11 Before-And-After Comparisons Show The Positive Effect Of Quarantine And How It’s Reducing Pollution

We live in unprecedented times. One-third of the world is under lockdown, air traffic is down, factories have closed, and our lives are p...

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We live in unprecedented times. One-third of the world is under lockdown, air traffic is down, factories have closed, and our lives are paused. But once you open the window and look up, you’ll notice something different. The sky is clearer and the air feels fresh. Don’t worry, it’s not a cabin fever hallucination.

New scientific data shows that there’s a huge global fall in air pollution. Scientists have found out that there’s been a nitrogen dioxide drop by 54% in Paris, and a fall of nearly 50% in Madrid, Milan, and Rome. Meanwhile, NASA has reported a 30% decrease in air pollution over the Northeast US and up to 30% drop in NO2 In China.

The data is one thing, but seeing the transformation with the naked eye is another! Let's have a look at before and after photographs that show how global lockdown has cleared the skylines.

The India Gate War Memorial, New Delhi, India

Los Angeles, California

 

New Delhi, India

The current global drop-off in nitrogen dioxide pollution is one-of-a-kind in recent history. Fei Liu, an air quality researcher at NASA’s Goddard Space Flight Center, has said that “This is the first time I have seen such a dramatic drop-off over such a wide area for a specific event.” The reduction in NO2 pollution was initially detected near Wuhan, from where the coronavirus spread. Soon, it spread across the country and around the world.

Liu recalls a drop in NO2 during the economic recession in 2008 in some countries, but the fall was gradual. A similar reduction was observed around the area of Beijing during the 2008 Olympics, but it was localized around this one city and pollution soon returned to previous levels as the event ended.

 

Milan, Italy

Venice Lagoons

#6 

The Grand Canal, Venice, Italy

Nitrogen dioxide is emitted from industrial processes, power plants, and car engines and is believed to aggravate respiratory illnesses. According to Wired, “while not a greenhouse gas itself, the pollutant originated from the same activities and industrial sectors that that are responsible for a large share of the world’s carbon emissions and that drive global heating.”

For that reason, this unprecedented drop in air pollution offers a glimpse into what effects a potential low-carbon economy would have on the Earth. Paul Monks, professor of air pollution at the University of Leicester, called the current crisis “the largest scale experiment ever seen.” And, in fact, “this might give us some hope from something terrible [...] to see what can be achieved.”

 

North Jakarta, Indonesia

Yamuna River, New Delhi, India

 

Jakarta, Indonesia

Islamabad, Pakistan

#11 

Electricity Pylons, New Delhi, India