On Human Rights Day 2024, the International Court of Justice is charged by the General Assembly with delivering an Advisory Opinion asking, in effect, what does the climate crisis imply for the rights of vulnerable states and people? Researcher Jens Iverson shares his thoughts on this event.

They were eagerly awaited: four letters from five ministers that should provide clarity on how to get us out of the nitrogen crisis. Nitrogen expert Jan Willem Erisman explains the plans. And says whether they will get us out of the nitrogen crisis.

You have prepared a research project, put together a plan, and you are ready to travel to the country where you will be conducting your fieldwork. What do you do when Covid suddenly makes that impossible? Nadia Sonneveld was forced to relocate her project Living on the Other Side to a hybrid form: ‘It…

How do molecules originate and evolve in space? And how does that ultimately determine the chemical composition of planets and their atmospheres? The Dutch Astrochemistry Network (DANIII) receives 1.6 million euros from NWO to find out. A large group of Leiden astronomers and chemists is contributing:…

Second-year MIRD students showcase their thesis research on global issues during the 2025 Thesis Symposium, bridging theory and diplomatic practice.

The 10th edition of the World Congress of African Linguists (WOCAL), hosted by Leiden University, will be held online from 7 – 12 June. Leiden University Centre for Linguistics (LUCL) researchers give us an insight into how important and special this event actually is.

Crucial information about research, funding or how university rankings are created is often not freely accessible. The Barcelona Declaration on Open Research Information calls for such information to be made open. Professor Ludo Waltman is one of its initiators. What needs to change?

More than a course. That was the aim of the Leiden Tutoring programme. Through weekly tutoring lessons, students did not just earn five EC. They helped Dutch primary-school children from neighbourhoods with a low socioeconomic status.

The challenge: take three hundred students from vastly varying disciplines and teach them the basics of academic thinking in twelve lessons. Impossible? Professor Ben Arps and his team of tutors succeeded. It resulted in a large amount of positive student evaluations.

How can society let go of its obsession with economic growth and focus on goals as wellbeing, inclusion and sustainability? This is one of the core questions which a new 3 million euro European project will tackle the upcoming four years. Leiden University researcher Rutger Hoekstra is project coordinator…

After a process of more than two decades, the new Greek-Dutch dictionary was presented on Wednesday 5 June. University lecturer Lucien van Beek acted as manager of this project headed by Ineke Sluiter for the last nine years. He is also one of its editors-in-chief.

And the construction has started! Students of the Leiden Science study associations ceremoniously hammered down the first poles of the new Gorlaeus on Tuesday morning. By doing so, they initiated the second phase of the construction of the second part of the new building.

De onderzoeksteams zijn opgezet, samenwerkingen zijn gestart, projecten afgetrapt, de eerste startsubsidies zijn binnen en de websites zijn in de lucht. Het stimuleringsprogramma Citizenship, Migration and Global Transformations, dat bestaat uit de twee pijlers Social Citizenship and Migration en Global…

Five questions for James Shires, assistant professor at ISGA, about his new book, The Politics of Cybersecurity in the Middle East. The book is available to order now.

In a supplementary decision on 17 May 2022, the Executive Board of Leiden University has concluded that it will publish the titles of seven articles in which there is evidence of malpractice. This concerns a former staff member of the Institute of Psychology. The Executive Board considers it to be in…

Is it ethical to freely redistribute photographs taken in colonial contexts, historically and today? Christoph Rippe, PhD-candidate Cultural Anthropology, suggests that people might not have been always fully aware of what happened to their photographs after they were taken. 'But nowadays, with the…

'Make sure you separate yourself from your work.' And, 'Your dissertation doesn't have to be a magnum opus.' It was raining tips for PhD students at the humanities PhD event on well-being on Tuesday, 5 September.

In March 2021, Prof. dr. Jan Aart Scholte, Professor Global Transformations and Governance Challenges at Leiden University, co-edited with Dr. Blayne Haggart and Dr. Natasha Tusikov the volume Power and Authority in Internet Governance.

‘Take science communication more seriously.’ This is the message that Ivo van Vulpen, professor by special appointment in Science Communication in Physics, wants to convey during his inaugural lecture. At the moment, a lot of researchers look down their noses at this while it is extremely important…

113 Suicide Prevention gave a guest lecture about suicide prevention at the Spanish Steps in Wijnhaven

ICT, Organisation

Exploring logging's real impact: Insights from Anthropologist Tessa Minter in the Solomon Islands.

What motivates citizens to participate in a citizen science project on plastic pollution? And does that motivation change over time? Liselotte Rambonnet tried to answer these and other questions with her research on the Clean Rivers (‘Schone Rivieren’) project. Rambonnet is a PhD student at the Institute…

Anthropologist Rodrigo Ochigame studies how AI is changing the practice of scientific research. From astrophysics to mathematics to climate science, they find that the adoption of new AI models is raising questions about what counts as reliable scientific evidence.

A tenacious postdoc researcher persuaded Professor Marc Koper to research the oxygen reduction reaction. In Koper's eyes, there was little of interest there. But they promptly discovered a whole new way to improve fuel cells on hydrogen and oxygen. Their article appeared in Nature Catalysis on 07 Ju…

The university is home to many pearls of research institutes that do not make the news every day. The Executive Board visited one such pearl, the Institute of Philosophy, on Tuesday 1 July. It resulted in an inspired conversation.

