Supramolecular polymers are class of materials that are formed by non-covalent interactions such as hydrogen bonding, π-π interactions, electrostatic interactions and the hydrophobic effect.

In November 2020 former dean Rick Lawson, professor of European Human Rights Law, was elected member of the Management Board of the EU Fundamental Rights Agency in Vienna. He was nominated by the Dutch Government following an open selection procedure.

Globalsmog Seminar Series #7 Morocco

The New Jersey Chapter of the international Institute for Operations Research and the Management Sciences

On 4 July, Jorrit Rijpma participated in a roundtable event hosted by the European Policy Centre (EPC) in Brussels.

On 17 September 2018 Rijpma, Associate Professor of European Law at the Europa Institute, spoke at the European Academy for European Law’s annual conference on EU border management.

More efficient use of phosphorus fertilisers would make it possible to meet food demand in 2050, without using more of the world’s land for agriculture. This is what environmental scientists José Mogollón and colleagues have discovered by working out various future scenarios for food production and…

CML grants three Stans Awards each year, known as the best PhD paper, best student thesis and best outreach from the past year. The CML staff nominated students and colleagues and this year’s jury Helias Udo De Haes and Gjalt Huppes made the final decision.

Almost 100 billion tons of CO₂ could be pulled out of the atmosphere by the end of the century. That is, if high-income countries switch to a plant-based diet. The double carbon profit of returning farmland to its natural state would equal about 14 years’ worth of agricultural emissions, researchers…

A new executive board has been installed at NeCEN, a state-of-the art facility that offers the most advanced cryo-electron microscopes worldwide. The new board members are full of excitement: what are their ideas for the future of the facility?

Decision makers are faced with dilemmas as result of the corona crisis. Dr. Jeroen Wolbers, Assistant Professor Crisis Governance at the Crisis Research Center explains the existing dilemmas and what makes the corona crisis unique when compared to other crises.

The directorate of the Netherlands Research School for Astronomy (NOVA) has two new members. Ronald Stark (currently at NWO) will be the new Executive Director of NOVA from 1 September. Amina Helmi (Professor of Dynamics, structure and formation of the Milky Way at the University of Groningen) will…

Wout Broekema highlights how organisations not only learn from crises but also forget, losing crucial knowledge and practices over time.

In this article Jeroen Wolbers and Sanneke Kuipers take a closer look at disaster preparedness to reinvigorate the academic debate.

Social aspects of the learning environment, also called classroom climate, are important for students’ cognitive and affective learning outcomes. In this thesis the classroom climate is operationalised by means of two components: the teacher-class relationship and classroom discipline.

How do authorities and citizens construct meaning in the aftermath of jihadist terrorist attacks through the use of frames, rituals, and symbols. What does this reveal about the communicative impact of terrorism?

A plant-based diet could improve the resilience of our food system. Moving to such a diet in the European Union (EU) and United Kingdom (UK) alone could replace almost all the production losses from Russia and Ukraine. That’s what an international team of researchers conclude in Nature Food. Leiden…

Promotor: H.J. van den Herik, B.R. Katzy, Co-promotor: K. Sailer

Pim Overgaauw is at his best when he can support others. His new position as Institute Manager of the Mathematical Institute is therefore a perfect fit. ‘My main goal is to ensure that our mathematicians can focus on the maths.’

On 20 June 2025, Melanie Fink presented her research on ‘Robo Swarms and Polygraphs: The Future of European Border Management and its Human Costs’ at the Research Workshop on ‘Migration law at the intersection of international, EU and domestic law: institutional structures and the protection of human…

Het National Ocean Decade Committee heeft twee nieuwe leden benoemd van de Universiteit Leiden. Hilde Woker en Renate Reitsma zullen zich als leden van dit comité inzetten om het het belang van oceaanwetenschappen te promoten.

For the first time, Leiden University has made it to the top 10 of the UI Green Metric, a global sustainability ranking for universities. Of the 780 participating universities, Leiden has taken seventh place.

