Environmental psychologist Dr Wouter Poortinga shares how the 5p plastic bag tax in the UK reduced consumption between 70 and 90 percent almost overnight. He discusses how, with a little bit of prompting, habits can change and how we need a plan to stop wasting take-away coffee cups.

Recorded: 8 February 2017

Interviewer: Steve Grimwade

Producers: Dr Andi Horvath and Chris Hatzis

Audio Engineering: Gavin Nebauer

Editor: Chris Hatzis

Banner image: Claudia Hooper and Lep Beljac