Tokyo (AFP) Jan 17, 2022

Persistently high levels of ozone pollution in Asia are costing China, Japan and South Korea an estimated $63 billion annually in lost rice, wheat and maize crops, a new study says.

While ozone forms a protective layer around the Earth in the upper atmosphere, it is a harmful pollutant at ground level.

It is created by a chemical reaction when two pollutants, often emitted by cars or ind
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