Generating ozone and negative ions in the air can be done by a corona discharge. For this we can use a sharp tip of negative polarity, acting against a flat metal part of positive or neutral potential ...

[Advanced Tinkering] needed a source of fresh ozone for some future chemistry related projects, and since buying an off-the-shelf unit would be, well, just plain boring, it was obvious what to do ...

Earth's ozone layer, an early symbol of global environmental degradation, is improving and on track to recover by the middle of the 21st century. Over the past 30 years, humans have successfully ...