At the first edition of Dezeen Day, held in London in 2019, organizers set the agenda for the global design community and tackling key topics including circular design, new materials and education. Watch this panel on the subject of post-plastics, in which designers Arthur Mamou-Mani, Natsai Audrey Chieza and Nienke Hoogvliet argue whether the world still needs plastic and how it could transition to a post-plastic future by relying more on circular process or through smart alternatives such as bioplastics.