Traffic pollution can impair human brain function after few hours of exposure, a study has shown.
Just two hours of exposure to common levels of traffic pollution can cause a decrease in the brain's functional connectivity, researchers at two Canadian universities found.
The study by teams at the University of British Columbia and University of Victoria, published the study in the Environmental Health journal, gives the first evidence of altered brain activity induced by air pollution in humans.
Senior study author Dr Chris Carlsten, an environmental lung disease specialist, said: “For many decades, scientists thought the brain may be protected from the harmful effects of air pollution.
“This study, which is the first of its kind in the world, provides fresh evidence supporting a connection between air pollution and cognition.”
Researchers briefly exposed 25 healthy adults to diesel exhaust and filtered air in a laboratory setting. Brain activity was measured before and after each exposure using functional magnetic resonance imaging.
Changes seen in the brain’s default mode network (DMN) — a set of interconnected brain regions used for memory and internal thought — showed participants had decreased functional connectivity in widespread regions of the network after exposure to diesel exhaust, compared with filtered air.
Top 10 most-polluted countries — in pictures
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1 Nepal. Annual mean concentrations should not exceed 10 micrograms per cubic metre and Nepal had 99.73 micrograms. EPA -

2 Niger — 94.05 micrograms per cubic metre. AFP -

3 India — 90.87 micrograms per cubic metre. AFP -

4 Saudi Arabia — 87.95 micrograms per cubic metre. Reuters -

5 Egypt — 87.00 micrograms per cubic metre. EPA -

6 Cameroon — 72.79 micrograms per cubic metre. AFP -

7 Nigeria — 71.80 micrograms per cubic metre. AFP -

8 Bahrain — 70.82 micrograms per cubic metre. Getty -

9 Chad — 66.03 micrograms per cubic metre. Bloomberg -

10 Iraq — 61.64 micrograms per cubic metre. AFP
The changes were found to be temporary, with participants' brains returning to normal after the exposure.
But Dr Carlsten said the effects could be long-lasting with longer exposure.
He warned drivers to take steps to limit their exposure to traffic pollution.
“People may want to think twice the next time they're stuck in traffic with the windows rolled down,” said Dr Carlsten.
“It's important to ensure that your car's air filter is in good working order, and if you're walking or biking down a busy street, consider diverting to a less busy route.”
Study author Dr Jodie Gawryluk, a psychology professor at the University of Victoria, said: “We know that altered functional connectivity in the DMN has been associated with reduced cognitive performance and symptoms of depression, so it's concerning to see traffic pollution interrupting these same networks.
“While more research is needed to fully understand the functional impacts of these changes, it's possible that they may impair people's thinking or ability to work.”
Avatar: Fire and Ash
Director: James Cameron
Starring: Sam Worthington, Sigourney Weaver, Zoe Saldana
Rating: 4.5/5
Company Profile
Company name: Big Farm Brothers
Started: September 2020
Founders: Vishal Mahajan and Navneet Kaur
Based: Dubai Investment Park 1
Industry: food and agriculture
Initial investment: $205,000
Current staff: eight to 10
Future plan: to expand to other GCC markets
Primera Liga fixtures (all times UAE: 4 GMT)
Friday
Real Sociedad v Villarreal (10.15pm)
Real Betis v Celta Vigo (midnight)
Saturday
Alaves v Barcelona (8.15pm)
Levante v Deportivo La Coruna (10.15pm)
Girona v Malaga (10.15pm)
Las Palmas v Atletico Madrid (12.15am)
Sunday
Espanyol v Leganes (8.15pm)
Eibar v Athletic Bilbao (8.15pm)
Getafe v Sevilla (10.15pm)
Real Madrid v Valencia (10.15pm)
Company profile
