Today's best photos: From a campaign rally in Mauritania to Glastonbury Festival

Director: Matty Brown

Stars: Nadine Labaki, Ziad Bakri, Zain Al Rafeea, Riman Al Rafeea

Rating: 2.5/5

Graphene is a single layer of carbon atoms arranged like honeycomb.

It was discovered in 2004, when Russian-born Manchester scientists Andrei Geim and Kostya Novoselov were "playing about" with sticky tape and graphite - the material used as "lead" in pencils.

Placing the tape on the graphite and peeling it, they managed to rip off thin flakes of carbon. In the beginning they got flakes consisting of many layers of graphene. But as they repeated the process many times, the flakes got thinner.

By separating the graphite fragments repeatedly, they managed to create flakes that were just one atom thick. Their experiment had led to graphene being isolated for the very first time.

At the time, many believed it was impossible for such thin crystalline materials to be stable. But examined under a microscope, the material remained stable, and when tested was found to have incredible properties.

It is many times times stronger than steel, yet incredibly lightweight and flexible. It is electrically and thermally conductive but also transparent. The world's first 2D material, it is one million times thinner than the diameter of a single human hair.

But the 'sticky tape' method would not work on an industrial scale. Since then, scientists have been working on manufacturing graphene, to make use of its incredible properties.

In 2010, Geim and Novoselov were awarded the Nobel Prize for Physics. Their discovery meant physicists could study a new class of two-dimensional materials with unique properties. 

Getting there:

Flying to Guyana requires first reaching New York with either Emirates or Etihad, then connecting with JetBlue or Caribbean Air at JFK airport. Prices start from around Dh7,000.

Getting around:

Wildlife Worldwide offers a range of Guyana itineraries, such as its small group tour, the 15-day ‘Ultimate Guyana Nature Experience’ which features Georgetown, the Iwokrama Rainforest (one of the world’s four remaining pristine tropical rainforests left in the world), the Amerindian village of Surama and the Rupununi Savannah, known for its giant anteaters and river otters; wildlifeworldwide.com

Favourite Meal: Chicken Caesar salad

Hobbies: Travelling, going to the gym

Inspiration: Father, who was a captain in the UAE army

Favourite read: Rich Dad Poor Dad by Robert Kiyosaki and Sharon Lechter

Favourite film: The Founder, about the establishment of McDonald's

Engine: 3-litre twin-turbo V6

Power: 400hp

Torque: 475Nm

Transmission: 9-speed automatic

Price: From Dh215,900

On sale: Now

- Marie Curie

- Jimi Hendrix

- Leonardo Di Vinci

- David Bowie

- Paul McCartney

- Albert Einstein

- Jack the Ripper

- Barack Obama

- Helen Keller

- Joan of Arc

Uefa Champions League semi-final, first leg
Bayern Munich v Real Madrid
When: April 25, 10.45pm kick-off (UAE)
Where: Allianz Arena, Munich
Live: BeIN Sports HD
Second leg: May 1, Santiago Bernabeu, Madrid

Name: Hassan Mohsen Elhais

Position: legal consultant with Al Rowaad Advocates and Legal Consultants

Director: Mowaffaq Alobaid 

Stars: Abdulaziz Almadhi, Mohammed Al Akkasi, Ali Al Suhaibani

Rating: 4/5

CAF Champions League semi-finals first-leg fixtures

Tuesday:

Primeiro Agosto (ANG) v Esperance (TUN) (8pm UAE)
Al Ahly (EGY) v Entente Setif (ALG) (11PM)

Second legs:

October 23

Dos

• Wear the right fabric for the right season and occasion 
• Always ask for the dress code if you don’t know
• Wear a white kandura, white ghutra / shemagh (headwear) and black shoes for work 
• Wear 100 per cent cotton under the kandura as most fabrics are polyester

Don’ts 

• Wear hamdania for work, always wear a ghutra and agal 
• Buy a kandura only based on how it feels; ask questions about the fabric and understand what you are buying

National Editorial: Suleimani has been killed, now we must de-escalate

Jack Moore: Why the assassination is such a monumental gamble

Matthew Levitt: Iran retains its ability to launch terror attacks

Damien McElroy: A CEO tasked with spreading Iran's influence

Hussein Ibish: Trump's order on solid constitutional ground

Simon Waldman: Cautious Israel keeping a low profile

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'

One of Basquiat’s paintings, the vibrant Cabra (1981–82), now hangs in Louvre Abu Dhabi temporarily, on loan from the Guggenheim Abu Dhabi. 

The latter museum is not open physically, but has assembled a collection and puts together a series of events called Talking Art, such as this discussion, moderated by writer Chaedria LaBouvier. 

