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Press releases • Jun 13, 2019 07:00 BST
Air pollution is responsible for 550,000 premature deaths a year in Europe – and 7 million worldwide, according to the WHO. Measuring it can be a challenge, however, as the equipment tends to be large and expensive. But soon, this may change, thanks to a small, optical nano-sensor developed at Chalmers University of Technology, Sweden, which can be mounted onto an ordinary streetlight.