Soon, air pollution could be measured on every street corner
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. The technology is already in use in western Sweden, and researchers and other interested parties hope that the sensor could soon be used in many broad contexts. A collaboration with the University of