Name: Thndr
Started: October 2020
Founders: Ahmad Hammouda and Seif Amr
Based: Cairo, Egypt
Sector: FinTech
Initial investment: pre-seed of $800,000
Funding stage: series A; $20 million
Investors: Tiger Global, Beco Capital, Prosus Ventures, Y Combinator, Global Ventures, Abdul Latif Jameel, Endure Capital, 4DX Ventures, Plus VC, Rabacap and MSA Capital
THE DETAILS
Solo: A Star Wars Story
Director: Ron Howard
2/5
School uniforms report
While you're here
Samuel McIlhagga: William Dalrymple on the perils of empire nostalgia
Sholto Byrnes: When viewing colonialism, past feels like foreign country
Shelina Janmohamed: Britain must look forward, not pine for a lost past
OTHER IPL BOWLING RECORDS
Best bowling figures: 6-14 – Sohail Tanvir (for Rajasthan Royals against Chennai Super Kings in 2008)
Best average: 16.36 – Andrew Tye
Best economy rate: 6.53 – Sunil Narine
Best strike-rate: 12.83 – Andrew Tye
Best strike-rate in an innings: 1.50 – Suresh Raina (for Chennai Super Kings against Rajasthan Royals in 2011)
Most runs conceded in an innings: 70 – Basil Thampi (for Sunrisers Hyderabad against Royal Challengers Bangalore in 2018)
Most hat-tricks: 3 – Amit Mishra
Most dot-balls: 1,128 – Harbhajan Singh
Most maiden overs bowled: 14 – Praveen Kumar
Most four-wicket hauls: 6 – Sunil Narine
Desert Warrior
Starring: Anthony Mackie, Aiysha Hart, Ben Kingsley
Director: Rupert Wyatt
Rating: 3/5
WHAT IS A BLACK HOLE?
1. Black holes are objects whose gravity is so strong not even light can escape their pull
2. They can be created when massive stars collapse under their own weight
3. Large black holes can also be formed when smaller ones collide and merge
4. The biggest black holes lurk at the centre of many galaxies, including our own
5. Astronomers believe that when the universe was very young, black holes affected how galaxies formed
JAPAN SQUAD
Goalkeepers: Masaaki Higashiguchi, Shuichi Gonda, Daniel Schmidt
Defenders: Yuto Nagatomo, Tomoaki Makino, Maya Yoshida, Sho Sasaki, Hiroki Sakai, Sei Muroya, Genta Miura, Takehiro Tomiyasu
Midfielders: Toshihiro Aoyama, Genki Haraguchi, Gaku Shibasaki, Wataru Endo, Junya Ito, Shoya Nakajima, Takumi Minamino, Hidemasa Morita, Ritsu Doan
Forwards: Yuya Osako, Takuma Asano, Koya Kitagawa
How to turn your property into a holiday home
- Ensure decoration and styling – and portal photography – quality is high to achieve maximum rates.
- Research equivalent Airbnb homes in your location to ensure competitiveness.
- Post on all relevant platforms to reach the widest audience; whether you let personally or via an agency know your potential guest profile – aiming for the wrong demographic may leave your property empty.
- Factor in costs when working out if holiday letting is beneficial. The annual DCTM fee runs from Dh370 for a one-bedroom flat to Dh1,200. Tourism tax is Dh10-15 per bedroom, per night.
- Check your management company has a physical office, a valid DTCM licence and is licencing your property and paying tourism taxes. For transparency, regularly view your booking calendar.
PSA DUBAI WORLD SERIES FINALS LINE-UP
Men’s:
Mohamed El Shorbagy (EGY)
Ali Farag (EGY)
Simon Rosner (GER)
Tarek Momen (EGY)
Miguel Angel Rodriguez (COL)
Gregory Gaultier (FRA)
Karim Abdel Gawad (EGY)
Nick Matthew (ENG)
Women's:
Nour El Sherbini (EGY)
Raneem El Welily (EGY)
Nour El Tayeb (EGY)
Laura Massaro (ENG)
Joelle King (NZE)
Camille Serme (FRA)
Nouran Gohar (EGY)
Sarah-Jane Perry (ENG)
Match info
Deccan Gladiators 87-8
Asif Khan 25, Dwayne Bravo 2-16
Maratha Arabians 89-2
Chadwick Walton 51 not out
Arabians won the final by eight wickets
While you're here
Thomas Harding: Johnson and Biden on collision course over Northern Ireland
Thomas Harding: Biden victory will rejuvenate America's relations with Europe
Gavin Esler: Can the world continue to trust Britain after move to break law?
