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Don't plug these 7 appliances (including AC units) into extension cords - here's why

Maria Diaz/ZDNET Extension cords are generally a safe solution for running power to electronics that are too far from the nearest wall outlet. But the operative word here is "electronics," which is not as all-encompassing as some people might think. Appliances (like refrigerators and toaster ovens) are obviously electronic devices, but they're in a different class from most electronics because of the amperage demands they need to function. Why you shouldn't plug everything into an extension c

I Solved the Century-Old Mystery of a Miraculous Shipwreck Survivor

I t’s the morning of August 22, 2019, and I’m in a Zodiac bouncing along the waters of the St. Lawrence River. It can hold six divers and all their gear, but this morning, there are only six of us—no gear. Far from being divers, we are curiosity seekers from New York, Vancouver, London, and Montreal, all obsessed with the sinking of the Empress of Ireland, which claimed 1,014 lives in 1914. Until a few years ago, I had never heard of the Empress and its disastrous end. And that’s staggering, be

I found the Android smartwatch with the best battery life (and it's not a Samsung or OnePlus)

ZDNET's key takeaways The Mobvoi TicWatch Pro 5 Enduro is available in Obsidian black for $349 (but on sale for $175 at the time of writing). This Google Wear OS smartwatch offers long battery life, dual-display technology, and a sapphire glass display. The watch currently runs Wear OS 3.5 and is available in one larger size. View now at Amazon For the past couple of years, I've been switching between various Google and Samsung Galaxy Watch models to pair with my Android, as Google's Wear OS

Meta announces huge new data centers, but they could gobble up millions of gallons of water per day

CEO Mark Zuckerberg said the company plans on investing "hundreds of billions of dollars" to power AI. Meta is building several gigawatt-sized data centers to power AI, as reported by Bloomberg . CEO Mark Zuckerberg says the company will spend "hundreds of billions of dollars" to accomplish this feat, with an aim of creating "superintelligence." The term typically refers to artificial general intelligence (AGI), which describes AI systems that boast human-level intelligence across multiple dom

Why I recommend this Samsung Galaxy Watch over competing Androids

ZDNET's key takeaways The 47mm Samsung Galaxy Watch Ultra normally retails for $650 on Amazon, although it occasionally goes on sale. It's a stylish-looking smartwatch with a slew of safety features and a long-lasting battery. However, it's only available in a single size (47mm, to be exact), meaning it may not be a good fit for folks with smaller wrists. $419.99 at Amazon Samsung's Galaxy Watch Ultra is the company's top-of-the-line wearable, sporting a tough exterior, an eye-catching design

Meta Is Building Massive Gigawatt Data Centers as It Pours Billions Into AI

Meta’s AI spending spree continues. After reportedly offering tens (or in some cases, hundreds) of millions of dollars to lure away top researchers from competing artificial intelligence operations, CEO Mark Zuckerberg announced via Threads that the company plans to build several multi-gigawatt superclusters to ramp up its compute power. Zuckerberg said the first of the superclusters, called Prometheus, will come online sometime in 2026, with “multiple more titan clusters” to follow. According

The Apple Watch Series 10 is still on sale for a record low price

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 is officially over after a record-long affair, but there are still standout deals available. You can currently snag the Apple Watch Series 10 for $279 , or $120 off its usual retail price. That’s tied for the lowest price we've ever seen. A deal offering 30 percent off

Big upgrades are coming to your Apple Watch - 8 features I can't wait to use on WatchOS 26

Jason Hiner/ZDNET Your iPhone, Apple Watch, and other Apple-owned devices are getting a big overhaul soon. The best part? You won't have to pay a dime for them. The tech giant recently announced all of the newest apps and updates coming to its devices over the next few months. Several new features are coming to WatchOS 26, and the beta software is now available for developers, with a public beta rollout likely coming soon. Reddit users in the r/Apple Watch subreddit are already getting into th

Nomad's Apple Watch charger may be the most ingenious accessory I've tested yet, and it's $16 off

ZDNET's key takeaways Nomad's Universal Cable for Apple Watch lets you charge your favorite Apple devices in multiple configurations. This 1.3m, Kevlar outerwoven cord features an Apple Watch fast charger and USB-C ends This cable is travel-friendly, and lets you charge devices from your iPhone. View now at Nomad Goods The Nomad Universal Cable for Apple Watch is 20% off during Nomad's anniversary sale. It's on sale for $63 (save $16). If you're an Apple user who's on the go, then you know h

The best cheap fitness trackers for 2025

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 . If you’re looking to get healthier without spending a fortune, the best cheap fitness trackers prove you don’t need to splash out on the best smartwatches to stay on top of your goals. Whether you're counting steps, keeping track of heart rate monitoring or trying to improve your sleep

