Technologies

Mars snow is dusty, and might even melt into liquid water

Dusty, dark Mars ice could suck up solar energy and maybe even get a little melty.

This story is part of Welcome to Mars, our series exploring the red planet.

Back in 2008, NASA made a big announcement that its Phoenix lander had confirmed water ice near the surface of Mars. A team of researchers has taken a new look at what Phoenix found, combined it with data from NASA’s Mars Reconnaissance Orbiter, and used computer simulations to better understand the dustiness of the ice and what that can tell us about Mars’ climate history.

Not surprisingly, Mars snow has dust mixed into it. «The dustier the ice is, the darker and thus warmer the ice gets, which can affect both its stability and evolution through time,» Arizona State University said in a statement last week. «Under certain conditions, this might also mean that the ice could melt on Mars.»

The team’s paper on the Martian ice has been accepted for publication in the Journal of Geophysical Research: Planets.

«There is a chance that this dusty and dark ice might melt a few centimeters down,» said planetary scientist Aditya Khuller, lead author of the paper. «And any subsurface liquid water produced from melting will be protected from evaporating in Mars’ wispy atmosphere by the overlying blanket of ice.»

The research points to the ice investigated by Phoenix coming from dusty snowfall sometime over the last million years. It will require further work to determine if the ice might actually melt into liquid water, but it’s an intriguing idea.

Understanding water on Mars is key to understanding the chances the red planet might have once hosted microbial life. Current-day Mars is dry, dusty and very cold, which makes it pretty inhospitable, though a study earlier this year suggested Earth microbes might be able to survive on Mars temporarily.

Ice on Mars could also be important for future human visitors who will need water resources. In 2019, NASA released a «treasure map» of water ice that could potentially be reached by astronauts.

The history of water on Mars is complex and often mysterious. Some recent studies had suggested there might be hidden briny lakes at the planet’s south pole, but newer evidence argues they might actually be frozen clays. NASA’s Perseverance rover is currently checking out a former lakebed in the Jezero Crater in a search for signs of ancient microbial life.

The new study on Martian snow and its dustiness gives scientists one more piece to place into the larger puzzle of Mars water. Could there be pockets of puddles on Mars? Perhaps. You might want to pack a straw just in case.

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Technologies

Stroke Risk Could Be Flagged Early Using Apple Watch Technology, Studies Show

The latest research shows that wearables could soon be a vital part of tracking your heart health.

For millions at risk of stroke, a simple tap on the wrist could one day save lives. New studies from the Amsterdam University Medical Center and St. Bartholomew’s Hospital in London showed that wearables, such as the Apple Watch, can improve the detection of atrial fibrillation compared to standard care. Atrial fibrillation, often referred to as A-fib, is a heart arrhythmia, which means an irregular or abnormal heartbeat. The condition can cause blood clots and is one of the leading causes of a stroke.

The Amsterdam study enrolled 437 patients aged 65 or older with elevated stroke risk and required 219 of them to wear an Apple Watch to track their heart rate for 12 hours a day for 6 months. The remaining 218 patients didn’t wear a watch and relied on standard care.

The experiment detected heart arrhythmias four times more frequently in patients wearing an Apple Watch versus those who didn’t. Specific versions of the Apple Watch use photoplethysmography, a heart rate-detecting LED light sensor, and have a built-in single-lead electrocardiogram sensor to read your heart rate.

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Wearables that track heart rate and other health markers aren’t new, and previous studies have shown promise in detecting A-fib. Although wearables are known to track this type of data, no prior research has examined how well they detect potential health risks for A-fib.

«We saw that after six months we diagnosed and treated 21 patients in the group wearing the smartwatch, of whom 57% were asymptomatic,» said Michiel Winter, a cardiologist at Amsterdam UMC, in a statement. «This was against just five diagnoses in the group receiving standard care, all of whom experienced symptoms.»

The second clinical study, conducted by St. Bartholomew’s Hospital, showed that the Apple Watch could also be beneficial for detecting A-fib symptoms earlier and for monitoring patients after a standard treatment, such as a catheter ablation. The hospital found that patients could record clinical-grade ECGs on their Apple Watches at home when experiencing symptoms. Similar to the first study, the hospital found that patients using an Apple Watch detected A-fib earlier and more frequently than those receiving standard care. Catching symptoms earlier also reduces anxiousness and the likelihood that a patient will need to be hospitalized.

