NASA | Human Fingerprint on Global Air Quality

Using new, high-resolution global satellite maps of air quality indicators, NASA scientists tracked air pollution trends over the last decade in various regions and 195 cities around the globe. The United States, Europe and Japan have improved air quality thanks to emission control regulations, while China, India and the Middle East, with their fast-growing economies and expanding industry, have seen more air pollution.

Scientist Bryan Duncan and his team examined observations made from 2005 to 2014 by the Ozone Monitoring Instrument aboard NASA's Aura satellite. One of the atmospheric gases the instrument detects is nitrogen dioxide, a yellow-brown gas that is a common emission from cars, power plants and industrial activity. Nitrogen dioxide can quickly transform into ground-level ozone, a major respiratory pollutant in urban smog. Nitrogen dioxide hotspots, used as an indicator of general air quality, occur over most major cities in developed and developing nations.

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[DecoyEx]

Great video NASA, one way to open peoples eyes. Also, it's very good to see that things are actually going quite well. The more people realize what they are doing, the better it will be. Education is the key, and this is perfect example of it.

[Synper]

Thanks for all of your hard work, and thanks even more for making it available for all of us to view, learn from, and use.

[nature_lover]

oky oky ! but why NASA Goddard dosen't talk about massive deforestation make a map about deforestation from 1950 until now for example !! and you will see very very big difference all around the world !!

[TRSCREAM]

No wait next year will be the hottest year... no wait.. last year was the hottest year.. no wait

[theinterceptor]

God dammit. I live right in that huge red area in HK

[debbiemaus]

wonder if this warm weather has anything todo with harp in alaska and the goverments ability to control weather after all our president just went to alaska maybe theres a bigger picture to whats going on than we know

[Raeve_Noir]

What the fuck East Coast. Stop burning coal.

[AlienGrey]

All this bullshit about global warming (ignoring fact, that every planet's climate change and it is a normal thing), yet all you do is create youtube videos. If your really want to help, start creating non-fossil fuels engines! Actually DO something instead of just crying about a thing, that doesn't exists.

[JohannesvanDijkin_costarica]

You are LIARS. The earth is flat, not a globe.