A badge is seen on a special backpack designed to monitor pollution during the COVID-19 lockdown on Clapham Common, London, Britain June 29, 2020. REUTERS/Stuart McDill
LONDON (Reuters) - Alex George walks to work in southeast London with a pack of sensors strapped to his back, one of an army of volunteers gathering data that experts say suggest pollution levels may be bouncing back as coronavirus lockdowns ease.
The accident and emergency medic at Lewisham Hospital carries technology in a customised rucksack that measures levels of nitrogen dioxide (NO2) and other chemical compounds floating around in the inner city streets.
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