Scientists have calculated the age of a star dune for the first time, solving a mystery in Earth’s geological record.
The dunes, so-called because they look like stars from above, with arms that spread out in several directions from a central peak, are found in deserts across the world, including in the UAE.
They are also found elsewhere in the solar system – on Mars and on Saturn’s moon Titan.
However, they have rarely been described in records, despite having featured in past deserts preserved in rocks deep underground.
The study by Aberystwyth University, Birkbeck and University College London academics is the first to date how long it took a star dune to form and examine its internal structure.
Using a technique that dates the last time minerals in the sand were exposed to sunlight, they determined that the Lala Lallia dune in south-east Morocco formed 13,000 years ago.
The research suggests the dune reached its 100-metre height and 700-metre width due to rapid growth in the past 1,000 years as it shifted slowly to the west.
Prof Geoff Duller, from the department of geography and Earth sciences at Aberystwyth University, which was involved in the study, said the research finally solves the case of the “missing sand dune”.
He told The National: “One of the odd things is, today, if you look around the world, including in the UAE in the Liwa [Empty Quarter] desert, there are some fabulous star dunes. They are quite common.
“But when you look in the geological record – and these deserts produce some fabulous geology that’s really important for water, aquifers, for gas and oil storage – we can only find a record of one place where someone has described a star dune.
“I think part of it is no one really knew what to look for.”
Prof Duller said it is only because of new technology – and a process called luminescence dating – that scientists can now start to uncover their secrets.
“These findings will probably surprise a lot of people as we can see how quickly this enormous dune formed, and that it is moving across the desert at about 50cm a year. These fantastic star dunes are one of the natural wonders of the world.”
Believed to be the tallest dunes on Earth – with one in the Badain Jaran Desert in China reaching 300 metres – star dunes are widespread in most deserts, including in Africa, the Middle East, China and North America.
On the Arabian peninsular, they are common in the Empty Quarter, also known as the Rub Al Khali, which covers an area of about 660,000 square km.
The Empty Quarter, a vast sand sea is the largest continuous sand desert on Earth, stretching from southeastern Saudi Arabia, where it occupies a quarter of the country’s land mass, with lesser portions in Yemen, Oman and the UAE.
To form, they need a lot of sand and opposing winds.
Lala Lallia sits in the Erg Chebbi area of the Sahara, close to the border with Algeria, an area featured in TV series such as SAS Rogue Heroes and blockbuster films such as The Mummy and Sahara.
Prof Charlie Bristow of Birkbeck and UCL added: “Using ground penetrating radar to look inside this star dune has allowed us to show how these immense dunes form, and to develop a new model so geologists know better what to look for in the rock record to identify these amazing desert features.”
Their research suggests the star dune formed at around the same time as the Younger Dryas event, an abrupt cooling period in Earth’s history.
It also reveals that the dune stopped growing for 8,000 years – possibly due to wetter conditions caused by an enlarged monsoon, suggested by the presence of pottery at the site, that stabilised the dune before the onset of a great drought.
The study used luminescence dating techniques developed at Aberystwyth University to discover the last time minerals in the sand were exposed to sunlight to determine their age.
“It’s quite a privilege to think that the luminescence dating techniques developed here in Aberystwyth are unlocking some of the secrets of the most challenging climates in the world,” said Prof Duller.
“They are giving us an insight into geology that could have wider implications, including geological deposits that are used for water resources and storing carbon.”
