California living room. Outside, endless February rain tapped against the windows like impatient fingers. My gut churned, a familiar discomfort that had become my constant companion over the past year. This wasn't just

When Humans Learned to Live Everywhere

Geography is one of the things that sets apart modern humans. Our closest living relatives — chimpanzees and bonobos — are confined to a belt of Central African forests. But humans have spread across every continent, even remote islands. Our species can thrive not only in forests, but in grasslands, swamps, deserts and just about every other ecosystem dry land has to offer. In a study published on Wednesday, scientists pinpoint the origin of our extraordinary adaptability: Africa, about 70,000

Debunking NIST's calculation of the Kyber-512 security level (2023)

The cr.yp.to blog 2023.10.03: The inability to count correctly: Debunking NIST's calculation of the Kyber-512 security level. #nist #addition #multiplication #ntru #kyber #fiasco [Sidney Harris cartoon used with permission. Copyright holder: ScienceCartoonsPlus.com.] Quick, what's 240 plus 240? It's 280, right? No, obviously not. 40 plus 40 is 80, and 240 times 240 is 280, but 240 plus 240 is only 241. Take a deep breath and relax. When cryptographers are analyzing the security of cryptogra

Show HN: To-Userscript: Chrome Extension to Userscript Converter

Demo 2x Speed (conversion takes 4s total normal speed, incl. downloading) to-userscript.mp4 Demo but normal speed Screen.Shot.2025-06-20.at.7.59.06.AM.mov A powerful CLI for converting browser extensions into standalone userscripts. What is this? to-userscript bridges the gap between complex, packaged browser extensions and simple, portable userscripts. It takes an extension from the Chrome or Firefox store, a local directory, or a zip/xpi, and creates a single .user.js file that can be run i

Denmark's Archaeology Experiment Is Paying Off in Gold and Knowledge

Ole Ginnerup Schytz, an engineer in Denmark’s sleepy Vindelev agricultural area, had used a metal detector only a handful of times when he found a bent clump of metal in a friend’s barley field. He figured it was the lid from a container of tinned fish and tossed it in his junk bag with the other bits of farm trash that had set his metal detector beeping: rusty nails, screws, scrap iron. A few paces away he dug up another shiny circle. Someone had clearly enjoyed a lot of tinned fish here—into t

New body size database for marine animals is a “library of life”

Legend has it that physicist Ernest Rutherford once dismissed all sciences other than physics as mere "stamp collecting." (Whether he actually said it is a matter of some debate.) But we now live in the information age, and scientists have found tremendous value in amassing giant databases of information for large-scale analysis, enabling them to explore different kinds of questions. The latest addition is the Marine Organizational Body Size (MOBS) database, an open-access resource that—as its

Cloudflare CEO warns AI crawlers and summaries are eroding the internet's business model

In context: Cloudflare CEO Matthew Prince recently reiterated his warning that generative AI crawlers and summaries threaten the foundations of the internet's business model. To protect publishers from a flood of artificial AI traffic that offers virtually no authentic site visits in return, the company is devising methods to combat AI scrapers. Speaking at an Axios event in Cannes last week, Prince explained that search engines and chatbots using generative AI to summarize web content have sig

Using the Ocean to Suck Up CO2 Could Come With the Small, Unintended Side Effect of Wiping Out Marine Life

As global temperatures soar and emissions remain higher than ever, scientists are exploring the dramatic, planet-wide interventions we could take to stave off the climate crisis. One of the most intriguing possibilities involves using the ocean, already the world's largest carbon sink, to suck up even more of the greenhouse gas by removing some of the carbon that it already stores. Dozens of startups are already experimenting with this form of climate intervention, which is sometimes referred

This Amazon bundle includes the Sony WH-1000XM6 headphones and a free $30 gift card

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 . There are a few undeniable truths in this world: the sky is blue, Mario Kart is always a good idea and Sony's 1000X line of headphones is amazing. The latter was proved true once again when Sony released the WH-1000XM6 edition of its wireless noise canceling headphones in May. The only

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

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 . Amazon Prime Day 2025 will be here soon on July 8-11, but as to be expected, you can already find some decent sales available now. Amazon always has lead-up sales in the days and weeks before Prime Day, and it’s wise to shop early if you’re on the hunt for something specific and you se

Captain Cook's missing ship found after sinking 250 years ago

Your support helps us to tell the story Read more Support Now From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging. At such a critical moment in US history, we need

The Art of Bijective Combinatorics

- the correponding set of slides of each lecture, - a website which enable one to navigate inside the videos, in the same way you turn around the pages of a book. For example if you click on the time given just after the slide number corresponding to one of the videos, you will get, up to one second, to exact position in the video. an introduction to the video-book ABjC is given at the beginning of the video of the Epilogue (from 2' 02" to 8' 42") This video-book on bijective combinatorics is