Results
1. New Zealand Daniel Meech – Fine (name of horse), Richard Gardner – Calisto, Bruce Goodin - Backatorps Danny V, Samantha McIntosh – Check In. Team total First round: 200.22; Second round: 201.75 – Penalties 12 (jump-off 40.16 seconds) Prize €64,000
2. Ireland Cameron Hanley – Aiyetoro, David Simpson – Keoki, Paul Kennedy – Cartown Danger Mouse, Shane Breen – Laith. Team total 200.25/202.84 – P 12 (jump-off 51.79 – P17) Prize €40,000
3. Italy Luca Maria Moneta – Connery, Luca Coata – Crandessa, Simone Coata – Dardonge, Natale Chiaudani – Almero. Team total 130.82/198.-4 – P20. Prize €32,000
What the law says
Micro-retirement is not a recognised concept or employment status under Federal Decree Law No. 33 of 2021 on the Regulation of Labour Relations (as amended) (UAE Labour Law). As such, it reflects a voluntary work-life balance practice, rather than a recognised legal employment category, according to Dilini Loku, senior associate for law firm Gateley Middle East.
“Some companies may offer formal sabbatical policies or career break programmes; however, beyond such arrangements, there is no automatic right or statutory entitlement to extended breaks,” she explains.
“Any leave taken beyond statutory entitlements, such as annual leave, is typically regarded as unpaid leave in accordance with Article 33 of the UAE Labour Law. While employees may legally take unpaid leave, such requests are subject to the employer’s discretion and require approval.”
If an employee resigns to pursue micro-retirement, the employment contract is terminated, and the employer is under no legal obligation to rehire the employee in the future unless specific contractual agreements are in place (such as return-to-work arrangements), which are generally uncommon, Ms Loku adds.
Mercer, the investment consulting arm of US services company Marsh & McLennan, expects its wealth division to at least double its assets under management (AUM) in the Middle East as wealth in the region continues to grow despite economic headwinds, a company official said.
Mercer Wealth, which globally has $160 billion in AUM, plans to boost its AUM in the region to $2-$3bn in the next 2-3 years from the present $1bn, said Yasir AbuShaban, a Dubai-based principal with Mercer Wealth.
“Within the next two to three years, we are looking at reaching $2 to $3 billion as a conservative estimate and we do see an opportunity to do so,” said Mr AbuShaban.
Mercer does not directly make investments, but allocates clients’ money they have discretion to, to professional asset managers. They also provide advice to clients.
“We have buying power. We can negotiate on their (client’s) behalf with asset managers to provide them lower fees than they otherwise would have to get on their own,” he added.
Mercer Wealth’s clients include sovereign wealth funds, family offices, and insurance companies among others.
From its office in Dubai, Mercer also looks after Africa, India and Turkey, where they also see opportunity for growth.
Wealth creation in Middle East and Africa (MEA) grew 8.5 per cent to $8.1 trillion last year from $7.5tn in 2015, higher than last year’s global average of 6 per cent and the second-highest growth in a region after Asia-Pacific which grew 9.9 per cent, according to consultancy Boston Consulting Group (BCG). In the region, where wealth grew just 1.9 per cent in 2015 compared with 2014, a pickup in oil prices has helped in wealth generation.
BCG is forecasting MEA wealth will rise to $12tn by 2021, growing at an annual average of 8 per cent.
Drivers of wealth generation in the region will be split evenly between new wealth creation and growth of performance of existing assets, according to BCG.
Another general trend in the region is clients’ looking for a comprehensive approach to investing, according to Mr AbuShaban.
“Institutional investors or some of the families are seeing a slowdown in the available capital they have to invest and in that sense they are looking at optimizing the way they manage their portfolios and making sure they are not investing haphazardly and different parts of their investment are working together,” said Mr AbuShaban.
Some clients also have a higher appetite for risk, given the low interest-rate environment that does not provide enough yield for some institutional investors. These clients are keen to invest in illiquid assets, such as private equity and infrastructure.
“What we have seen is a desire for higher returns in what has been a low-return environment specifically in various fixed income or bonds,” he said.
