Two topics dominated the Sunday Panel this week: porn and plastic.

Earlier today, the Prime Minister's chief science adviser Professor Juliet Gerrard has released the Rethinking Plastics in Aotearoa New Zealand report today.

Jacinda Ardern says the next step will be to move away from products made of hard-to-recycle PVC and polystyrene.

That includes polystyrene meat trays, cups and takeaway food containers.

There's also a plan to stimulate innovation and development of solutions to the soft plastic problem, and work with local government on better kerbside collection of recyclables.

Earlier this week, the Classification Office released analysis of the 200 videos most watched by Kiwis on Pornhub.

It found 46 per cent featured step-porn or step-fantasy, involving sexual activity between blended family members.

More than a third of the videos contained non-consensual behaviour.

Lorna Subritzky and Jo McCarroll joined Andrew Dickens to discuss these and other topics. 

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