CUSP workshop series on Human Risk Assessment of MNPs Three online thematic workshops are taking place in the Spring of 2023. These are the proceedings from the first workshop: 'Regulatory insights and knowledge gaps', which took place on Tuesday, February 7th 2023. As part of CUSP’s aim to investigate and discuss the applicability of existing risk assessment frameworks related to micro- and nanoplastics (MNPs), the CUSP Working Group on Risk Assessment (WG5), together with the CUSP member projects, is delivering a series of online thematic workshops in the Spring of 2023 under the theme “Human Risk assessment of Micro- and Nanoplastics (MNPs)”. This first workshop, organized by WG5 and PlasticHeal, focused on regulatory insights and knowledge gaps. The second workshop within the series will be about risk assessment frameworks on March 14th and will be organized by WG5 and PolyRisk. The third workshop, organized by WG5 and PlasticsFatE, will take place on April 21st and will focus on data and information gaps. If you'd like to know more about our activities, visit https://cusp-research.eu/#nl-sign-up and register to receive updates, connect with us on twitter, and follow us on Linked in.