The sudden and unprecedented drop in human activity during lockdown, gave scientists a unique opportunity to study the planet, and climate change.
Despite the clear and quiet skies, research I was involved in found that lockdown actually had a slight warming effect in spring 2020: as industry ground to a halt, air pollution dropped and so did the ability of aerosols, tiny particles produced by the burning of fossil fuels, to cool the planet by reflecting sunlight away from the Earth. The impa...
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