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Solar-powered beacons in the Saudi Arabian desert guide lost travelers to water.

Chief among my worries as a kid was what I considered the high probability that at some point in my life I would be trapped in quicksand. It felt extremely important that I remember all the tricks and techniques for getting out — just in case! A close second would have to be getting lost in the desert and dying of dehydration. You absolutely had to watch out for those deadly mirages, where the light on the horizon bends in such a way that you're certain you can see water up ahead.

At least one of those fears was fairly well-founded. All jokes aside, the desert is an incredibly dangerous place. It turns out that thousands of people get lost and go missing in deserts across the world every year. The Sahara Desert, the largest hot desert in the world, claimed a staggering 8,000 lives alone in 2023. These aren't overly flippant explorers, for the most part. Many migrants fleeing conflict zones across the desert become lost and suffer a tragic fate while trying to navigate the 3.6 million square mile area. There are many things that make the desert deadly, but dehydration with no access to water is at the top.

A team in Saudi Arabia has been testing a new technology that could drastically reduce dehydration-related deaths in the country's Al-Nafud Desert, and it looks like something straight out of a video game.

Though the Al-Nafud desert is quite a bit smaller than the Sahara standing at about 25,000 square miles, it can still be daunting to cross. Most years, hundreds of people go missing with several dozen of them perishing in the process.

An explorer named Mohammad Fohaid Al-Sohaiman had a brilliant idea to help lost travelers find water. Having been rescued in the desert himself, even as an experienced survivalist and outdoorsman, he knew there had to be a better way.

“Many people lost their lives in the desert near water resources because they did not know that water resources were close to them,” he told Arab News.

The idea: Beacons made of laser light, shot directly into the sky near water sources such as water wells. These powerful lights could be seen from miles away and would be powered by solar panels, ensuring they never go dark.

The plan is to eventually install 100 of the beacons throughout the Saudi Arabian desert.

The program to install the life-saving beacons began in 2021. It's still getting attention and inspiring awe all over the world.

A recent viral Reddit thread highlighted the innovative laser lights, and users were impressed:

"Absolutely brilliant! The rest of the world should immediately begin to implement this system in their desert areas as well as open oceans where water, food and communication devices could be stored for boaters in distress."

"This is such an amazing idea."

Others joked to the beams look like "save points" or "checkpoints" in a video game. They're not wrong!

Some have criticized the beacons, however, claiming that the light pollution may harm the desert's natural environment and residents like nocturnal animals and insects.



The desert holds vast potential for solar power due to its massive open spaces and plentiful sunlight. In fact, solar farms are common in deserts all over the world.

However, there are a couple of limitations that stop us from covering all the world's deserts in solar panels and completely converting to solar energy.

First, people underestimate how destructive and harsh the desert environment really is. Sand is incredibly corrosive, especially when whipped around in high-powered sandstorms. Maintaining solar equipment in the desert is incredibly challenging and costly.

Second, we think of deserts as open wasteland, but that's a misnomer. They're actually incredibly biodiverse natural habitats, home to many different forms of plant, animal, bird, and insect life. The desert habitat is no less important to preserve than rainforests or oceans.

Third, while solar energy is generally considered incredibly eco-friendly, massive solar farms can actually put off quite a bit of heat. A desert-sized solar farm would emit so much heat that it could negatively contribute to global warming and have devastating effects.


In any case, the life-saving beacons are a genius idea and a fantastic use of solar technology. Once the program is fully rolled out, it could save dozens or even hundreds of lives every year.

Just imagine a similar operation conducted in the massive Sahara Desert, or even in remote stretches of the American southwest.

As one commenter stated perfectly, "Now this is the type of innovation for the future I can get behind."

UCI doctoral candidate Mya Le Thai has developed a nanowire-based technology that allows lithium-ion batteries to be recharged hundreds of thousands of times.

There's an old saying that luck happens when preparation meets opportunity.

There's no better example of that than a 2016 discovery at the University of California, Irvine, by doctoral student Mya Le Thai. After playing around in the lab, she made a discovery that could lead to a rechargeable battery that could last up to 400 years. That means longer-lasting laptops and smartphones and fewer lithium ion batteries piling up in landfills.

A team of researchers at UCI had been experimenting with nanowires for potential use in batteries, but found that over time the thin, fragile wires would break down and crack after too many charging cycles. A charge cycle is when a battery goes from completely full to completely empty and back to full again.

But one day, on a whim, Thai coated a set of gold nanowires in manganese dioxide and a Plexiglas-like electrolyte gel.

batteries, renewable energy, energy, renewable batteries, rechargeable batteries, innovationBatteries being recycled at WRWA, London. Nov ‘21Photo by John Cameron on Unsplash

"She started to cycle these gel capacitors, and that's when we got the surprise," said Reginald Penner, chair of the university's chemistry department. "She said, 'this thing has been cycling 10,000 cycles and it's still going.' She came back a few days later and said 'it's been cycling for 30,000 cycles.' That kept going on for a month."

This discovery is mind-blowing because the average laptop battery lasts 300 to 500 charge cycles. The nanobattery developed at UCI made it though 200,000 cycles in three months. That would extend the life of the average laptop battery by about 400 years. The rest of the device would have probably gone kaput decades before the battery, but the implications for a battery that that lasts hundreds of years are pretty startling.

- YouTubewww.youtube.com

“Mya was playing around, and she coated this whole thing with a very thin gel layer and started to cycle it,” said Penner added. “She discovered that just by using this gel, she could cycle it hundreds of thousands of times without losing any capacity.”

