Urban Material Flow Analysis of Plastics: A Case Study for Leiden

Global plastic production increased from 200 million metric tons in 2002, to 359 million metric tons in 2019. It is estimated that plastics in the marine environment weigh more than 150 million metric tons and by 2050 could even outweigh the mass of fish in the ocean. Over half of the world population (55%) nowadays lives in urban areas and...