The findings from these studies show that wearables such as the Apple Watch could be used for long-term heart screening to detect heart health abnormalities and improve patient care for those in treatment. And it can help diagnose those who don’t know they have the condition.

«Using smartwatches with PPG and ECG functions aids doctors in diagnosing individuals unaware of their arrhythmia, thereby expediting the diagnostic process,» said Winter.

Technologies

Today’s NYT Mini Crossword Answers for Thursday, Jan. 29

Here are the answers for The New York Times Mini Crossword for Jan. 29.

Looking for the most recent Mini Crossword answer? Click here for today’s Mini Crossword hints, as well as our daily answers and hints for The New York Times Wordle, Strands, Connections and Connections: Sports Edition puzzles.

Need some help with today’s Mini Crossword? It’s one of those neat, solid grids with no empty squares. Read on for all the answers. And if you could use some hints and guidance for daily solving, check out our Mini Crossword tips.

If you’re looking for today’s Wordle, Connections, Connections: Sports Edition and Strands answers, you can visit CNET’s NYT puzzle hints page.

Read more: Tips and Tricks for Solving The New York Times Mini Crossword

Let’s get to those Mini Crossword clues and answers.

Mini across clues and answers

1A clue: Employees, collectively
Answer: STAFF

6A clue: The «L» of TTYL
Answer: LATER

7A clue: Slowly lessen, as political support
Answer: ERODE

8A clue: Dunkin’ offering
Answer: DONUT

9A clue: Tricky things to navigate with a stroller
Answer: STEPS

Mini down clues and answers

1D clue: Toys that go on the decline in winter?
Answer: SLEDS

2D clue: Set of fortunetelling cards
Answer: TAROT

3D clue: Make amends
Answer: ATONE

4D clue: Out of patience
Answer: FEDUP

5D clue: Guitar bars
Answer: FRETS

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Technologies

Mobile Internet Without Borders: How Verum E-SIM Is Changing the Game for Travelers and Beyond

In an era when flights take just a few hours, but data boundaries remain very real, a solution has emerged that significantly simplifies life for frequent international travelers. The Verum E-SIM app offers a next-generation virtual SIM card — no plastic, no waiting for delivery, and no traditional roaming charges.

While eSIM technology itself is no longer new, Verum takes it further: the internet works in over 150 countries worldwide under clear, uniform conditions. Connection happens through the app in just a couple of minutes — choose a package (or even a global one), pay, and activate. No need to buy local SIM cards at the airport, hunt for carrier shops, or struggle with explanations in a foreign language.

One of the biggest advantages is the complete absence of hidden fees or billing surprises. Plans are fully transparent: you immediately see how many gigabytes you get and for how long. Speed and reliability are provided by partner operators in each specific country — this isn’t a single “averaged” provider for the entire world.

Another key point for many users is that no VPN is required. As long as your device is using Verum E-SIM traffic, all familiar services and websites open directly, without extra layers or speed loss.

For those traveling with a group or family, portable Wi-Fi routers with Verum eSIM support have become a great option. One profile — and the internet is shared simultaneously across multiple smartphones, tablets, and laptops. It’s convenient on the road, in a hotel, or even in a café where the local Wi-Fi is unreliable.

Payment flexibility is also a plus: the service supports regular bank cards, cryptocurrencies, and various alternative methods — so you can choose whatever feels most convenient and cost-effective for you.

In the end, Verum E-SIM is more than just another data app. It’s a way to make mobile internet as natural and hassle-free abroad as it is at home. The difference becomes especially clear when you compare a roaming bill from one of the major operators with your Verum expenses after two or three trips.

The technology is still gaining popularity, but many travelers are already saying: “For the first time in ages, internet abroad stopped being a source of stress.” Solutions like this are shaping the future of mobile connectivity — without extra cables, borders, or unpleasant surprises.

If you travel often or simply value stable internet without unnecessary hassle — it’s worth giving it a try at least once.

https://esim.verum.im

https://esimglobal.world