“That was crazy,” he added, “because these things typically die in dramatic fashion after 5,000 or 6,000 or 7,000 cycles at most. ”"The big picture is that there may be a very simple way to stabilize nanowires of the type that we studied," Penner said. "If this turns out to be generally true, it would be a great advance for the community." Not bad for just fooling around in the laboratory.

Since her discovery, Mya Le Thai has gone on to a successful career as the Principal Scientist with the Enevate Corporation,

This article originally appeared eight years ago.

Science

Expert explains why turning your phone off every day could protect you from getting hacked

Pulitzer Prize winning investigative journalist Ronan Farrow shares how this simple tip can offer protection in a time of less-than-stellar privacy regulations.

He also explains why tin foil might not be the best strategy for privacy.

There are just so many ways for important information held on your phone to be swiped—from subscription based apps that secretly send private customer data to Facebook to fake accounts that get your friends to invest in some kind of fake crypto.

And of course—this is more than a modern day inconvenience. It poses real threats to democracy and global human rights, which is why so many are calling for more regulations and safeguards. Of course, as with most regulations, change isn’t coming fast. Which isn’t good news, considering how rapidly technology evolves.

However, Pulitzer Prize winning investigative journalist Ronan Farrow has an incredibly simple tip for preventing our phones from being hacked: Turn them off more often.

While appearing on the Daily Show to promote his new documentary, Surveilled, Farrow told correspondent Desi Lydic that we as a society should be "freaking out" more about the lack of government restraints about spyware technology, saying that it could turn the country “into an Orwellian surveillance state,” affecting anyone who uses a device, essentially—not just political dissidents.

But, as Farrow noted, turning your phone off and on every day is an easy way to protect yourself, since most current forms of spyware “will be foiled by a reboot.” And even if you aren’t, say, a journalist of political activity (i.e. common targets for malware), you’re thwarting apps from monitoring your activity or collecting your data. And better still, you’re making it more difficult for hackers to steal information from your phone. Privacy protection aside, it’s a great way of just keeping your device healthy. Basically, it seems like the age-old solution for virtually all tech issues still holds up.

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There are a few other things worth turning off now and then, such as bluetooth and location devices when you’re not using them, according to the NSA. In addition, Farrow also suggested keeping devices updated, and perhaps most important of all, actually writing to your representative about the issue.

However, when it comes to wrapping devices in tinfoil as a makeshift Faraday cage…that might not be the best use of one’s aluminum.

“Experts vary on exactly how effective that approach is,” Farrow told Lydic, just before quipping, “we need better policies. Not just better tinfoil.”

Expanding on Farrow’s 2022 New Yorker investigative exposé on the notorious spyware Pegasus, Surveilled delves into the multibillion-dollar industry of commercial spyware and its potential threats, making it evidently clear that this is not an issue for the elite few, or one to ignore until the future.

Surveilled is available on Max now.


This story originally appeared last year.

Imagine you’re at a Six Flags theme park, and after waiting an hour in line, you sit down in the front seat of The New Revolution, a looping roller coaster that hits top speeds of up to 55 miles per hour. The ride operator calls, “All clear,” your coaster takes off from the loading station, and you make your way up a lift hill. As the car goes clack clack clack, you realize that the lap bar was never secured and there’s no way back.

What would happen if you were stuck on a looping roller coaster and the harness stopped working? Could you hold on to the person securely seated next to you and make it through the loop, or would you be thrown out of the car for what would be a tragic ending? Popular YouTuber Zach D. Films, who specializes in digital recreations, showed what would happen if you rode a looping roller coaster without a harness, and the good news is that there’s a decent chance you will survive. (Not that you'd want to try, though.)

What would happen if I rode a rollercoaster without a harness?

“If the bar came loose while you were riding a roller coaster, you'd probably expect to immediately fall out, but that probably wouldn't happen,” Zach D. begins his video.

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According to Zach D., the competing forces of gravity and the speed at which you’re moving counteract each other, most likely keeping you safely in your seat. “You see, as you're being pulled into the loop, gravity tries to pull you down towards the ground, but because of the speed you're going and the direction of the tracks, a special force actually pushes you further down, outweighing the pull of gravity and keeping you in your seat,” Zach D. says in his video.

Another example of these forces is filling a bucket with a few inches of water, attaching a rope, and swinging it around your head. If you forcefully spin the bucket, the water will remain inside, even without anything to restrain it from falling out.


Even though science shows that it is possible to ride a looping rollercoaster without restraints, there aren't many people out there who want to try it. In November 2024, a passenger on the Desert Storm coaster at Castles and Coasters in Phonix, Arizona, claimed that his restraint released while he was on the ride. The restraint failure happened as the coaster climbed its first lift hill so he could exit quickly and make it to the emergency stairs near the coaster's peak.

"We started going up, everything seems to be OK. And then, when we get closer to the top, I hear a click. Different from the click of the roller coaster going up on the chain," he said. "So I check my bar, and when I pushed it, it released. It opened." The incident was caught on camera, and the footage is chilling.

- YouTubewww.youtube.com

While the idea of riding a roller coaster without a lap bar is horrifying, Zach D. proves that physics may be your unexpected friend in case of a lap bar failure. That being said, let’s keep those restraints locked and double-checked. Roller coasters are meant to be fun, not a test of your centrifugal force knowledge.