The challenge is considerable, but so is the satisfaction when it succeeds: creating complex sugar molecules that play a role in biology.

How do students start asking more questions on a museum visit? Let them free an Egyptian princess from a sarcophagus! In the minor Living Education Lab, students from TU Delft, Leiden University and Erasmus University Rotterdam designed an escaperoom.

Psychologist Hilmar Zech found that overweight people are actually more attracted to food pictures after eating than before. He did so using an old research method that he revamped for use on smartphones. Zech will defend his PhD on 30 April.

Roman philosopher and orator Marcus Tullius Cicero is still used as an intellectual example by politicians and speech writers today. But, he did not go unchallenged in his own day, as a statesman in particular. Classicist Leanne Jansen conducted research into how classical historians judged Cicero’s…

As a bachelor student of Bio-Pharmaceutical Sciences, Femke Vlaswinkel wrote a research proposal she was allowed to carry out in her master’s BPS. Femke subsequently graduated with honors. Her research was published in the journal Scientific Reports, she won an award from the Dutch Pharmacy Society…

Yung Lin’s research explores how citizens in Taiwan and Southeast Asia actively shape public diplomacy, build trust across cultures, and address identity-based conflicts, highlighting the shift from government-led to citizen-centred diplomacy.

How do organs work in the body, and how can we create mini-organs to study diseases and test new medicines? That’s the idea behind organ-on-a-chip technology. During his PhD, Flavio Bonanini worked on developing the best possible mini-livers. ‘Make them as simple as possible, and as complex as neede…

A professor from Leiden University has subjected various colleagues to intimidating and unacceptable behaviour for a longer period. These are the findings of an investigation carried out by the University’s independent Complaints Committee for Unacceptable Behaviour at the request of the Executive Board…

After one bachelor’s and two master's theses, Fenna IJtsma knew for sure: she wanted to do a PhD. Her thesis supervisor warned her about the high workload. In the 'Twijfeltraject' (PhD: to do or not to do) podcast, published by Mare, IJtsma explores with Mare editor Susan Wichgers whether a PhD track…

The 50th Top 450 entry has now been published. In the run-up to the university’s 450th anniversary, we are compiling our Top 450. What is your favourite?

From the Open Days and Student for a Day events to the option of following Online Experience modules: the university tries to prepare prospective students for their new study programme as well as possible. In this context, the bachelor’s programmes Dutch Language and Culture and English Language and…

This week we can vote in the University elections. The University Council and faculty councils are incredibly important. During the fantastic seminar on 50 years of participation that the University Council recently held, our former Rector Carel Stolker aptly said: ‘Without participation, there would…

On 3 September 2025, more than 30 archaeological objects were returned to Peru, Panama and Costa Rica. The objects come from a private collection belonging to the descendants of physician and amateur archaeologist Dr Hans Feriz. In her will, his daughter stipulated that the objects collected by her…

On January 1st Jasper Knoester started as our new dean. How is he finding it? What kinds of things is he doing and what does his day look like? In each newsletter Jasper gives a peek into his life as dean.

Should criminal law have a greater role in protecting this democracy? In his inaugural lecture, Professor Jeroen ten Voorde urges caution.

The EU Return Directive gives migrants residing unlawfully in the European Union the option to leave voluntarily. This is to avoid detention and forced expulsion. But the directive is too vague and can lead to unfair procedures and even human rights violations, PhD candidate Christian Mommers conclu…

The energy transition is already a huge challenge for society, but sustainable use of resources is even more complicated. Yet it is at least as urgent. Ester van der Voet has been working on it for decades, for example within the United Nations. Since February, she is a professor at the Centre for Environmental…

I was disgusted by the recent Ongehoord Nederland broadcast on 15 September. The racist and hateful comments made by alumna Raisa Blommesteijn were, as far as I am concerned, way over the line and in my opinion also violate Article 1 of the Constitution of the Netherlands.

After 14 years of chairing the Faculty Council, Associate Professor Jan Sleutels is handing over the baton. Student Susan van Grol takes over the chairmanship. Time for an introduction to Susan.

Algorithms solve problems. But which algorithm is best suited to which problem? During his doctoral research, Diederick Vermetten developed methods to figure this out. And that is important for the entire field.

Since September, Jelle Oonk has been the chair of the Science Faculty Council. Jelle is a third-year student, combining Physics and Astronomy studies with this responsible role. Time to get to know him better. Five questions for the new chair.

IAt the Criminal Justice Public Lecture on 20 April, Professor of Law and Society Maartje van der Woude spoke about her research into decisions and practice in relation to intra-Schengen border areas and the free movement of persons. The thinking behind the Schengen area is that where the external borders…

A clean street, public transportation, or taxes: these are all public goods that keep society running. But how do people decide which public good to invest in, if at all? These are the kind of questions PhD student Laura Hoenig explores.

The Schoof cabinet has presented its budget. As expected, higher education is facing severe cuts. In the coming period, the Executive Board will regularly look at the consequences of what it deems an irresponsible policy.