The Structure of Ice in Space Is Neither Order nor Chaos—It’s Both

Ice is a key component in the universe. There are frozen water molecules on comets, moons, exoplanets, and in your drink as you cool off from the summer heat. However, under the microscope, not all ice is the same, even though it is made of the same components. The internal structure of Earth’s ice is a cosmological oddity. Its molecules are arranged in geometric structures, usually hexagons that repeat each other. Ice on Earth forms this way due to the temperature and pressure of the our plane

The underground cathedral protecting Tokyo from floods (2018)

When one of these rivers overflows, the water falls to one of five enormous 70-meter tall cylindrical tanks spread across the Channel’s length. Each of these tanks is big enough to accommodate a space shuttle or the Statue of Liberty and they are interconnected through a 6.3km long network of underground tunnels. As the water approaches the Edo River, the ‘floodwater cathedral’ Tortajada visited reduces its flow, so the pumps can push it to the river.

Topics: 3km big river tanks water

The underground cathedral protecting Tokyo from floods

When one of these rivers overflows, the water falls to one of five enormous 70-meter tall cylindrical tanks spread across the Channel’s length. Each of these tanks is big enough to accommodate a space shuttle or the Statue of Liberty and they are interconnected through a 6.3km long network of underground tunnels. As the water approaches the Edo River, the ‘floodwater cathedral’ Tortajada visited reduces its flow, so the pumps can push it to the river.

Topics: 3km big river tanks water

The Garmin Forerunner 570 is a powerful running watch but the price is all wrong

Garmin Forerunner 570 The Garmin Forerunner 570 is a sleek, high-performing running watch that nails the essentials and then some, but its price puts it in a strange no man’s land between its better-value siblings. With advanced training tools, added smart tools, and highly accurate sensors, it’s easy to love while wearing it, but unless you find it discounted, it's tricky to justify buying in the first place. I’ve spent the past few weeks testing the Garmin Forerunner 570, Garmin’s latest addi

Human-Constructed Dams Have Shifted the Earth’s Poles, Scientists Say

Humans have built so many dams around the world that the Earth’s poles have wandered away from the planet’s rotational axis, new research suggests. Over the last 200 years, humans have constructed nearly 7,000 massive dams, impounding enough water to nudge the Earth’s poles by about three feet (one meter) and cause a 0.83-inch (21-millimeter) drop in global sea levels, according to a new study in Geophysical Research Letters. This drift is possible because Earth’s solid crust forms a hard shel

Samsung Brought Back My Favorite Feature for Its Galaxy Watch 8 and Watch 8 Classic

While competitors release predictable updates to their smartwatches, Samsung isn't afraid to surprise us (for better or worse) with design and feature changes each year. And with the Galaxy Watch 8 Classic in particular, announced at Samsung's Galaxy Unpacked event, my favorite feature has made a welcome reappearance: the physical rotating bezel, a touch of romantic elegance that made me fall in love with Galaxy Watches in the first place. The Galaxy Watch 8 also has a new look and thinner frame

Garmin Forerunner 970 Review: A Very Extra Running Watch

Why, look at the leaves. It’s Garmin running watch season again! The sweatiest time of the year! As luck would have it, we’ve got a new flagship running watch to pore over in the form of the Forerunner 970. It features Garmin’s brightest AMOLED screen yet, built-in maps, a flashlight, a speaker, a mic, and more data fields than most of us mere mortals can process. It also costs $150 more than the previous running flagship, the Forerunner 965. Let’s see if it’s worth it. New Look Photograph: B

Should You Skip the Iced Coffee This Summer Because of Dehydration?

You know the drill -- it's important to stay hydrated always, but especially in the summer heat. However, that message was taken to another level when the National Weather Service in Las Vegas advised residents across parts of Nevada, Arizona and California to avoid caffeine during extreme heat. The logic is that caffeine may speed up dehydration, which increases your risk for heat exhaustion or even heat stroke. The NWS advisory soon made headlines. To see if we should actually put down our ice

I’ve been using Garmin watches for 5 years and just discovered this clever trick

Ryan Haines / Android Authority At this point, I’ve probably reviewed more than a dozen Garmin watches since taking my place as Android Authority’s resident runner. You might say it’s become a big part of my personality, but I’d argue it always was one. I’ve spent countless hours logging countless miles (alright, Strava probably has an accurate number) across everything from the Instinct to the Forerunner to the Fenix, and I thought I knew everything there was to know about Garmin’s lineup. At

The U.S. Is Testing Tiny Nuclear Reactors That Can Go Practically Anywhere

In contrast to other technological advances, the objective for next-generation nuclear reactors seems to be to scale down, not up—an initiative backed by the Department of Energy (DOE). Earlier this month, the DOE announced a conditional agreement made with private firms Westinghouse and Radiant to conduct the first reactor tests at its Demonstration on Microreactor Experiment (DOME) facility, located at Idaho National Laboratory. These experiments, featuring two trailer-sized microreactors, w

