Two cities – one in Iran and another in Nigeria – can claim title because WHO measures pollution in two different ways

The new WHO database of worldwide air pollution measures it in two different ways, and as a result two cities – one in Iran and another in
Nigeria – can lay claim to the unenviable title of world’s most polluted city.

It all comes down to which minute particles, or particulate matter (PM), in the air are being measured. These particles are between 2.5 and 10 microns in diameter, roughly 30 times smaller than the width of a human hair.

The coarser PM10s include dust stirred up by cars on roads and the wind, soot from open fires and partially burned carbon from the burning of fossil fuels like coal, oil and wood. The particles are small enough to be inhaled deep into the lungs.
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But the ultra-fine particles known as PM2.5s can only be seen with microscopes and are produced from all kinds of combustion. These are small enough to get from the lungs into the blood supply and are possibly more deadly because they affect the cardiovascular system.

Many cities in developing countries traditionally monitor only PM10s. But increasingly PM2.5 pollution is seen as the best measure of how bad air pollution is for health. Richer countries usually have higher levels of PM 2.5s, while low income countries have higher levels of PM10s. Both, says the WHO, are deadly.

In 2013, two people died of heat exhaustion after a six-hour gridlock on the city’s bridge over the river Niger. Cars and trucks on the main road to Lagos belch fumes from burning low-quality diesel, and the air often stinks of burning waste from rubbish dumps, the smoke from old ships on the river and discharges from the metal workshops...

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How do that affect d price of fuel?....

How do that affect d price of fuel?

This city cities hmmn

Onitsha? How?

See Caption sef:

SHOCKING; This Nigerian City Is The Most Polluted Cities In The World

. If i say that the OP is high on Expired Paracetamol now, you people will say am too harsh.

chikel2000:
Onitsha? How?

Poor governance or lack of.

Op, na wah for you o. Why you no just name the city here. Lubbish. Just means Obiano needs to tackle the problem.

Whats the name of the city naw

RockHard:
Op, na wah for you o. Why you no just name the city here. Lubbish. Just means Obiano needs to tackle the problem.

I heard he is the best Governor in Nigeria

Successive Governments have stolen all the money and invested it in US, EU and UK.

How could it be Onitsha? Is Onitsha more dirtier than Aba?

mazimee:
How could it be Onitsha? Is Onitsha more dirtier than Aba?

Did you read the full article?