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Millions of masks distributed to students in ‘gas chamber’ Delhi

Five million masks are being distributed at schools in India’s capital, Delhi, after pollution made the air so toxic officials were forced to declare a public health emergency.

A Supreme Court mandated panel imposed several restrictions in the city and two neighbouring states, as air quality deteriorated to “severe” levels.

Dangerous particulate levels in the air are about 20 times the WHO maximum.

The city’s schools have also been closed until at least next Tuesday.

All construction has been halted for a week and fireworks have been banned. From Monday, the city will introduce a temporary scheme so that only cars with odd or even numbered licence plates can drive on given days, in a bid to cut traffic pollution.

Delhi’s Chief Minister Arvind Kejriwal said Delhi had been turned into a “gas chamber”.

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The masks are being handed out to students and their parents, and Mr Kejriwal has asked people to use them as much as possible.

The levels of tiny particulate matter (known as PM2.5) that enter deep into the lungs are 533 micrograms per cubic metre in the city. The WHO recommends that the PM2.5 levels should not be more than 25 micrograms per cubic metre on average in 24 hours.

How thick is the pollution?

As thick white smog blanketed the city, residents started tweeting pictures of their surroundings.

Photos of German leader Angela Merkel’s official visit showed the obscuring effect of the smog at the presidential palace – though both leaders ignored the declared public health emergency and declined to wear masks.

Indian Prime Minister Narendra Modi (L) and Chancellor of Germany Angela Merkel (R) talk at Rashtrapati Bhavan, India"s presidential palace in New Delhi, India, 01 November 2019
Image captionThe German and Indian leaders met at India’s presidential palace amid the smog

Some workers were being told to work from home to avoid the pollution. One account director at market research firm Kantar, which employs several hundred people in the city, told Reuters staff had been told not to come in on Monday.

Many local residents are furious that the situation remains the same year after year.

“I didn’t realise how bad it would get,” one resident said. “Do we really want our kids to grow up in such an environment? No one really cares, no one wants to improve the situation.”

The hashtags #DelhiAirQuality and #FightAgainstDelhiPollition are trending on Twitter.

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The thick smog also raised concerns for the weekend’s cricket clash between India and Bangladesh. A 2017 match in similar polluted conditions led to Sri Lankan players vomiting on the pitch.

But Bangladesh’s coach said that despite “scratchy eyes” and sore throats among his players, the game would go ahead.

Bangladesh cricket team head coach Russell Domingo (R) and bowling coach Daniel Vettori wearing face masks watch the team during a practice session at Arun Jaitley Cricket Stadium in New Delhi on November 1, 2019,
Image captionRussell Domingo (R) wore a mask to training, but said his players would get on with it

“No-one is dying,” he told the Press Trust of India.

“Look, there’s a bit of pollution in Bangladesh as well, so it’s a not a massive shock unlike some other countries. The players have just got on with the game and haven’t complained too much about it,” he said.

Why is the pollution so bad?

One of the main reasons for air quality in the city worsening every year in November and December is that farmers in the neighbouring states of Punjab and Haryana burn crop stubble to clear their fields. It’s made worse by the fireworks during the Hindu festival of Diwali.

There are other reasons too, including construction dust, factory and vehicular emissions, but farm fires remain the biggest culprit.

Media captionA hair-raising drive through the Delhi smog

More than two million farmers burn 23 million tonnes of crop residue on some 80,000 sq km of farmland in northern India every winter.

The stubble smoke is a lethal cocktail of particulate matter, carbon dioxide, nitrogen dioxide and sulphur dioxide.

Using satellite data, Harvard University researchers estimated that nearly half of Delhi’s air pollution between 2012 and 2016 was due to stubble burning.

The burning is so widespread that it even shows up in satellite photos from Nasa.


What are PM 2.5 particles?

Infographic
  • Particulate matter, or PM, 2.5 is a type of pollution involving fine particles less than 2.5 microns (0.0025mm) in diameter
  • A second type, PM 10, is of coarser particles with a diameter of up to 10 microns
  • Some occur naturally – e.g. from dust storms and forest fires, others from human industrial processes
  • They often consist of fragments that are small enough to reach the lungs or, in the smallest cases, to cross into the bloodstream as well
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