UAE v Gibraltar
What: International friendly
When: 7pm kick off
Where: Rugby Park, Dubai Sports City
Admission: Free
Online: The match will be broadcast live on Dubai Exiles’ Facebook page
UAE squad: Lucas Waddington (Dubai Exiles), Gio Fourie (Exiles), Craig Nutt (Abu Dhabi Harlequins), Phil Brady (Harlequins), Daniel Perry (Dubai Hurricanes), Esekaia Dranibota (Harlequins), Matt Mills (Exiles), Jaen Botes (Exiles), Kristian Stinson (Exiles), Murray Reason (Abu Dhabi Saracens), Dave Knight (Hurricanes), Ross Samson (Jebel Ali Dragons), DuRandt Gerber (Exiles), Saki Naisau (Dragons), Andrew Powell (Hurricanes), Emosi Vacanau (Harlequins), Niko Volavola (Dragons), Matt Richards (Dragons), Luke Stevenson (Harlequins), Josh Ives (Dubai Sports City Eagles), Sean Stevens (Saracens), Thinus Steyn (Exiles)
PROFILE OF STARZPLAY
Date started: 2014
Founders: Maaz Sheikh, Danny Bates
Based: Dubai, UAE
Sector: Entertainment/Streaming Video On Demand
Number of employees: 125
Investors/Investment amount: $125 million. Major investors include Starz/Lionsgate, State Street, SEQ and Delta Partners
The candidates
Dr Ayham Ammora, scientist and business executive
Ali Azeem, business leader
Tony Booth, professor of education
Lord Browne, former BP chief executive
Dr Mohamed El-Erian, economist
Professor Wyn Evans, astrophysicist
Dr Mark Mann, scientist
Gina MIller, anti-Brexit campaigner
Lord Smith, former Cabinet minister
Sandi Toksvig, broadcaster
F1 The Movie
Starring: Brad Pitt, Damson Idris, Kerry Condon, Javier Bardem
Director: Joseph Kosinski
Rating: 4/5
Score
Third Test, Day 2
New Zealand 274
Pakistan 139-3 (61 ov)
Pakistan trail by 135 runs with 7 wickets remaining in the innings
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More coverage from the Future Forum
UAE currency: the story behind the money in your pockets
Conflict, drought, famine
Estimates of the number of deaths caused by the famine range from 400,000 to 1 million, according to a document prepared for the UK House of Lords in 2024.
It has been claimed that the policies of the Ethiopian government, which took control after deposing Emperor Haile Selassie in a military-led revolution in 1974, contributed to the scale of the famine.
Dr Miriam Bradley, senior lecturer in humanitarian studies at the University of Manchester, has argued that, by the early 1980s, “several government policies combined to cause, rather than prevent, a famine which lasted from 1983 to 1985. Mengistu’s government imposed Stalinist-model agricultural policies involving forced collectivisation and villagisation [relocation of communities into planned villages].
The West became aware of the catastrophe through a series of BBC News reports by journalist Michael Buerk in October 1984 describing a “biblical famine” and containing graphic images of thousands of people, including children, facing starvation.
Band Aid
Bob Geldof, singer with the Irish rock group The Boomtown Rats, formed Band Aid in response to the horrific images shown in the news broadcasts.
With Midge Ure of the band Ultravox, he wrote the hit charity single Do They Know it’s Christmas in December 1984, featuring a string of high-profile musicians.
Following the single’s success, the idea to stage a rock concert evolved.
Live Aid was a series of simultaneous concerts that took place at Wembley Stadium in London, John F Kennedy Stadium in Philadelphia, the US, and at various other venues across the world.
The combined event was broadcast to an estimated worldwide audience of 1.5 billion.
COMPANY%20PROFILE
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Racecard
