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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."

via Pixabay

Solar panels at sundown.

The biggest drawback of solar power is that panels generate very little power on cloudy days and zero at night. People with residential solar systems usually have a setup that generates more electricity than they use during the day, so they can live off the power company or a battery at night.

The monetary savings come from generating more power during the day than you take from the grid at night over the course of the year.

This arrangement is fine for people who live in developed areas. But for the 750 million people around the world who live in areas without an electrical grid, solar panels aren’t a reliable power source and battery storage is expensive.

A new development from Stanford University may be a big help to people living in underdeveloped areas that are completely off the grid. The university researchers created a solar panel that generates a significant amout of power during the day and a small amount at night.

According to the study published earlier this month in the journal Applied Physics Letters, the new panels can serve as a "continuous renewable power source for both day and nighttime.”


The new panels are pretty easy to make, too.

“What we managed to do here is build the whole thing from off-the-shelf components, have a very good thermal contact, and the most expensive thing in the whole setup was the thermoelectric itself,” Zunaid Omair, a metrology engineer from Stanford University and one of the study’s authors, said.

The solar panels function like a traditional panel during the day but run in reverse to continue generating electricity at night. After the sun goes down, the panels are able to generate electricity off the difference in temperature between the ambient air and the solar panel's surface.

(Or for you physicists out there, it works by tapping into the heat being radiated from the surface of the solar cells as infrared light into outer space.)

A big drawback is that the panels aren’t very effective on cloudy nights.

When pointed at the night sky, the solar panels generated a power output of 50 milliwatts per square meter or about 0.04% of the power output of a traditional solar cell during the daytime. This is enough power to run a low-wattage LED light or to charge a cell phone.

via Matthew Stevens/Flickr

“The nice aspect about this approach is that you essentially have a direct power source at night that does not require any battery storage,” Shanhui Fan, a professor at Stanford’s School of Engineering, said according to New Scientist.

Battery storage for solar power can be unreliable and expensive, so these new panels can be a big benefit to people in areas that are without a traditional power grid. "Our approach can provide nighttime standby lighting and power in off-grid and mini-grid applications, where [solar] cell installations are gaining popularity," the study said.

The ability to run an LED light or a phone charger in the middle of the night may not seem like a game-changer to most people in the developed world, but it can make a huge difference in the quality of life for people living in remote areas of the planet. Further, this is just the beginning. Traditional solar panels have come a long way over the past few decades. Who knows what the future holds for this promising new technology?

The Trump Administration has approved the largest solar power project in U.S. history. The $1 billion Gemini Solar Project constructed by Solar Partners, XI LLC (Arevia) will be located in the desert just north of Las Vegas, Nevada. The plant will span approximately 7,100 acres of federal land and generate enough electricity to power 260,000 homes in the region.

When it's completely finished in 2022, the solar project will become the eighth-largest solar-producing facility in the world.

The project will produce power for NV Energy, part of Warren Buffett's Berkshire Hathaway conglomerate. It will work to meet Nevada's requirement to have 50% of the state's energy produced by renewables by 2030 and 100% by 2050.

The solar farm's energy may also be shipped out to Southern California.



via Bureau of Land Management

The project will annually offset over 380,000 metric tons of carbon dioxide. That's the equivalent of taking 83,000 cars off the road.

The plant will have a 380-megawatt battery storage system that will hold power created during the day to be released when demand peaks in the early evening.

"Despite the challenges of the coronavirus, we're pleased to see that Nevada will soon be home to one of the biggest solar projects in the world," Abigail Ross Hopper, president and CEO of the Solar Energy Industries Association, said in a statement.

"The solar industry is resilient and a project like this one will bring jobs and private investment to the state when we need it most," she continued.

The decision is surprising given Trump's history of standing against renewable energy.

Trump has incorrectly stated that solar power is "not strong enough and it's very very expensive."

He also significantly hobbled the solar industry in 2018 by placing 30% tariffs on solar imports. The tariffs have since been reduced to 20%, but the economic damage has been significant. The tariffs cost more than 62,000 U.S. jobs and cost $19 billion in new private sector investment.

The goal was to inspire U.S. panel production but that has actually decreased since the tariffs went into effect.

The decision to build the solar panel farm show's the administration's lack of cohesive energy policy but it's a definite positive in an era when the federal government has taken a firm stance against clean, renewable energy.

In spite of the Trump Administration's war against renewables, the country had made significant strides when it comes to solar installations.

According to the EIA, a division of the Department of Energy, the U.S. produced about 11% of the world's solar energy in 2018 and it accounted for about 1.8% of the U.S. energy mix in 2019.

"Solar accounted for 40 percent of all new electric generating capacity added to the grid in 2019, more than any other energy source," the non-profit The Solar Energy Industries Association (SEIA) said in a report. That was enough energy to power 14.5 million American homes.

via Gardens By the Bay

Singapore's National Parks Board has created a 250-acre oasis as apart of a redevelopment by the city-state to attract ecotourism to the area.

Gardens By The Bay is home to two biodomes — the Cloud Forest and Flower Dome — that combine to be the size of four football fields and showcase 220,000 plants form all over planet Earth.

But the main attraction has to be 18 supertrees that rise between 80 to 160 feet high and have a wide variety of ferns and tropical flowers that climb its mechanical outsides.


The trees feature photovoltaic cells to harvest solar energy to power the eco-park and they also act as air exhausts for the Energy Centre and Cooled Conservatories.

via Gardens By the Bay

During the day, the trees' massive canopies provide share for park-goers and at night they light up to create beautiful media displays that light up the sky.

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via Gardens by the Bay


via Gardens by the Bay

Park-goers can walk among the treetops on catwalks that rise 70 feet above ground or take in panoramic views of the Gardens and the Marina Bay skyline from an observation bar.

Lee Kuan Yew, the first prime minister of the Republic of Singapore, said the project showcases "what we can do to bring the world of plants to all Singaporeans."

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The new development isn't just a tribute to the world's biodiversity, it also focuses on Singapore's ethnic makeup. Visitors and pursue Colonial, Malay, Indian, and Chinese-themed gardens and learn about how the plants played a part in Singapore's history.

Gardens By the Bay is a great example of a country creating a commercial enterprise that brings in tourism that's also a celebration of the environment. The more we learn to appreciate the beauty and bounty of the Earth's natural environment, the more likely people will be to protect it.