It's something of a Basquiat season in Abu Dhabi at the moment. Last week, The Radiant Child, a documentary on Basquiat was shown at Manarat Al Saadiyat, and tonight (April 18) the Guggenheim Abu Dhabi is throwing the re-creation of a party tonight, of the legendary Canal Zone party thrown in 1979, which epitomised the collaborative scene of the time. It was at Canal Zone that Basquiat met prominent members of the art world and moved from unknown graffiti artist into someone in the spotlight.  

“We’ve invited local resident arists, we’ll have spray cans at the ready,” says curator Maisa Al Qassemi of the Guggenheim Abu Dhabi. 

Guggenheim Abu Dhabi's Canal Zone Remix is at Manarat Al Saadiyat, Thursday April 18, from 8pm. Free entry to all. Basquiat's Cabra is on view at Louvre Abu Dhabi until October

Install an air filter in your home.

Close your windows and turn on the AC.

Shower or bath after being outside.

Wear a face mask.

Stay indoors when conditions are particularly poor.

If driving, turn your engine off when stationary.

BlacKkKlansman

Director: Spike Lee

Starring: John David Washington; Adam Driver 

Five stars

5pm: Maiden (PA) Dh80,000 (Turf) 1,200m. Winner: Majd Al Megirat, Sam Hitchcott (jockey), Ahmed Al Shehhi (trainer)

5.30pm: Handicap (PA) Dh80,000 (T) 1,600m. Winner: Dassan Da, Patrick Cosgrave, Helal Al Alawi

6pm: Abu Dhabi Fillies Classic Prestige (PA) Dh110,000 (T) 1,400m. Winner: Heba Al Wathba, Richard Mullen, Jean de Roualle

6.30pm: Abu Dhabi Colts Classic Prestige (PA) Dh110,000 (T) 1,400m. Winner: Hameem, Adrie de Vries, Abdallah Al Hammadi

7pm: Wathba Stallions Cup Handicap (PA) Dh70,000 (T) 2,200m. Winner: Jawal Al Reef, Richard Mullen, Ahmed Al Mehairbi

Handicap (TB) Dh100,000 (T) 2,200m. Winner: Harbour Spirit, Adrie de Vries, Jaber Ramadhan.

War

Director: Siddharth Anand

Cast: Hrithik Roshan, Tiger Shroff, Ashutosh Rana, Vaani Kapoor

Rating: Two out of five stars 

The Vines - In Miracle Land
Two stars

• Remittance charges will be tackled by blockchain

• UAE's monumental and risky Mars Mission to inspire future generations, says minister

• Could the UAE drive India's economy?

• News has a bright future and the UAE is at the heart of it

• Architecture is over - here's cybertecture

• The National announces Future of News journalism competition

• Round up: Experts share their visions of the world to come

National Editorial: Why is a Muslim Brotherhood-linked app still on Apple and Google Play?

Damien McElroy: Europe's response to Islamist extremism is encouraging but not enough

Con Coughlin: How extremists are using Zoom and other tools to exploit this pandemic

Company name: Suraasa

Started: 2018

Founders: Rishabh Khanna, Ankit Khanna and Sahil Makker

Based: India, UAE and the UK

Industry: EdTech

Initial investment: More than $200,000 in seed funding

UAE coins

Dh5 note

Dh10 note

Dh20 note

• 2018: Formal work begins
• November 2021: First 17 volumes launched 
• November 2022: Additional 19 volumes released
• October 2023: Another 31 volumes released
• November 2024: All 127 volumes completed

• Golden circle - Dh995
• Floor Standing - Dh495
• Lower Bowl Platinum - Dh95
• Lower Bowl premium - Dh795
• Lower Bowl Plus - Dh695
• Lower Bowl Standard- Dh595
• Upper Bowl Premium - Dh395
• Upper Bowl standard - Dh295

UAE coins

Dh5 note

Dh10 note

Dh20 note

Joyce Karam: Chaotic first debate unlikely to swing undecideds

Hussein Ibish: Donald Trump's 3-step plan to cling to power

Sulaiman Hakemy: Make America lose again

Dr Nawal Al-Hosany: Why more women should be on the frontlines of climate action

Samar Elmnhrawy: How companies in the Middle East can catch up on gender equality

The National Editorial: Is there much to celebrate on International Women's Day 2021?

Justin Thomas: Challenge the notion that 'men are from Mars, women are from Venus'

• As per the document, there are six filing options, including choosing to report on a realisation basis and transitional rules for pre-tax period gains or losses. 
• SMEs with revenue below Dh3 million per annum can opt for transitional relief until 2026, treating them as having no taxable income. 
• Larger entities have specific provisions for asset and liability movements, business restructuring, and handling foreign permanent establishments.

How our nine-month-old has made the Canadian winter a little bit warmer for us

Canadians rallying around a targeted Syrian restaurant is telling about attitudes to migrants

Don Cherry and the real issue with being one of 'you people'

National Editorial: World trade has started to look inwards

Callum Patton: ‘Arrival of Asian century’ has eclipsed US

Robin Mills: Importance of China's energy markets clearer