this post was submitted on 01 Aug 2025
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One thing I was not aware before is ozone. It is not visible and levels become much higher on sunny days, because of photochemical smog. And if you have asthma, for example, you will feel it because accepted quantities are toxic to the lungs.
Also, because the chemicals that catalyze the creation of ozone in the sun, also help to reduce it during the night, ozone levels in the suburbs and in the countryside near cities are often much higher in the morning, than in the city. Not healthy any more to do sports in such mornings.
If there is missing any argument for people in the suburbs why we should reduce cars in cities, this is it: Ozone from air pollution is really bad for their health and for their children.
Remember when not having enough ozone was ruining our climate? It's always something.
Stop spreading disinformation.
We had (and still have) a dangerous man-made ozone deficit in the upper atmosphere of the arctic regions.. It was caused by certain chemicals used in refrigeration, CFCs. We stopped using and producing these chemicals and the stratospheric ozone layer is recovering now.
The stratospheric ozone layer is vital for life on Earth's surface because it shields us from an excess radiation of UV light from the sun. The ozone depletion problem was already so severe that it had effect on wildlife in higher latitudes.
All this about ozone in the stratosphere, a very high layer of the atnosohere.
Ozone in the ground is caused by photochemical smog and is toxic for animals and plants. It is very harmful to our lungs.
Saying these are the same things is plain disinformation.