Would Madinah Become Saudi Arabia’s ‘City of Lights’?

The Prophet’s Mosque in Medina, Saudi Arabia. Photographer: Roslan Rahman/AFP/Getty Images
The Prophet’s Mosque in Medina, Saudi Arabia. Photographer: Roslan Rahman/AFP/Getty Images
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Would Madinah Become Saudi Arabia’s ‘City of Lights’?

The Prophet’s Mosque in Medina, Saudi Arabia. Photographer: Roslan Rahman/AFP/Getty Images
The Prophet’s Mosque in Medina, Saudi Arabia. Photographer: Roslan Rahman/AFP/Getty Images

Since the second half of the 19th century, Paris’ inhabitants and visitors have known it as the city of lights (La Ville Lumière). Some historians suggest the name was given to the French capital because it was a hub for culture and intellect during the Age of Enlightenment, and its early adoption of a street light system after Napoleon’s demolition of Middle Ages’ neighborhoods and routes to make a modern city with advanced lighting.

Today, one century later, would Al Madinah Al Munawwarah in Saudi Arabia become this era’s city of lights?

This question is becoming more and more valid after Al Madinah Region Development Authority (MMDA) approved an inclusive study to upgrade and renew lightning with the help of global experiences and expertise in creative lighting solutions. The study has been conducted upon the directives of Madinah Governor and MMDA Chair Prince Faisal bin Salman bin Abdulaziz.

The Start with the surrounding of The Prophet’s Mosque

The first phase of the study is supposed to target the surrounding of The Prophet’s Mosque and expand gradually to include all the vital landmarks and sites in Madinah. It aims at creating a unique identity that suits the identity of Al Madinah Al Munawwarah, as well as offering inhabitants and visitors new, inspiring visual experiences that meet the Quality of Life Programs and promote more opportunities in tourism, trade, and investment in the region.

Religious significance of Madinah

Eng. Fahad Albuliheshi, MMDA chief executive, said the foundations of the study project to renew and upgrade the lighting identity of Madinah, takes into consideration “its religious significance for Muslims, and highlights the interest the government gives to the two holy cities and mosques.”

The relative feature and unique, urban architecture of Madinah “makes it a priority to renew and upgrade the lighting in the city with development and enhancement plans that benefit from global experiences and expertise in the lighting solution sector to help improve the inhabitants’ life quality and enrich the experience of people visiting the city of the Prophet (Pbuh). These plans come as part of the programs dedicated to serving visitors and promoting the system of service and public facilities in the city,” he told Asharq Al-Awsat.

Model studies to shed light on Madinah’s landmarks

When asked about the project and its role in highlighting the city’s landmarks, Albuliheshi said that “we decided to benefit from previous expertise in architectural lighting to achieve model studies that highlight the landmarks of Madinah and improve the urban and visual landscape, enhance the major elements in the historic buildings and sites, benefit from visual effects to enhance serenity and inner peace for visitors in the pedestrian lanes, limit the annoying impact of random lighting, in addition to all the social benefits that modern lighting could bring to the city.”

Lightning quality that “boost environmental sustainability”

Because unique models require critical efforts that focus on results and enhance sustainability, MMDA chief executive assured that “the initiative will consider the right and wise distribution of lights, and the quality of lighting that suit the consumption demands. The plan will also focus on energy consumption rationalization in a way that enhances environmental sustainability, improve the quality of lighting elements and towers for less maintenance and cost, and finally highlights the importance of the city’s landmarks and sites including those related to the Prophet and his journey.”

Life after sunset doesn’t stop

“The social and economic life becomes much better with good lighting that maintains public safety and encourages people to meet in public places and routes in a healthy way,” Howayda Al-Harithy, a Professor of Architecture and Urban Design at the Department of Architecture and Design (ArD) at the American University of Beirut (AUB) told Asharq Al-Awsat.

She said that “the first phase will be short and will focus on the central area, then, we will move to the second, larger phase.” Harithy expected the project “to be unique and pioneering in Saudi Arabia and the region,” noting that “it’s going to be an inclusive study project that benefits from high-end technologies and represents a new model for all the Saudi regions and cities.”

As an engineer and architect, Harithy stressed that lighting plays a major role in building and empowering the spatial memory, mainly in cities, and called for benefitting from “advanced technology whether alternative energy resources or smart lighting systems that control the power and colors of the light as well as energy distribution.”

Befitting from global expertise

Professor Howayda Al-Harithy revealed that the MMDA has been assessing lighting models from several countries and cities around the world, and has contacted MIT Professor Carlo Ratti specializing in city lighting and manager of many successful projects in Italy and the United States to benefit from his large expertise in this field and his MIT-based lab in Cambridge.

It’s worth mentioning that the Madinah Regional Municipality had already renewed the lighting systems several times in the city of 1.2 million inhabitants, by restoring lights on streets and neighborhoods using LED technology in order to rationalize electric consumption, avoid carbon emissions, and unify visual identity.



