The best available evidence suggests that microplastics and nanoplastics do not pose a widespread risk to humans or the environment, except in small pockets. But that evidence is limited, and the situation could change if pollution continues at the current rate.
This is the verdict of SAPEA’s Evidence Review Report on micro- and nanoplastic pollution, published in January 2019. The report is written by a group of world-leading experts nominated by academies across Europe, and informs the Scientific Opinion from the European Commission’s Group of Chief Scientific Advisors.
What the report says
The report comprehensively examines the best available evidence from the natural sciences and computer modelling, as well as social, political and behavioural sciences. Its key conclusions are:
- Microplastics — tiny particles under 5mm in length — are already present across air, soil and sediment, freshwaters, seas and oceans, plants and animals, and in several components of the human diet.
- These particles come from a variety of sources, including plastic products, textiles, fisheries, agriculture, industry and general waste.
- In controlled experiments, high concentrations of these particles have been shown to cause physical harm to the environment and living creatures, including inducing inflammation and stress.
- However, the concentration levels measured in many real-world locations are well below this threshold — though there are also limitations in the measurement methods currently available.
- Meanwhile, in other parts of the environment, there is no reliable evidence about the levels or effects of these particles. This is true especially of nanoplastics, which are very difficult to measure and evaluate.
Debate and impact
As SAPEA’s work on microplastics is published and disseminated throughout 2019 and beyond, its impact on the microplastics debate will be recorded here.
Events for researchersPublic eventsMedia coverageDebate on Twitter
SAPEA’s work on microplastics will be presented and discussed at a range of events for researchers and academics in 2019.
SAPEA’s work on microplastics will be presented and discussed at a range of events for the general public in 2019. Details will be published here.
As details of media coverage become available, they will be published here.