“In this environment, we have seen a de facto increase in the risk that clients are taking in things like illiquid investments, private equity investments, infrastructure and private debt, those kind of investments were higher illiquidity results in incrementally higher returns.”
The Abu Dhabi Investment Authority, one of the largest sovereign wealth funds, said in its 2016 report that has gradually increased its exposure in direct private equity and private credit transactions, mainly in Asian markets and especially in China and India. The authority’s private equity department focused on structured equities owing to “their defensive characteristics.”
The burning issue
The internal combustion engine is facing a watershed moment – major manufacturer Volvo is to stop producing petroleum-powered vehicles by 2021 and countries in Europe, including the UK, have vowed to ban their sale before 2040. The National takes a look at the story of one of the most successful technologies of the last 100 years and how it has impacted life in the UAE.
Read part four: an affection for classic cars lives on
Read part three: the age of the electric vehicle begins
Read part two: how climate change drove the race for an alternative
RESULT
Manchester United 2 Burnley 2
Man United: Lingard (53', 90' 1)
Burnley: Barnes (3'), Defour (36')
Man of the Match: Jesse Lingard (Manchester United)
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THE 12 BREAKAWAY CLUBS
England
Arsenal, Chelsea, Liverpool, Manchester City, Manchester United, Tottenham Hotspur
Italy
AC Milan, Inter Milan, Juventus
Spain
Atletico Madrid, Barcelona, Real Madrid
THE SPECS
BMW X7 xDrive 50i
Engine: 4.4-litre V8
Transmission: Eight-speed Steptronic transmission
Power: 462hp
Torque: 650Nm
Price: Dh600,000
Company profile
Date started: December 24, 2018
Founders: Omer Gurel, chief executive and co-founder and Edebali Sener, co-founder and chief technology officer
Based: Dubai Media City
Number of employees: 42 (34 in Dubai and a tech team of eight in Ankara, Turkey)
Sector: ConsumerTech and FinTech
Cashflow: Almost $1 million a year
Funding: Series A funding of $2.5m with Series B plans for May 2020
Who's who in Yemen conflict
Houthis: Iran-backed rebels who occupy Sanaa and run unrecognised government
Yemeni government: Exiled government in Aden led by eight-member Presidential Leadership Council
Southern Transitional Council: Faction in Yemeni government that seeks autonomy for the south
Habrish 'rebels': Tribal-backed forces feuding with STC over control of oil in government territory
WOMAN AND CHILD
Director: Saeed Roustaee
Starring: Parinaz Izadyar, Payman Maadi
Rating: 4/5
THE SPECS
Engine: 1.5-litre turbocharged four-cylinder
Transmission: Constant Variable (CVT)
Power: 141bhp
Torque: 250Nm
Price: Dh64,500
On sale: Now
Selected fixtures
All times UAE
Wednesday
Poland v Portugal 10.45pm
Russia v Sweden 10.45pm
Friday
Belgium v Switzerland 10.45pm
Croatia v England 10.45pm
Saturday
Netherlands v Germany 10.45pm
Rep of Ireland v Denmark 10.45pm
Sunday
Poland v Italy 10.45pm
Monday
Spain v England 10.45pm
Tuesday
France v Germany 10.45pm
Rep of Ireland v Wales 10.45pm
White hydrogen: Naturally occurring hydrogen
Chromite: Hard, metallic mineral containing iron oxide and chromium oxide
Ultramafic rocks: Dark-coloured rocks rich in magnesium or iron with very low silica content
Ophiolite: A section of the earth’s crust, which is oceanic in nature that has since been uplifted and exposed on land
Olivine: A commonly occurring magnesium iron silicate mineral that derives its name for its olive-green yellow-green colour
The National's picks
4.35pm: Tilal Al Khalediah
5.10pm: Continous
5.45pm: Raging Torrent
6.20pm: West Acre
7pm: Flood Zone
7.40pm: Straight No Chaser
8.15pm: Romantic Warrior
8.50pm: Calandogan
9.30pm: Forever Young
Ticket prices
General admission Dh295 (under-three free)
Buy a four-person Family & Friends ticket and pay for only three tickets, so the fourth family member is free
Buy tickets at: wbworldabudhabi.com/en/tickets
While you're here
Bryant Harris: What Joe Biden did during his first week as US President
Kareem Shaheen: Omar Alghabra outshines the racists who malign him
Kareem Shaheen: Canada is failing those who bear its greatest Covid-19 burdens
Godzilla%20x%20Kong%3A%20The%20New%20Empire
On Women's Day
Dr Nawal Al-Hosany: Why more women should be on the frontlines of climate action
Shelina Janmohamed: Why shouldn't a spouse be compensated fairly for housework?
