Why you should be thinking about particulate matter: PART THREE 3️ You won't believe how much air we breathe each year.. its the equivalent of two Olympic-sized swimming pools! This #cleanairday, we'll release a series of short videos filmed earlier this year with Professor Timothy Hinks from University of Oxford. Professor Hinks is the Associate Professor of Respiratory Medicine and he runs the Oxford Special Airway Clinic, helping people with asthma in Oxfordshire. Stay tuned for part four 👀