Air Pollution: Clearing the Air
Fresh air and sunshine are the
two things that never fail to cheer a despondent soul. But, of late, fresh air
has been so scarce that it has created a huge scare. Anybody who was born in a
time when fresh air was abundant, and ambled a mile up and down the verdant
path, felt the wind blow in his face and lungs swell up with joy, distracted by
a chirp there or a wood sorrel here would understand what we have lost. But it
is not just pleasures of idling and ambling in the benefic Nature that are
being missed. The lament is about the life giver turning foe – threatening to
invade the inside of our systems with insidious intent- to strike at the source
of very Life that it was supposed to support!
Diwali dealt a damaging blow to
environment especially to the Air. After the lights darkness fell as a pall of
fog cocooned the capital city of Delhi. Air Pollution in Delhi surged reducing
visibility to 50 m .Toxic air made people and the government hit
the panic button calling for urgent and immediate action. Air-pollution saw new
high levels of particulate matter finer than 2.5 mm searching to 900 mark. This
was much higher than the permitted safe limit. In fact it was 15 times higher
than the prescribed safety limit. It was seen as an emergency situation and immediately
a set of measures were implemented included closing down of Schools for three days
and shutting down Badarpur power plant for three days.
But Delhi is not alone and Lucknow
followed suit. In fact all major metropolitan cities are grappling with the
problem of surging air pollution .in Lucknow cheer broke out amidst winter
lovers, who mistook smog but soon the cheer gave way to worry and concern for
clean air is the basic right of each Indian.
What is smog? Why is it so dangerous? How does
it materialize out of the thin air? According to Wikipedia the word itself was
coined in the early 20th centuries as a portmanteau of the word smoke and fog
to refer to the smoky fog, it's opacity and odour. The word was intended to refer
to what was sometimes known as P soup fog. It is an air pollutant. It is a cloud causing
low visibility and for it to qualify as smog there should be enough pollution, smoke
and moisture in the air. This kind of visible air-pollution is composed of nitrogen
oxide, sulphur oxides, ozone, smoke or particulates among other things. Human
made smog is derived from road emissions, forest and agriculture fires and
photochemical reactions of these emissions. The smoke and other particulate
matter combine with fog when there is high humidity and low temperatures to
form smog.
Though modern smog as found in
los Angeles according to Wikipedia is a type of air pollutant derived from
vehicular emissions from internal combustion engine is an industrial fumes that
react in atmosphere with sunlight to form secondary pollutants that also
combine with the primary emission to form petrochemical smog. But Delhi's
problems are further complicated and aggravated by the burning of stubble in
the neighbouring areas.
Smog has serious impact on human
health, but ground-level ozone, sulphur dioxide, nitrogen dioxide and carbon
monoxide are especially harmful for senior citizens, children and people with
heart and lung ailments such as emphysema, asthma, and bronchitis. It can inflame
breathing passages, choke lungs, causing shortness of breath, pain on inhaling
deeply, wheezing and coughing. Nose and eyes irritation can be caused leading
to the drying out of the protective membranes of the nose and throat and even
interfere with body’s ability to fight infection, increasing susceptibility to
illness, rendering us vulnerable to death. What would be the harmful effects of
prolonged, early life exposure to smog as air-pollution needs to be studied to
arrive at any estimation of long-term damage to human health and impending
death.
Wisdom lies in learning from
others’ mistakes. China too had faced such apocalyptic air pollution just
before Beijing Olympics.
And again in 2015. There are lessons that we
can learn from China’s approach to the problem.
Treating it as an emergency, it declared war on it. Smog is the enemy. Particulate matter that was
spewed from countless cars, power stations and steel plants. It shut down its
schools, factories and construction sites and stopped half of its cars from
plying on the roads. These measures helped in improving the quality of the air.
But the gains were temporary and the measures ad-hock.
Dr. Jim Zang, professor of global
environmental health at Duke University writes "we have particles that
have a diameter smaller than a virus, human hair is very big compared to these.
The larger ones will be deposited into the lungs – that's the biggest worry.
But recent scientific evidence shows that when the particles are small enough
they go into the bloodstream as well and they can go directly into the brain
too ". In this study he found that even with temporary intervention the
resultant improvement in air Quality percolated to the healthy young adults
having a positive bearing on their cardiovascular and respiratory health
indicators. Economic slowdown complicates the issue of environmental protection
men home, and economist at the Harvard university China projects establishes
relationship between economic slowdown and a negative bearing on air-pollution
control. "It is a complicating efforts to continue to convince people to
put in costly pollution equipment and to think about energy-saving technologies
India too has woken up to the
threat of menacingly high levels of air pollution in its cities. Though it has
not yet dealt a silver bullet to rescue the cities but red alerts have been
raised. Last year Delhi mobilized its resources to implement Odd-Even formula
to keep half its vehicles off roads in the month of January. This year too
schools were closed, power house shut down, public transport buses running on
fossil fuel being replaced by battery operated ones, extension of Metro
services, ban on stubble burning, and recently a ban on manufacturing and
storage of fire crackers. Though the
benefits reaped are only temporary and defy any long term consolidation yet the
red alert is a positive step and is a sign of progress in governments
understanding of how they should react and respond to these extreme conditions
of threat to environment. Extreme situations demand extreme remedies. All stake
holders have to cooperate in the implementation of well thrashed out, long term
policies for the curtailment of surging air pollution seeing its impact on
Human health as well as the health of our planet.
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