%3Cp%3E6pm%3A%20The%20Madjani%20Stakes%20%E2%80%93%20Group%202%20(PA)%20Dh97%2C500%20(Dirt)%201%2C900m%3Cbr%3E6.35pm%3A%20Graduate%20Stakes%20%E2%80%93%20Conditions%20(TB)%20Dh100%2C000%20(D)%201%2C400m%3Cbr%3E7.10pm%3A%20Longines%20Dolcevita%20Collection%20%E2%80%93%20Maiden%20(TB)%20Dh82%2C500%20(D)%201%2C400m%3Cbr%3E7.45pm%3A%20Longines%20Legend%20Driver%20Collection%20%E2%80%93%20Maiden%20(TB)%20Dh82%2C500%20(D)%201%2C600m%3Cbr%3E8.20pm%3A%20Longines%20Master%20Collection%20%E2%80%93%20Handicap%20(TB)%20Dh105%2C000%20(D)%201%2C200m%3Cbr%3E8.55pm%3A%20Longines%20Record%20Collection%20%E2%80%93%20Handicap%20(TB)%20Dh87%2C500%20(D)%202%2C200m%3Cbr%3E9.30pm%3A%20Longines%20Spirit%20Collection%20%E2%80%93%20Handicap%20(TB)%20Dh87%2C500%20(D)%201%2C600m%3C%2Fp%3E%0A
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COMPANY%20PROFILE
%3Cp%3E%3Cstrong%3EName%3A%3C%2Fstrong%3E%20Floward%0D%3Cbr%3E%3Cstrong%3EBased%3A%20%3C%2Fstrong%3ERiyadh%2C%20Saudi%20Arabia%0D%3Cbr%3E%3Cstrong%3EFounders%3A%20%3C%2Fstrong%3EAbdulaziz%20Al%20Loughani%20and%20Mohamed%20Al%20Arifi%0D%3Cbr%3E%3Cstrong%3ESector%3A%20%3C%2Fstrong%3EE-commerce%0D%3Cbr%3E%3Cstrong%3ETotal%20funding%3A%20%3C%2Fstrong%3EAbout%20%24200%20million%0D%3Cbr%3E%3Cstrong%3EInvestors%3A%20%3C%2Fstrong%3EAljazira%20Capital%2C%20Rainwater%20Partners%2C%20STV%20and%20Impact46%0D%3Cbr%3E%3Cstrong%3ENumber%20of%20employees%3A%20%3C%2Fstrong%3E1%2C200%3C%2Fp%3E%0A
Labour dispute
The insured employee may still file an ILOE claim even if a labour dispute is ongoing post termination, but the insurer may suspend or reject payment, until the courts resolve the dispute, especially if the reason for termination is contested. The outcome of the labour court proceedings can directly affect eligibility.
- Abdullah Ishnaneh, Partner, BSA Law
THE BIO
Favourite car: Koenigsegg Agera RS or Renault Trezor concept car.
Favourite book: I Am Pilgrim by Terry Hayes or Red Notice by Bill Browder.
Biggest inspiration: My husband Nik. He really got me through a lot with his positivity.
Favourite holiday destination: Being at home in Australia, as I travel all over the world for work. It’s great to just hang out with my husband and family.
Skewed figures
In the village of Mevagissey in southwest England the housing stock has doubled in the last century while the number of residents is half the historic high. The village's Neighbourhood Development Plan states that 26% of homes are holiday retreats. Prices are high, averaging around £300,000, £50,000 more than the Cornish average of £250,000. The local average wage is £15,458.
Specs
Engine: 51.5kW electric motor
Range: 400km
Power: 134bhp
Torque: 175Nm
Price: From Dh98,800
Available: Now
If you go
The flights
There are direct flights from Dubai to Sofia with FlyDubai (www.flydubai.com) and Wizz Air (www.wizzair.com), from Dh1,164 and Dh822 return including taxes, respectively.
The trip
Plovdiv is 150km from Sofia, with an hourly bus service taking around 2 hours and costing $16 (Dh58). The Rhodopes can be reached from Sofia in between 2-4hours.
The trip was organised by Bulguides (www.bulguides.com), which organises guided trips throughout Bulgaria. Guiding, accommodation, food and transfers from Plovdiv to the mountains and back costs around 170 USD for a four-day, three-night trip.
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ESSENTIALS
The flights
Emirates flies from Dubai to Phnom Penh via Yangon from Dh2,700 return including taxes. Cambodia Bayon Airlines and Cambodia Angkor Air offer return flights from Phnom Penh to Siem Reap from Dh250 return including taxes. The flight takes about 45 minutes.
The hotels
Rooms at the Raffles Le Royal in Phnom Penh cost from $225 (Dh826) per night including taxes. Rooms at the Grand Hotel d'Angkor cost from $261 (Dh960) per night including taxes.
The tours
A cyclo architecture tour of Phnom Penh costs from $20 (Dh75) per person for about three hours, with Khmer Architecture Tours. Tailor-made tours of all of Cambodia, or sites like Angkor alone, can be arranged by About Asia Travel. Emirates Holidays also offers packages.
