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Nine out of ten people worldwide breathe polluted air.
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This causes millions of illnesses and deaths and needs action to be reduced.
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Trees act as air-cleaning machines, improving air quality in many ways.
Clean air is a human right. It’s also a necessary precondition if we are to competently address escalating climate change.
Air pollution does not only damage human health, research shows it is harming rainforest, wildlife and hampering the economy in many ways.
It may be obvious, but trees are vital for improving air quality.
As well as absorbing carbon dioxide, their leaves trap the toxic pollutants nitrogen dioxide1, ozone, and harmful microscopic particles produced by diesel vehicles2, cooking and wood burning.
There are many ways that the air quality influences, and is influenced by, trees and rainforest around the world.
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