How serious is air pollution?
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Is air pollution really a public health crisis?

It could lead to a ban on diesel cars, prevent the building of a third runway at Heathrow and will certainly make it more expensive to drive in towns and cities.

Air pollution has been called the "public health crisis of a generation" - but just how serious is the problem?

The BBC's Sunday Politics reporter Mark Lobel reports.

  • 18 Dec 2016
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