The Ozone hole. What is it and is it getting bigger or smaller, or what?

Rebecca Smith What is ozone? Ozone (O3) is a molecule made up of three oxygen atoms1. The atmosphere contains around 3 billion metric tonnes of ozone, equating to 0.00006% of the total atmospheric mass and it is formed as a result of O2, the molecular type of oxygen we breath, being split into individual atoms... Continue Reading →

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