Samsung embeds IronSource spyware app on phones across WANA

In recent months, we have received numerous reports from users across West Asia and North Africa (WANA) expressing alarm over a little-known but deeply intrusive bloatware application—AppCloud—pre-installed on Samsung’s A and M series smartphones. Without users’ knowledge or consent, this bloatware collects sensitive personal data, cannot be removed without compromising device security, and offers no clear information about its privacy practices. AppCloud, developed by the controversial Israeli

YouTube Will Add an AI Slop Button Thanks to Google’s Veo 3

I told you that AI slop was coming for your YouTube content, and did you believe me? I don’t know, maybe you did, but if you didn’t believe before, you certainly will now. According to YouTube CEO Neal Mohan, who gave a keynote at the Cannes Lions International Festival of Creativity on Wednesday, YouTube is getting a new tool that generates Shorts from “scratch.” By scratch, I mean with the help of Google’s recently unveiled Veo 3 AI generator. That’s right, a one-stop shop for AI slop is incom

Reddit Looks to Get in Bed With Altman’s Creepy ‘World ID’ Orbs for User Verification

Gaze into the Orb if you want your upvotes. According to a report from Semafor, Reddit is actively considering partnering with World ID, the verification system co-founded by OpenAI CEO Sam Altman, to perform user verification on its platform. Per the report, Reddit’s potential partnership with World ID would allow users to verify that they are human by staring into one of World ID’s eye-scanning orbs. Once confirmed to be a real person, users would be able to continue using Reddit without reve

Are Ford and GM Still American?

For decades, Ford and General Motors have been symbols of American industry, blue-collar pride, and heartland grit. From the rugged Ford F-150 to the all-American Chevy, the Detroit Big Three — Ford, GM, and Chrysler (now part of Stellantis) — have dominated the auto market with vehicles built and sold across the United States. The Ford F-150 is a cultural symbol. For many, Detroit remains the heartland of the U.S. auto industry, a perception reinforced by billions of dollars in recent investme

I Get 5G on My Phone at Home, But Why Can't I Get 5G Home Internet? Here's What I Learned

If you can get 5G on your phone while you're at home, you should be able to get 5G internet at your house, right? Not exactly. 5G is no longer new, thanks to efforts from major carriers AT&T, T-Mobile and Verizon, but 5G home internet service isn't strictly available at the same addresses as 5G cellular service. I ran into this when I switched my mobile carrier from AT&T cellular service to T-Mobile phone service. I was immediately impressed with the phone's 5G performance. However, even though

I Ordered a Switch 2 From Verizon. It Didn't Go Well

Back on June 5, the Switch 2's launch day, I wrote about Belkin's new accessories for Nintendo's latest game console. I noted I hadn't tried the Belkin accessories yet with my Switch 2; I ordered my console from Verizon, and it wasn't scheduled to arrive until the following day. My Switch 2 didn't arrive on June 6. Or the day after. Or a week later. Or ever. It didn't take a genius to figure out what had happened: Verizon, a company that you don't typically associate with selling game consoles

12 Probiotic-Rich Foods to Keep Your Gut Healthy

Many people talk about probiotics as supplements, but you can actually get these microorganisms through your diet by eating foods high in probiotics. Probiotics can provide benefits such as helping with chronic health issues like IBS and IBD, supporting digestion and maintaining a healthy balance in your gut microbiome by encouraging beneficial bacteria to grow. Fortunately, many probiotic foods are already in your fridge or pantry. You can also find them easily at your local grocery store, so

Ford Ranger Plug-In Hybrid Review: Prices, Availability, Specs

Fitness for purpose. Take a deftly aimed power tool to all the marketing flim-flam, and you can’t go far wrong with that mantra. There’s no messing around when it comes to a pick-up truck, a vehicle that has a clear job to do, and in most cases does it admirably. Except that even this segment isn’t immune to mission creep, and these hardy vehicles are now expected to double as workhorse and acceptable all-round family transport. The Ford F-150 may typify the breed, but outside of the US the Ran

Inside the courthouse reshaping the future of the internet

The future of the internet will be determined in one building in Washington, DC — and for six weeks, I watched it unfold. For much of this spring, the E. Barrett Prettyman Courthouse in downtown Washington, DC, was buzzing with lawyers, reporters, and interested onlookers jostling between dimly lit courtrooms that hosted everyone from the richest men in Silicon Valley to fired federal workers and the DOGE-aligned officials who terminated them. The sprawling courthouse, with an airy atrium in th