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Air quality and data mining

Atmospheric data can show how the Covid-19 lockdowns affected the quality of the air around us. But how are these data collected, and how do we know they are reliable?

This article links to the following topics in the AQA, Edexcel, OCR, WJEC, CCEA, SQA and IB Diploma exam specifications:

■ atmospheric chemistry

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How iridium marked the end of the dinosaurs

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Buffers

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