Rocket Re-entry Pollution Measured in Atmosphere for 1st Time

A SpaceX Falcon 9 rocket with the company's Dragon spacecraft on top launches from Space Launch Complex 40 for the Crew-12 mission at Cape Canaveral Space Force Station in Florida on February 13, 2026. (Photo by Jim WATSON / AFP)
A SpaceX Falcon 9 rocket with the company's Dragon spacecraft on top launches from Space Launch Complex 40 for the Crew-12 mission at Cape Canaveral Space Force Station in Florida on February 13, 2026. (Photo by Jim WATSON / AFP)
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Rocket Re-entry Pollution Measured in Atmosphere for 1st Time

A SpaceX Falcon 9 rocket with the company's Dragon spacecraft on top launches from Space Launch Complex 40 for the Crew-12 mission at Cape Canaveral Space Force Station in Florida on February 13, 2026. (Photo by Jim WATSON / AFP)
A SpaceX Falcon 9 rocket with the company's Dragon spacecraft on top launches from Space Launch Complex 40 for the Crew-12 mission at Cape Canaveral Space Force Station in Florida on February 13, 2026. (Photo by Jim WATSON / AFP)

When part of a SpaceX rocket re-entered Earth's atmosphere exactly a year ago, it created a spectacular fireball that streaked across Europe's skies, delighting stargazers and sending a team of scientists rushing towards their instruments.

The German team managed to measure the pollution the rocket's upper stage emitted in our planet's difficult-to-study upper atmosphere -- the first time this has been achieved, according to a study published on Thursday.

It is vital to learn more about this little-understood form of pollution because of the huge number of satellites that are planned to be launched in the coming years, the scientists emphasized.

In the early hours of February 19, 2025, the upper stage of a Falcon 9 rocket was tumbling back to Earth when it exploded into a fireball that made headlines from the UK to Poland.

"We were excited to try and test our equipment and hopefully measure the debris trail," the team led by Robin Wing and Gerd Baumgarten of the Leibniz Institute of Atmospheric Physics in Germany told AFP via email.

In particular, the scientists wanted to measure how the rocket polluted what they call the "ignorosphere" -- because it is so difficult to study.

This region between 50 to 100 kilometers (31 to 62 miles) above Earth includes the mesosphere and part of the lower thermosphere.

- 'Harbinger' -

The team used technology called LIDAR, which measures pollution in the atmosphere by shooting out lots of laser pulses and seeing which bounce back off something.

They detected a sudden spike in the metal lithium in an area nearly 100 kilometers above Earth. This plume had 10 times more lithium than is normal in this part of the atmosphere.

The team then traced the plume back to where the rocket re-entered the atmosphere, west of Ireland.

For the first time, this proves it is possible to study pollution from re-entering rockets at such heights before it disperses, the scientists said.

But the impact from this rocket pollution remains unknown.

"What we do know is that one ton of emissions at 75 kilometers (altitude) is equivalent to 100,000 tons at the surface," they said.

The study warned the case was a "harbinger" of the pollution to come, given how many rockets will be needed to launch all the satellites that Earth is planning to blast into space.

Currently, there are around 14,000 active satellites orbiting our planet.
In the middle of last month, China applied for permission to launch around 200,000 satellites into orbit.

Then at the end of January, billionaire Elon Musk's SpaceX applied for permission to launch one million more.

Eloise Marais, a professor of atmospheric chemistry at University College London not involved in the new study, told AFP the research was "really important".

"There is currently no suitable regulation targeting pollution input into the upper layers of the atmosphere," she explained.

"Even though these portions of the atmosphere are far from us, they have potentially consequential impacts to life on Earth if the pollutants produced are able to affect Earth's climate and deplete ozone in the layer protecting us from harmful UV radiation."

The study was published in the journal Communications Earth & Environment.


Deep-sea Fish Break the Mold with Novel Visual System

A close-up showing the shiny silver-green photophores (light organs) on the lower head of the deep-sea fish Maurolicus muelleri from the Red Sea, seen in this photograph released on February 11, 2026. Dr. Wen-Sung Chung/Handout via REUTERS
A close-up showing the shiny silver-green photophores (light organs) on the lower head of the deep-sea fish Maurolicus muelleri from the Red Sea, seen in this photograph released on February 11, 2026. Dr. Wen-Sung Chung/Handout via REUTERS
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Deep-sea Fish Break the Mold with Novel Visual System

A close-up showing the shiny silver-green photophores (light organs) on the lower head of the deep-sea fish Maurolicus muelleri from the Red Sea, seen in this photograph released on February 11, 2026. Dr. Wen-Sung Chung/Handout via REUTERS
A close-up showing the shiny silver-green photophores (light organs) on the lower head of the deep-sea fish Maurolicus muelleri from the Red Sea, seen in this photograph released on February 11, 2026. Dr. Wen-Sung Chung/Handout via REUTERS

For more than a century, biology textbooks have stated that vision among vertebrates - people included - is built from two clearly defined cell types: rods for processing dim light and cones for bright light and color. New research involving deep-sea fish shows this tidy division is, in reality, not so tidy.

