Carry on breathing
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Boy uses backpack to map pollution hotspots

Scientists at the University of Leicester are trialling a portable air monitor to gather precise data at a personal scale.

Schoolboy Logan Eddy has been helping the study by carrying the device in a specially adapted backpack.

The results have changed his friends' habits.


So I Can Breathe

A week of coverage by BBC News looking at ways to cut air pollution.

Go to next video: How bad is air pollution for us?