Can technology clean up our air? An atmospheric scientist got a glimpse of the future

By Alastair Lewis, Professor of Atmospheric Chemistry at the National Centre for Atmospheric Science and University of York, University of York

Every few years I visit CES (formerly the Consumer Electronics Show) in Las Vegas, a goliath event that is equal parts shameless spin and publicity, trade show and business conference. I’m an atmospheric scientist, and I want to get some insight into the technologies that might reduce our personal emissions in future.

In 2018, there was an explosion in interest in air-quality sensors alongside products aimed at cleaning air in the home. I wondered back then whether air filtration would gain traction in Europe and whether…

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