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Does a plastic bag really take 1000 years to degrade?

Duration: 03:04

Tim Harford questions the numbers used to promote the government's planned plastic bag charge.

Available since: Fri 20 Sep 2013

This clip is from

More or Less Do free school meals work?

Tim Harford on free school meals, the Formula 1 film Rush, plastic bags and cycling risk.

First broadcast: 20 Sep 2013

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