Numismatic research of Roman coin hoards in the Netherlands. The use of numismatic sources is incorporated in Claes’s research project “Dialogues of Power”. This project aims to analyse the legitimising dialogue between Roman emperors and their Germanic legions during the so-called “crisis of the third…

Huub de Groot is professor in Biophysical Organic Chemistry. With his team he works in the field of photosynthesis and artificial photosynthesis. The molecular basis for photosynthesis is formed by protein complexes and organelles that contain chlorophyll molecules. The antenna systems herein capture…

This project is funded by the Dutch Cancer Society. The project will be part of an ongoing research line aimed at identifying mechanisms of cancer therapy resistance and metastasis. In this project, it will be investigated how the Grainyhead family of transcription factors controls therapy response…

When do we define a piece of nature in the city as a park? And when is something a tree or shrub? It may seem obvious, but in scientific literature the definitions vary quite a bit. That makes comparisons difficult. Environmental scientist Joeri Morpurgo looked at the differences and designed a general…

To what extent are there differences between countries in and outside the European Union and the Schengen area in the level of crimmigration, the merger between migration control and crime control, and to what extent can these differences be explained by the way in which state and non-state actors in…

What determines healthy behavior and how do you promote healthy choices and routines? These are a few questions currently being addressed by Marieke Adriaanse, recently appointed Professor of Behavioral Intervention in Population Health Management at the Leiden University Medical Center (LUMC).

Europe is expected to experience a greater frequency of severe floods. Paul Hudson discusses the challenges of flood management The Conversation.

Past, Present and Future of Nubian Communities in Sudan

Frans de Haas started his work at the MI with a clear mandate. Listening and talking are what he will mainly be doing ‘My role is to make sure that everyone feels comfortable in the new situation.’

On 5 October, mediator Johan Remkes presented his report on the nitrogen crisis and what he thinks is the best way forward. Leiden University professor and nitrogen expert Jan Willem Erisman responds to Remkes’s recommendations. ‘It’s a step in the right direction.’

The first generation of Governance of Sustainability master's students has graduated. They received their diplomas during a festive ceremony at Wijnhaven on 17 September. And they will not be the last: The master's programme is only growing in popularity. ‘We are very proud of our first graduates, especially…

The Dutch Ministry of Infrastructure and Water Management is refusing to release documents on the safety of Schiphol Airport, despite a court ruling that they must be made public. The case has been running for four years and was brought by current affairs programme EenVandaag.

Cora van Nieuwenhuizen (VVD) has resigned as Minister of Infrastructure and Water Management with immediate effect. She has decided to take up a position outside politics and will become chair of the lobby organisation for the energy sector, Energie Nederland.

On Monday, June 24th, 24 employees of the Ministry of Infrastructure and Water Management (IenW) received their certificates for completing Data Science courses, offered by the Leiden Centre of Data Science.

Climate change, depletion of natural resources, loss of natural and cultural landscapes, and many other (ecological) sustainability challenges urge us to (re)evaluate human interaction with the natural world. This renewed environmental consciousness has invigorated not only scientists working on effects…

This study examines how European state administrations responded to transboundary crises over the past 30 years and the extent of their successful adaptation.

The aim of this research is to understand the linking of crises for the combination of climate change and the COVID-19 pandemic.

This research aims to investigate how different social forces interact with hydropolitics in the Eastern Nile Basin and what are the constraints of engagement.

While bioinformatics methods deal with the analysis of sequence information (be it proteins or DNA), the field of cheminformatics is concerned with the analysis of small-molecule datasets.

Multicopper oxidase, laccase, can efficiently reduce oxygen to water and are mostly used in the enzymatic biofuel cells.

In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.

This thesis takes steps toward understanding the interaction between gas-phase and solid-state molecules in star- and planet-forming regions.

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Promotores: A.P. IJzerman, H.W.T. van Vlijmen

Can furan-based resisn be degraded by microbial enzymes in combination with mild pre-treatment?

Sustainability, health and wellbeing are key factors during the coming renovation of the iconic South Cluster of the Humanities Campus. The conversion of the original seven ‘houses’ to create a single spacious, light and attractive environment under a glass roof will earn an Excellent Level qualification…