Sharing scientific data, transferring money, or sending other sensitive information online: with cryptography, applications make sure your data does not fall into the wrong hands. Mathematician Thomas Attema (CWI/TNO/Leiden University) helps with this. For his PhD research, he developed a new technique…

What do the cloth trade and slavery have to do with each other? Quite a lot, as it turns out, as by history student Sjoerd Ramackers demonstrated in his bachelor’s thesis. He reveals that cloth merchant Daniel van Eijs was closely associated with four plantations in Berbice, a former Dutch colony on…

We take it for granted that water comes out of the tap and electricity out of the socket. But that isn’t always the case. Last Tuesday began like any other day, with our board meeting in the morning. But things were soon to change.

Always taking the same route to work, going for that one dish in restaurants and going on the same holiday each summer: this may ring a bell for those who don’t like uncertainty. Researchers are now discovering that this aversion affects how we understand the world.

As a student, university lecturer Berthe Jansen fell under the spell of the Van Manen collection: a collection full of Tibetan writings and objects. A €1.5 million grant now makes it possible to take a really close look at it. 'There is still so much to do and discover.'

Does a communal garden provide cool air and warm neighbourly relations? Does an additional row of trees increase biodiversity? These kinds of questions are key in the COMBINED project, on which Leiden scientists and residents of The Hague, among others, can work for six years with 4 million euros from…

Fantastic plants, dizzying patterns and pulsating sounds: researchers from Leiden are going to study the effects of a simulated psychedelic trip on the mind and body at Lowlands Festival. Why might this be interesting for therapies?

On average, the residents of The Hague Southwest (Zuidwest) are poorer, have more health problems and a lower level of education than the residents of other districts in The Hague. With the Southwest Pact, the municipality, the state, residents, entrepreneurs and professional parties are joining forces…

Graduation MIRD Class of 2024: 'The world is better off with students like this'

The whole world gets raw materials from Latin America, but at the expense of nature. Håvar Solheim researches the role of organised crime in this environmental crime and Soledad Valdivia researches sustainable urban initiatives in Latin America. What do these university lecturers think the future of…

We are already halfway through the academic year 2022-2023. And the Faculty Council hasn’t been sitting around doing nothing! Staff members Gert-Jan Lelieveld and Tim Mickler give us an update about the Vision and Strategy Plan and what they are doing in the additional hours available for Council wo…

Proton therapy is a new way of treating cancer in which radiation doses are delivered more precisely. This results in less damage to surrounding tissue and fewer side effects. Professor Marco van Vulpen is medical director of HollandPTC in Delft, where the social value of this therapy is studied. Van…

In his inaugural lecture Professor of Environmental Sustainability Jan Willem Erisman calls for local solutions that give people more freedom in how they meet environmental, nature and climate goals. This would allow farmers to come up with their own solutions to the nitrogen problem. The idea ties…

Psychologist Bernou Melisse was shocked at the long waiting lists in the Netherlands for people with binge-eating disorders. The problem was not yet on the map in Saudi Arabia. She therefore decided to study how people suffering from binge eating can be helped better in their own region of the world.…

Lecturers Marjo de Graauw and Malte Riemann have both received a Comenius Teaching Fellowship.

Psychology students usually only get to meet patients very late in their studies. Therefore, neuroscientists Ineke van der Ham and Judith Schomaker want to research whether students learn more effectively from a virtual experience with a patient with dementia than from a text. Schomaker: 'We have plans…

December 2020 saw the crowning publication of the Landscapes of Survival project by Professor Peter Akkermans. Its main topic is human habitation in marginal environments like the deserts of the Arabian Peninsula. ‘The people living here built their own society, and they would not have viewed it as…

Over the past two years, the institute has undergone important developments under the leadership of Scientific Director, Professor Hanneke Hulst. She also steered the Institute with passion and determination through this tumultuous period. She leaves behind a strong, resilient and forward-looking organisation.…

There has been a lot of media attention for the report recently completed by the Institute of Environmental Sciences (CML) from Leiden University. However, it has long been known that Dutch surface water contains too many toxic pesticides. ‘We will have to improve our ways of life together with many…

Rapid developments in DNA techniques allow researchers to find out more and more about human genetics. An international group of scientists has drawn up five ethical guidelines to ensure that this DNA research is better regulated. Leiden archaeologist Marie Soressi – one of the signatories - explains…

How ethical is research involving humans and robots? And can research on artificial intelligence cause problems when it ends up in the wrong hands? In any research involving humans or their data, the ethics committee assesses where the issues are. Associate professor at LIACS Suzan Verberne chairs the…

Expert in public affairs and politics Arco Timmermans advised the informer Kim Putters.

On June 16, 2025, the Institute of Political Science at Leiden University hosted a panel debate about the ongoing mass student-led protests in Serbia. The protests have shaken the increasingly illiberal regime in Serbia to its core and have grown into the largest student protests in Europe since 196…

Dutch political parties have presented their own 'solutions' to make society 'safer'. How do the party positions compare with scientific research on crime reduction?