Using mathematics to help children with bone cancer. It sounds a little strange, but for statistician Marta Fiocco, it's just her job. She gets a substantial grant from KiKa for it. With that money, she is going to study the effect of chemotherapy adjustments.

Leiden University is a fantastic example of a network university: we create an impact with the city, stakeholders and regional and international partners. The lines of communication are really short and there is a great sense of togetherness. Our good relations with the city have also informed how we…

The glasses have been rinsed, the furniture is in place and the six-member board is ready. A very short time to go before De Fusie opens its doors in the Gorlaeus Building. The brand new bar promises to be a nice addition to the social life on campus. ‘We don't just want to run a cosy bar, but also…

Human resources

Hans Slabbekoorn researches animal sounds and the effect of the noise we humans make on these animals. He is also committed to making his discipline more diverse.

For hundreds of years, children in Ancient Egypt learned to read using The Satire of the Trades, a text in which a father gives advice to his son through descriptions of different professions. PhD candidate Judith Jurjens investigated how this worked in practice.

Minister Dijkgraaf (Education, Culture and Science) has appointed Ionica Smeets and Alex Verkade as coordinators of a new national centre for science communication. The centre will foster a dialogue between researches and society and will gather and share expertise to make science communication more…

After diving into the murder trial of nurse Lucia de Berk, statistician Richard Gill became a leading expert on the statistics of medical murder cases. Together with colleagues, he now wrote a peer reviewed report about the statistical missteps in past medical murder trials. It gives recommendations…

Over a thousand women ended up in a State workhouse between 1886 and 1934. This was a place for vagrants, beggars and drunkards: people who were said to be too lazy to work. Who were these women who were sent there? PhD candidate Marian Weevers found out.

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…

Tech company Uber uses various tricks via the Netherlands to avoid paying tax on its profits. A $16 billion inter-company loan from Singapore has prompted questions with experts claiming the loan is not under arm’s length terms. MEP Paul Tang wants Brussels to investigate.

Today, anyone wanting a new look for their living room watches a home decorating programme or buys an interior design magazine. In the eighteenth century, people went to an upholstry specialist, who would provide you with new wall coverings, curtains and much-needed accessories. PhD candidate Aagje…

A memorial stone honouring professor and resistance hero Ben Telders was unveiled on 12 September at the site of the former concentration camp Bergen-Belsen.

For many years, he was active in various management positions at the LION and even after his retirement he is still very involved. Professor Jan Aarts leads the Leiden hub of the Quantum Delta NL growth fund and is now temporarily responsible for national educational activities. In this way, he is helping…

She is the only student in the core group: Ava Bauer. In November, the assessor of the Faculty of Science was asked to help think about the new faculty strategy. An opportunity she seized with both hands, because having a student in the core group is essential, Bauer says. 'As an assessor, I have the…

Since the invasion of Ukraine in 2022, Russia has been conducting a covert sabotage campaign against Europe. The ‘Bewaken en Beveiligen’ (Surveillance and Security) project team at Leiden University has investigated the scale of these operations and compiled its findings in the report Russian Operations…

On the 6th of December, Buurtlab 070 and the Leiden University Green Office (LUGO) hosted an event at the Spinozahof in the Stationsbuurt, bringing students and local residents together to explore energy (in)justice through the serious game Sunjust.

The latest book by political scientist Matthew Longo came out this spring: 'The Picnic: A Dream of Freedom and the Collapse of the Iron Curtain'. In addition to its many favourable reviews, the book received the prestigious Orwell Prize this summer, which highlights exceptional books on politics.

In July 2023, Leiden University conducted another phase of its ongoing archaeological collaboration with the Kalinago Territory in the Caribbean island of Dominica. Activities focused on mapping and assessing coastal sites impacted by climate stressors, undertaking knowledge-exchange sessions, and co-creating…

By looking at what is different, researchers often discover the special, the unusual. And that has already brought a wealth of highlights – also in Leiden.

During the corona pandemic, the Chinese government's digital communication with its citizens changed. Hard propaganda was increasingly replaced by ‘soft news’. PhD candidate Dechun Zhang mapped the developments in digital society.

Where does Dutch come from? Newly appointed Professor Alwin Kloekhorst looks for an answer to that question in millennia-old languages from Anatolia, the Asian part of present-day Turkey. 'A new interpretation in one of the Anatolian languages can have consequences for dozens of other languages.'

PhD candidate Daniël Gomon has developed statistical methods that could significantly improve research in fields like medicine and demography. ‘Mathematicians don’t like unrealistic assumptions,’ he says. Gomon will defend his PhD thesis on 19 June.

It is one of the most personal and simultaneously most universal experiences of human life: caring for a young child. Professor Sarah Cramsey has been awarded an ERC Starting Grant to investigate how factors such as nationality, political systems, and religion influence the first thousand days after…

The FGGA starter grants provide researchers with the opportunity to launch innovative projects that contribute to both scientific knowledge and societal impact. In this article, Allard de Graaf and Joy Lee share their experiences and ambitions for their research, made possible by this funding.