Specs
Engine: Duel electric motors
Power: 659hp
Torque: 1075Nm
On sale: Available for pre-order now
Price: On request
Mountain%20Boy
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UAE currency: the story behind the money in your pockets
Jordan cabinet changes
In
- Raed Mozafar Abu Al Saoud, Minister of Water and Irrigation
- Dr Bassam Samir Al Talhouni, Minister of Justice
- Majd Mohamed Shoueikeh, State Minister of Development of Foundation Performance
- Azmi Mahmud Mohafaza, Minister of Education and Minister of Higher Education and Scientific Research
- Falah Abdalla Al Ammoush, Minister of Public Works and Housing
- Basma Moussa Ishakat, Minister of Social Development
- Dr Ghazi Monawar Al Zein, Minister of Health
- Ibrahim Sobhi Alshahahede, Minister of Agriculture and Minister of Environment
- Dr Mohamed Suleiman Aburamman, Minister of Culture and Minister of Youth
Out
- Dr Adel Issa Al Tawissi, Minister of High Education and Scientific Research
- Hala Noaman “Basiso Lattouf”, Minister of Social Development
- Dr Mahmud Yassin Al Sheyab, Minister of Health
- Yahya Moussa Kasbi, Minister of Public Works and Housing
- Nayef Hamidi Al Fayez, Minister of Environment
- Majd Mohamed Shoueika, Minister of Public Sector Development
- Khalid Moussa Al Huneifat, Minister of Agriculture
- Dr Awad Abu Jarad Al Mushakiba, Minister of Justice
- Mounir Moussa Ouwais, Minister of Water and Agriculture
- Dr Azmi Mahmud Mohafaza, Minister of Education
- Mokarram Mustafa Al Kaysi, Minister of Youth
- Basma Mohamed Al Nousour, Minister of Culture
Tips%20for%20holiday%20homeowners
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Our family matters legal consultant
Name: Hassan Mohsen Elhais
Position: legal consultant with Al Rowaad Advocates and Legal Consultants.
Tips to stay safe during hot weather
- Stay hydrated: Drink plenty of fluids, especially water. Avoid alcohol and caffeine, which can increase dehydration.
- Seek cool environments: Use air conditioning, fans, or visit community spaces with climate control.
- Limit outdoor activities: Avoid strenuous activity during peak heat. If outside, seek shade and wear a wide-brimmed hat.
- Dress appropriately: Wear lightweight, loose and light-coloured clothing to facilitate heat loss.
- Check on vulnerable people: Regularly check in on elderly neighbours, young children and those with health conditions.
- Home adaptations: Use blinds or curtains to block sunlight, avoid using ovens or stoves, and ventilate living spaces during cooler hours.
- Recognise heat illness: Learn the signs of heat exhaustion and heat stroke (dizziness, confusion, rapid pulse, nausea), and seek medical attention if symptoms occur.
Email sent to Uber team from chief executive Dara Khosrowshahi
From: Dara
To: Team@
Date: March 25, 2019 at 11:45pm PT
Subj: Accelerating in the Middle East
Five years ago, Uber launched in the Middle East. It was the start of an incredible journey, with millions of riders and drivers finding new ways to move and work in a dynamic region that’s become so important to Uber. Now Pakistan is one of our fastest-growing markets in the world, women are driving with Uber across Saudi Arabia, and we chose Cairo to launch our first Uber Bus product late last year.
Today we are taking the next step in this journey—well, it’s more like a leap, and a big one: in a few minutes, we’ll announce that we’ve agreed to acquire Careem. Importantly, we intend to operate Careem independently, under the leadership of co-founder and current CEO Mudassir Sheikha. I’ve gotten to know both co-founders, Mudassir and Magnus Olsson, and what they have built is truly extraordinary. They are first-class entrepreneurs who share our platform vision and, like us, have launched a wide range of products—from digital payments to food delivery—to serve consumers.
I expect many of you will ask how we arrived at this structure, meaning allowing Careem to maintain an independent brand and operate separately. After careful consideration, we decided that this framework has the advantage of letting us build new products and try new ideas across not one, but two, strong brands, with strong operators within each. Over time, by integrating parts of our networks, we can operate more efficiently, achieve even lower wait times, expand new products like high-capacity vehicles and payments, and quicken the already remarkable pace of innovation in the region.
This acquisition is subject to regulatory approval in various countries, which we don’t expect before Q1 2020. Until then, nothing changes. And since both companies will continue to largely operate separately after the acquisition, very little will change in either teams’ day-to-day operations post-close. Today’s news is a testament to the incredible business our team has worked so hard to build.
It’s a great day for the Middle East, for the region’s thriving tech sector, for Careem, and for Uber.
Uber on,
Dara
The specs
Engine: Four electric motors, one at each wheel
Power: 579hp
Torque: 859Nm
Transmission: Single-speed automatic
Price: From Dh825,900
On sale: Now
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