Air quality standards

The Environmental Protection Agency in the US is tightening air quality standards in an effort to help improve public health. It is lowering the amount of smog-forming ground-level ozone permitted in the atmosphere for the first time in more than 10 years. The EPA says the change could save 4,000 lives each year.


However, scientists and health campaigners say the changes have not gone far enough. Unlike stratospheric ozone, which forms a protective layer high above Earth’s surface, ground-level ozone can harm people’s lungs and aggravate conditions such as asthma, as well as increase susceptibility to respiratory infections.

One last question, is Los Angeles closing down with Tokyo to follow?

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