Every year the world produces 400 million tonnes of plastic – the same weight as all the humans on earth.

Only a small proportion of this is recycled, and this isn’t proper recycling but “downcycling” – the new plastic is of a lower quality, meaning that almost all plastic eventually goes to waste.

But now French company Carbios is using enzymes to break plastic down into its chemical building blocks – which can then be used to make high quality plastic again.

So is plastic on the brink of becoming a resource like glass or aluminium, that you can keep on moulding and recycling again and again?

Presenter: Myra AnubiReporter/producer: William KremerSeries producer: Jon BithreySound mix: Gareth JonesEditor: Penny Murphy

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