Manila is one of the top five dirtiest cities when it comes to air pollution. Residents have high rates of asthma and air pollution is responsible for about 4,000 deaths a year. The city is trying to tackle the problem with an innovative solution -- paint.
The city has begun using a paint called Boysen KNOxOUT that is able to filter out nitrogen oxides from the air. The chemical within the paint reacts with sunlight and water vapor making it absorb NOx at a rate of about 20 percent.
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