Scientists have identified a new type of visual cell in deep-sea fish that blends the shape and form of rods with the molecular machinery and genes of cones. This hybrid type of cell, adapted for sight in gloomy light conditions, was found in larvae of three deep-sea fish species in the Red Sea, Reuters reported.

The species studied were: a hatchetfish, with the scientific name Maurolicus mucronatus; a lightfish, named Vinciguerria mabahiss; and a lanternfish, named Benthosema pterotum. The hatchetfish retained the hybrid cells throughout its life. The other two shifted to the usual rod-cone dichotomy in adulthood.

All three are small, with adults measuring roughly 1-3 inches (3-7 cm) long and the larvae much littler. They inhabit a marine realm of twilight conditions, with sunlight struggling to penetrate into the watery depths.

The vertebrate retina, a sensory membrane at the back of the eye that detects light and converts it into signals to the brain, possesses two main types of light-sensitive visual cells, called photoreceptors. They are named for their shape: rods and cones.

"The rods and cones slowly change position inside the retina when moving between dim and bright conditions, which is why our eyes take time to adjust when we flick on the light switch on our way to the restroom at night," said Lily Fogg, a postdoctoral researcher in marine biology at the University of Helsinki in Finland and lead author of the research published in the journal Science Advances.

"We found that, as larvae, these deep-sea fish mostly use a mix-and-match type of hybrid photoreceptor. These cells look like rods - long, cylindrical and optimized to catch as many light particles - photons - as possible. But they use the molecular machinery of cones, switching on genes usually found only in cones," Fogg said.

The researchers examined the retinas of fish larvae caught at depths from 65 to 650 feet (20 to 200 meters). In the type of dim environment they inhabit, rod and cone cells both are usually engaged in the vertebrate retina, but neither works very well. These fish display an evolutionary remedy.

"Our results challenge the longstanding idea that rods and cones are two fixed, clearly separated cell types. Instead, we show that photoreceptors can blend structural and molecular features in unexpected ways. This suggests that vertebrate visual systems are more flexible and evolutionarily adaptable than previously thought," Fogg said.

"It is a very cool finding that shows that biology does not fit neatly into boxes," said study senior author Fabio Cortesi, a marine biologist and neuroscientist at the University of Queensland in Australia. "I wouldn't be surprised if we find these cells are much more common across all vertebrates, including terrestrial species."

All three species emit bioluminescence using small light-emitting organs on their bodies, mostly located on the belly. They produce blue-green light that blends with the faint background light from the sun above. This strategy, called counterillumination, is a common form of camouflage in the deep sea to avoid predators.

"Small fish like these fuel the open ocean. They are plentiful and serve as food for many larger predatory fishes, including tuna and marlin, marine mammals such as dolphins and whales, and marine birds," Cortesi said.

These kinds of fish also engage in one of the biggest daily migrations in the animal kingdom. They swim near the surface at night to feed in plankton-rich waters, then return to the depths - 650 to 3,280 feet (200 to 1,000 meters) - during daytime to avoid predation.

"The deep sea remains a frontier for human exploration, a mystery box with the potential for significant discoveries," Cortesi said. "We should look after this habitat with the utmost care to make sure future generations can continue to marvel at its wonders."


Japan City Gets $3.6 Mn Donation in Gold to Fix Water System

FILE PHOTO: Factories line the port of Osaka, western Japan October 23, 2017. REUTERS/Thomas White/File Photo
FILE PHOTO: Factories line the port of Osaka, western Japan October 23, 2017. REUTERS/Thomas White/File Photo
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Japan City Gets $3.6 Mn Donation in Gold to Fix Water System

FILE PHOTO: Factories line the port of Osaka, western Japan October 23, 2017. REUTERS/Thomas White/File Photo
FILE PHOTO: Factories line the port of Osaka, western Japan October 23, 2017. REUTERS/Thomas White/File Photo

Osaka has received an unusual donation -- 21 kilograms of gold -- to pay for the maintenance of its ageing water system, the Japanese commercial hub announced Thursday.

The donation worth $3.6 million was made in November by a person who a month earlier had already given $3,300 in cash for the municipal waterworks, Osaka Mayor Hideyuki Yokoyama told a press conference.

"It's an absolutely staggering amount," said Yokoyama, adding that he was lost for words to express his gratitude.

"I was shocked."

The donor wished to remain anonymous, AFP quoted the mayor as saying.

Work to replace water pipes in Osaka, a city of 2.8 million residents, has hit a snag as the actual cost exceeded the planned budget, according to local media.