Samar Elmnhrawy: How companies in the Middle East can catch up on gender equality
Justin Thomas: Challenge the notion that 'men are from Mars, women are from Venus'
Springsteen: Deliver Me from Nowhere
Director: Scott Cooper
Starring: Jeremy Allen White, Odessa Young, Jeremy Strong
Rating: 4/5
MATCH INFO
Europa League semi-final, second leg
Atletico Madrid (1) v Arsenal (1)
Where: Wanda Metropolitano
When: Thursday, kick-off 10.45pm
Live: On BeIN Sports HD
THE%20SPECS
In-demand jobs and monthly salaries
- Technology expert in robotics and automation: Dh20,000 to Dh40,000
- Energy engineer: Dh25,000 to Dh30,000
- Production engineer: Dh30,000 to Dh40,000
- Data-driven supply chain management professional: Dh30,000 to Dh50,000
- HR leader: Dh40,000 to Dh60,000
- Engineering leader: Dh30,000 to Dh55,000
- Project manager: Dh55,000 to Dh65,000
- Senior reservoir engineer: Dh40,000 to Dh55,000
- Senior drilling engineer: Dh38,000 to Dh46,000
- Senior process engineer: Dh28,000 to Dh38,000
- Senior maintenance engineer: Dh22,000 to Dh34,000
- Field engineer: Dh6,500 to Dh7,500
- Field supervisor: Dh9,000 to Dh12,000
- Field operator: Dh5,000 to Dh7,000
Turning%20waste%20into%20fuel
'Fantastic Beasts: The Secrets of Dumbledore'
Rating: 3/5
Directed by: David Yates
Starring: Mads Mikkelson, Eddie Redmayne, Ezra Miller, Jude Law
FINAL SCORES
Fujairah 130 for 8 in 20 overs
(Sandy Sandeep 29, Hamdan Tahir 26 no, Umair Ali 2-15)
Sharjah 131 for 8 in 19.3 overs
(Kashif Daud 51, Umair Ali 20, Rohan Mustafa 2-17, Sabir Rao 2-26)
The specs
Engine: 4.0-litre V8 twin-turbocharged and three electric motors
Power: Combined output 920hp
Torque: 730Nm at 4,000-7,000rpm
Transmission: 8-speed dual-clutch automatic
Fuel consumption: 11.2L/100km
On sale: Now, deliveries expected later in 2025
Price: expected to start at Dh1,432,000
How it works
A $10 hand-powered LED light and battery bank
Device is operated by hand cranking it at any time during the day or night
The charge is stored inside a battery
The ratio is that for every minute you crank, it provides 10 minutes light on the brightest mode
A full hand wound charge is of 16.5minutes
This gives 1.1 hours of light on high mode or 2.5 hours of light on low mode
When more light is needed, it can be recharged by winding again
The larger version costs between $18-20 and generates more than 15 hours of light with a 45-minute charge
No limit on how many times you can charge
On Women's Day
Dr Nawal Al-Hosany: Why more women should be on the frontlines of climate action
Shelina Janmohamed: Why shouldn't a spouse be compensated fairly for housework?
Justin Thomas: Challenge the notion that 'men are from Mars, women are from Venus'
The National Editorial: Is there much to celebrate on International Women's Day 2021?
Where to apply
Applicants should send their completed applications - CV, covering letter, sample(s) of your work, letter of recommendation - to Nick March, Assistant Editor in Chief at The National and UAE programme administrator for the Rosalynn Carter Fellowships for Mental Health Journalism, by 5pm on April 30, 2020.
