Today's best photos: From a collapsed bridge in Greece to drones in Ukraine

A fraudulent investment operation where the scammer provides fake reports and generates returns for old investors through money paid by new investors, rather than through ligitimate business activities.

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.

• 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

Director: Mowaffaq Alobaid 

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

Rating: 4/5

Name: Dr Hassan Mohsen Elhais

Position: legal consultant with Al Rowaad Advocates and Legal Consultants.

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

Mina Al Oraibi: Air strike casts a long shadow over the decade ahead

Jack Moore: Why the assassination is such a monumental gamble

Matthew Levitt: Iran retains its ability to launch terror attacks

Hussein Ibish: Trump's order on solid constitutional ground

Simon Waldman: Cautious Israel keeping a low profile

• Americans living abroad file taxes with the Internal Revenue Service, which can cost hundreds of dollars to complete even though about 60 per cent do not owe taxes, according to the Taxpayer Advocate Service
• Those obligations apply to millions of Americans residing overseas – estimates range from 3.9 million to 5.5 million – including so-called "accidental Americans" who are unaware they hold dual citizenship
• The double taxation policy has been a contentious issue for decades, with many overseas Americans feeling that it punishes them for pursuing opportunities abroad
• Unlike most countries, the US follows a citizenship-based taxation system, meaning that Americans must file taxes annually, even if they do not earn any income in the US.

• Canada and Mexico are significant energy suppliers to the US, providing the majority of oil and natural gas imports
• The introduction of tariffs could hinder the US's clean energy initiatives by raising input costs for materials like nickel
• US domestic suppliers might benefit from higher prices, but overall oil consumption is expected to decrease due to elevated costs