Today's best photos: From volcano eruption in Iceland to carnival in Macedonia

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.

George Sainsbury of the supermarket dynasty, sugar magnate William Park Lyle and actress Dame Gracie Fields were residents in the 1930s when the street was only known as ‘Millionaires’ Row’.
Then came the international super rich, including the last king of Greece, Constantine II, the Sultan of Brunei and Indian steel magnate Lakshmi Mittal who was at one point ranked the third richest person in the world.
Turkish tycoon Halis Torprak sold his mansion for £50m in 2008 after spending just two days there. The House of Saud sold 10 properties on the road in 2013 for almost £80m.
Other residents have included Iraqi businessman Nemir Kirdar, singer Ariana Grande, holiday camp impresario Sir Billy Butlin, businessman Asil Nadir, Paul McCartney’s former wife Heather Mills.

Land was originally the Bishop of London's hunting park, hence the name
The road was laid out in the mid 19th Century, meandering through woodland and farmland
Its earliest houses at the turn of the 20th Century were substantial detached properties with extensive grounds

The National picks the most striking images from around the world