Sensing air pollution
b'To better understand how personal exposure to air pollution can impact an individual\'s health, Katie Haylor met up with Cambridge University chemist Lia Chatzidiakou for a walk around central Cambridge. And to find out how air pollution can be monitored across a whole city, Katie climbed up to the roof of Cambridge University\'s chemistry department with Cambridge University chemist Lekan Popoola.... Like this podcast? Please help us by supporting the Naked Scientists'