They described the air as "truly pristine."
Is your city among those with the cleanest air? Or are you living in the most polluted cities?
Air pollution can affect one's happiness level.
Adding some green to the unending grey of the city makes this project worth learning about.
The air pollution has caused vehicular accidents, plane and train cancellations, and health problems among residents.
The ink is aptly named "Air Ink", meaning ink made from air (pollution).
These public transportation vehicles are pretty sick!
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