An electrician's plea: Don't plug these 7 appliances (including AC units) into extension cords

Maria Diaz/ZDNET Extension cords are generally a safe solution for running power to electronics that are too far from the nearest wall outlet. But the operative word here is "electronics," which is not as all-encompassing as some people might think. Appliances (like refrigerators and toaster ovens) are obviously electronic devices, but they're in a different class from most electronics because of the amperage demands they need to function. Why you shouldn't plug everything into an extension c

20 Best Prime Day Fitness Tracker Deals and Smart Ring Sales (2025)

In the northern hemisphere, it's hard not to spend the winter in a state of slumbering sloth, just waiting for sunshine and good times to start again. Conveniently, Prime Day fitness tracker deals (all four days of them) drop right in the middle of summer, which makes this a great time to pick up the smartwatch or smart ring that you just didn't have the cash for at Christmas. This year, you have four whole days to shop the Amazon deals, but if you don't want to take that much time, I've highli

These Prime Day smartwatch and fitness tracker deals likely won't apply tomorrow

When is Amazon Prime Day 2025? Amazon Prime Day takes place from July 8 through July 11 this year. This is when the retailer cuts deals on thousands of products, mostly ones it owns (think Kindle, Ring, and Alexa). To get in on the deals hype, other brands will discount their products during Prime Day to boost overall sales. Are health trackers really cheaper on Prime Day? I've seen some sweet discounts on health trackers during my time as an editor covering these events. We've seen record sa

The Next Apple Watch Series 11 Might Not Come Alone

Apple may have more than just the Apple Watch Series 11 up its sleeve this year. The rumor mill is buzzing with talk that the company's next big launch event could include refreshed versions of the Ultra and SE alongside its next flagship smartwatch. And while the event hasn't been officially announced, it's already shaping up to be a busy season for Apple Watch fans. Some predictions, like new sensors or improved battery life, feel within reach for this cycle, while others, like foldable scree

Topics: 11 apple new series watch

22 Best Prime Day Apple Deals—Including 40% Off AirPods

If you have one Apple product, you usually have them all—whether that's AirPods, an iPhone, an iPad, the Apple Watch, or the ubiquitous MacBook. One, or all of them, probably needs updating at any given time (it's usually the MacBook), and you now have four whole days of Prime Day deals to think about which one you're going to get. Not a Prime subscriber yet? Perhaps our list of Amazon Prime perks can convince you. Shop the best Prime Day Apple deals below. Read our Absolute Best Prime Day Deal

Apple Watch Ultra 3: Three new features are coming this fall

Apple Watch Ultra, outside of a very nice new titanium black, hasn’t been meaningfully upgraded since 2023. But this fall that’s going to change when the Apple Watch Ultra 3 arrives. Here are three new features coming to the next-generation Apple Watch Ultra 3. High blood pressure detection New health features are one thing you can consistently expect from Apple Watch upgrades. According to Mark Gurman, this year Apple is planning to introduce high blood pressure detection: The blood-pressure

Woman Says Zuckerberg's AI Data Center Filled Her Tap Water With Sediment

"I'm afraid to drink the water." Tainted Water A retiree in rural Georgia has accused Meta's new AI data center, which is situated around 1,200 feet from her home, of polluting her water. As the BBC reports, the resident, Beverly Morris, believes the construction of the tech giant's data center disrupted her private water well, causing a buildup of sediment. "I'm afraid to drink the water, but I still cook with it, and brush my teeth with it," Morris told the broadcaster. "Am I worried about

Topics: ai center data meta water

A cloud-seeding startup did not cause the Texas floods

In the wake of a disaster, it’s not uncommon for people to look for answers anywhere they can find them. The devastating floods in Texas are no exception. There are many potential reasons why so many people were killed by the swiftly rising waters, but one that some people have settled on is a practice known as cloud seeding. They claim that a cloud-seeding startup known as Rainmaker caused the storm to drop more rain than it otherwise would have. However, the data does not back up their concer

A cloud seeding startup did not cause the Texas floods

In the wake of a disaster, it’s not uncommon for people to look for answers anywhere they can find them. The devastating floods in Texas are no exception. There are many potential reasons why so many people were killed by the swiftly rising waters, but one that some people have settled on is a practice known as cloud seeding. They claim that a cloud seeding startup known as Rainmaker caused the storm to drop more rain than it otherwise would have. However, the data does not back up their concer

Some Wear OS owners can’t wait for Gemini, so they’re sideloading now

Mishaal Rahman / Android Authority TL;DR Google Gemini is coming to replace Assistant on Wear OS smartwatches. Samsung’s Galaxy Watch 8 series, which launched earlier this week, introduces Gemini, but updates are coming to existing hardware. Users have discovered that simply sideloading the Gemini APK works on many Wear OS devices. This week’s big news has been all about Samsung’s latest launches, and while the company’s new foldables and smartwatches are debuting with some hot new features,