The Guardian view on microplastics: harmful pollution must be curbed | Editorial

New evidence of particles damaging crops strengthens the case for an international plastics treaty New and concerning findings from environmental scientists about the impact of microplastics on crops and marine algae add to a growing body of evidence about the disruption caused to living systems by plastic pollution. The results, from a team led by Prof Huan Zhong at Nanjing University, China, are not definitive and require corroboration. But analysis showing that plastics could limit photosynth...