(Micro)plastic vervuiling – Wat weten wij en wat doen wij ermee? One Planetary Health Symposium: Microplastics – Impact op gezondheid en innovatieve oplossingen, Koningszaal, ARTIS Groote Museum, Amsterdam  21 nov 2024

Current environmental plastic and associated chemicals research and paths forward CITE keynote, P-LEACH Stakeholder Workshop, Helmholtz UFZ, Leipzig 22 Oct 2024

A Scientist’s Thoughts on ArtScience Arts & Science Workshop, Open University Utrecht, 14 March 2024

Zijn wij een beetje plastic?  Presentation of ZonMw Kennisagenda to Dutch State Secretary and ZonMw, Zoom, 11 Jan 2021

Microplastics Science-Policy Speech. European Parliament, Marine litter policy meeting, Brussels, 3 May 2017

Microplastics Science-Policy Speech. High-level European Commission Conference on Rethinking Plastics, Brussels, 26 Sept 2017

Microplastic pollution in the environment.  Stakeholder workshop, European Chemicals Agency, Helsinki, 30 May 2018

What are the effects of micro-plastics on human health? Plastic Justice Project, Zoom, 8 Feb 2021

Plastics the Environment and Us.  Dalhousie Sustainability Lecture Series. Halifax, Canada, 2 Feb 2017

What if there’s plastic in our blood? Plastic Health Summit, Amsterdam, 3 Oct 2019

Hoe gaan we uiteindelijk ten onder aan plastic? Universiteit van Nederland (internet platform for top scientists), Nov 2018

Here be dragons: Exploring the terra incognita of microplastic pollution. Netherlands Academy of Technology & Innovation, Amsterdam, 2019

Our technoexuberant relationship with plastic. Vrije Wereld Lecture Series, Amsterdam, 2019

Cleaning our seas and oceans through enhanced ocean literacy  European Science Open Forum (ESOF), Manchester UK, 2016

A Felicitous Neo Past (art-science in practice). Art in the Anthropocene Conference, Trinity College Dublin, June 2019

How plastic are we? Geestdrift Festival Utrecht 2019

Een schone zee begint op land: circulaire economie VNO-NCW (Netherlands Industry and Employers Federation), Annual meeting, Delft, 24 May 2016

Latest research in plastic in the marine environment EU DG-ENV Conference on Plastic Waste, Brussels, 2013

Plastic in wastewater – what does that mean?  Waternet, Amsterdam, 2018

Can we design our plastic-pollution free future?  Design workshop, MU Gallery, Eindhoven, 17 Feb 2018

Measuring microplastics in the ocean (and beyond): the what, the why & the how.  Sustainable Chemistry Symposium, UvA, Amsterdam, 13 Jun 2018

Microplastics. SCM-9 Internat Symposium on the Separation & Characterization of Natural & Synthetic Macromolecules, 2019

Wat zit er in de plastic soep? Children's lecture, NEMO Science Museum,  Amsterdam, 2015 & 2019

Microplastics Measurements: The what the why and the how. Analytica Conference, Munich, Germany 11 Apr 2018

Thoughts on Transdisciplinarity from the Arena.  SENSE Symposium, Utrecht University, 6 Apr 2018

Lecture series Post Graduate Course Industrial Design, Theme: Environment & Design Royal Academy of Art, The Hague, 2015 and 2016

Plastic soup, plastic bouillon en een visie voor de toekomst interactieve lezing, ‘1000 Dagen Plastic door Bahram Sadeghi’ Avondprogramma, Pakhuis de Zwijger 29 Sept 2016

Getting up to QA/QC speed: an International interlaboratory study on Microplastics.  European Commission JRC, Ispra, Italy, June 2019

Microplastics, the environment and us (A little story about technology biting back).  Environmental Humanities Centre Symposium, Amsterdam, June 2018

An in-depth introduction to plastic in the environment. International PBT Substances Symposium, Harbin, China, 9 Jan 2018

The marine litter problem. Keynote at 4S Small Satellites Systems & Services Symposium, Malta, June 2016