Quality attachment for smartphones to tackle pollution (16 images)

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A new simple smartphone attachment gives people live air quality readings and tells them exactly what harmful gases they might be inhaling.

Sprimo is the latest new invention to come out of Silicon Valley and comes at a time when the government is trying to crack down on harmful emissions.

Cities are the areas worst affected and London mayor Sadiq Khan earlier this year declared the capital's 'filthy air' had become a 'health crisis'.

He also slammed...
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