Please send applications to nmarch@thenational.ae and please mark the subject line as “Rosalynn Carter Fellowship for Mental Health Journalism (UAE programme application)”.
The local advisory board will consider all applications and will interview a short list of candidates in Abu Dhabi in June 2020. Successful candidates will be informed before July 30, 2020.
Timeline
2012-2015
The company offers payments/bribes to win key contracts in the Middle East
May 2017
The UK SFO officially opens investigation into Petrofac’s use of agents, corruption, and potential bribery to secure contracts
September 2021
Petrofac pleads guilty to seven counts of failing to prevent bribery under the UK Bribery Act
October 2021
Court fines Petrofac £77 million for bribery. Former executive receives a two-year suspended sentence
December 2024
Petrofac enters into comprehensive restructuring to strengthen the financial position of the group
May 2025
The High Court of England and Wales approves the company’s restructuring plan
July 2025
The Court of Appeal issues a judgment challenging parts of the restructuring plan
August 2025
Petrofac issues a business update to execute the restructuring and confirms it will appeal the Court of Appeal decision
October 2025
Petrofac loses a major TenneT offshore wind contract worth €13 billion. Holding company files for administration in the UK. Petrofac delisted from the London Stock Exchange
November 2025
180 Petrofac employees laid off in the UAE
EA Sports FC 26
Publisher: EA Sports
Consoles: PC, PlayStation 4/5, Xbox Series X/S
Rating: 3/5
Keane on …
Liverpool’s Uefa Champions League bid: “They’re great. With the attacking force they have, for me, they’re certainly one of the favourites. You look at the teams left in it - they’re capable of scoring against anybody at any given time. Defensively they’ve been good, so I don’t see any reason why they couldn’t go on and win it.”
Mohamed Salah’s debut campaign at Anfield: “Unbelievable. He’s been phenomenal. You can name the front three, but for him on a personal level, he’s been unreal. He’s been great to watch and hopefully he can continue now until the end of the season - which I’m sure he will, because he’s been in fine form. He’s been incredible this season.”
Zlatan Ibrahimovic’s instant impact at former club LA Galaxy: “Brilliant. It’s been a great start for him and for the club. They were crying out for another big name there. They were lacking that, for the prestige of LA Galaxy. And now they have one of the finest stars. I hope they can go win something this year.”
'Doctor Strange in the Multiverse Of Madness'
Director: Sam Raimi
Cast: Benedict Cumberbatch, Elizabeth Olsen, Chiwetel Ejiofor, Benedict Wong, Xochitl Gomez, Michael Stuhlbarg and Rachel McAdams
Rating: 3/5
Score
Third Test, Day 1
New Zealand 229-7 (90 ov)
Pakistan
New Zealand won the toss and elected to bat
BEETLEJUICE BEETLEJUICE
Starring: Winona Ryder, Michael Keaton, Jenny Ortega
Director: Tim Burton
Rating: 3/5
Pakistan T20 series squad
Sarfraz Ahmed (captain), Fakhar Zaman, Ahmed Shahzad, Babar Azam, Shoaib Malik, Mohammed Hafeez, Imad Wasim, Shadab Khan, Mohammed Nawaz, Faheem Ashraf, Hasan Ali, Amir Yamin, Mohammed Amir (subject to fitness clearance), Rumman Raees, Usman Shinwari, Umar Amin
Tamkeen's offering
- Option 1: 70% in year 1, 50% in year 2, 30% in year 3
- Option 2: 50% across three years
- Option 3: 30% across five years
Mohammed bin Zayed Majlis
The specs: 2018 GMC Terrain
Price, base / as tested: Dh94,600 / Dh159,700
Engine: 2.0-litre turbocharged four-cylinder
Power: 252hp @ 5,500rpm
Torque: 353Nm @ 2,500rpm
Transmission: Nine-speed automatic
Fuel consumption, combined: 7.4L / 100km
Why seagrass matters
- Carbon sink: Seagrass sequesters carbon up to 35X faster than tropical rainforests
- Marine nursery: Crucial habitat for juvenile fish, crustations, and invertebrates
- Biodiversity: Support species like sea turtles, dugongs, and seabirds
- Coastal protection: Reduce erosion and improve water quality

