How do you look at air pollution0’/++?///’

Question: How do you look at air pollution0'/++?///'
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Asked by Lion11 to Iain on 7 Mar 2016.
- Iain McLellan answered on 7 Mar 2016:
  
  Hi,
  
  I look at air pollution through a bit of equipment that measures contaminants from cars, buses and lorries – it basically counts how much is in the air and sends the data to my computer.

Question: How do you look at air pollution0'/++?///'