Tensions are rising between Russia and the West. Can an invasion of Ukraine and an international war be avoided? Political scientist and Russia expert Hans Oversloot warns of the consequences if the West chooses a collision course. ‘Offer Russia a dignified exit strategy.’

This week the regional court in The Hague gave a ruling that has attracted international attention. The State of the Netherlands (Ministry of Social Affairs) was taken to court by two famous writers, Wieringa and Februari, several NGOs and a trade union.

Trinidad and Tobago, a twin-island nation, has over 300 identified archaeological sites that testify to its diverse history, covering pre-colonial, colonial, and post-colonial periods. Many of these sites were discovered by archaeologists in the 20th century and have not been regularly visited and assessed.…

An international team of researchers, involving members from the ERC Synergy project NEXUS 1492 based at the Leiden University, the Universities of Oklahoma, Copenhagen and York reveal challenges when studying ancient microbiomes in a recent issue of Scientific Reports.

The Sanquin blood bank gathers data on every donation. Around 720,000 donations are made every year. ‘That generates a mountain of highly valuable data,’ says Leiden PhD candidate Marieke Vinkenoog.

Paul Wouters is not keen on people with a dual agenda. However, for the coming period, he himself will be in that very position. Besides his work as Dean of the Faculty of Social and Behavioural Sciences (FSW), he is temporarily coming to strengthen the Board of the Faculty of Science. Who is this Acting…

The Netherlands is embroiled in a complex nitrogen crisis. Berent Baris wants to use his NitroGenius game to demonstrate the complexity of this crisis.

Sandy Overgaauw has been awarded a 25,000 euro grant from the LUF for her research into PTSD in Syrian refugee children in the Netherlands. The research should lead to a screening method that can be used to determine which children are at higher risk of developing posttraumatic stress disorder (PTSD…

Will British universities become isolated after Brexit? The University of Oxford has set up a new programme for excellent young researchers to try to prevent that happening. Two Leiden PhD candidates are taking part. 'We have lost a lot of the citizens of Europe.'

By far the majority of users of child sexual abuse networks (or child porn forums as they are sometimes called) on the dark web do not actively communicate there but download illegal material, therefore committing a criminal offence. But they often stay under the police and judiciary’s radar. PhD candidate…

Migraine can’t be diagnosed with a blood test, scan or physical examination. Language therefore plays a crucial role in its diagnosis. Neurologist Joost Haan has researched the relationship between language and migraine, and looked at how migraine is described in fiction. His PhD defence is on 22 Oc…

With their thesis research, Master’s students from Leiden, Rotterdam and Delft help solve real-world problems in The Hague Southwest. That is the aim of the Thesis Project. We spoke to two students who are participating in the project.

Not many scientists can claim to have received funding from NWO to blow bubbles and play with sand, but Martin van Hecke definitely can. Van Hecke, Professor of the Organisation of Disordered Matter, delivered his inaugural lecture on Friday 4 September, under the enigmatic title of: ‘Bellen, bollen,…

Anna Loh is a third-year student of the BA in Arts, Media and Society. We spoke with Anna about what it’s like to write a thesis during COVID-19, Instagram selfies at the museum and growing up abroad.

Interest organisations are increasingly taking legal action and that’s a good thing for democracy, says PhD candidate Rowie Stolk. ‘It means that the most vulnerable social groups – including children and refugees, who tend to have a weaker political position – are protected.’

Gerrit van Dijk was born on 14th August 1939 in Kampen. He studied Mathematics in Utrecht where he also received his PhD in 1969 on the thesis ‘Spherical functions on the p-adic group PGL(2)’. His supervisor was prof. dr. T.A. Springer. The academic year 1969-1970 he spent in Princeton, at the Institute…

Previous OSCL events and member initiatives include:

A research team from the Institute of Security and Global Affairs (ISGA) has received over 3 million euros in funding from the Knowledge Centre Surveillance and Protection, a partnership between the Dutch National Coordinator for Counterterrorism and Security, the Public Prosecution Office, the police,…

Scientists, and not only those in the social sciences and humanities, think that valorisation is mainly about economic profit. This is what Stefan de Jong writes in his PhD dissertation. His advice: spread knowledge about valorisation; that way it’s facts that determine the valorisation debate, and…

In the academic year 2021-2022 the Social Resilience and Security interdisciplinary programme will offer two courses for interested students who are entering the third year of their Bachelor's degree. You can sign up for these courses in your elective (minor) space. The courses are available to students…

The LUCAS Institute has both a new Scientific Director and a new Education Director. Stijn Bussels and Esther Op de Beek both commenced their new roles at the start of the academic year.

The number of international organisations has increased over the last decades. As has the number of cities interested in housing these organisations. International organisations bring wealth to cities and help improve their reputation. They often act as a magnet for other international corporations.…

Every January, students of the Minor Sustainable Development have the opportunity to put what they’ve learned over the last few months into practice in a choice of exciting and practical courses called Area Studies. This year, for the first time, there was a choice of four locations: The Netherlands,…

Another successful edition (the fourth!) of the Leiden Alumni in Brussels event took place on 23 February. With a fully booked registration list, it already promised to be a great success in advance. The event took place at the Baker McKenzie location right in the centre of Brussels. As the area was…

For her research, PhD candidate Liselore Tissen put one famous painting after another through a 3D scanner. The resulting reproductions were indistinguishable from the originals. But what does this mean for our interpretation of art?

How do we get better at detecting research errors? And how do we ensure that we no longer see those errors as evidence of our inability, but as keys to better and more reliable research? Scientists offer advice during the third Psychology Connected.

Marike van Aerde was at the brink of traveling to India for fieldwork when that country closed its borders, three weeks ago. Only a few days later, Leiden University followed suit in temporarily banning all fieldwork trips. With her research team scattered across different continents, she does her best…

Steeds drukker is het in populaire banen rond de aarde voor ruimtevaart. Niet alleen met satellieten, vooral met meer afval, wat onveilig is. Zhuang Tian promoveert op de juridische kant van afgedankte ruimte-apparaten. Wie troep veroorzaakt, moet het weer opruimen.

The nominees for the IRO Thesis Prize 2024 and the Prof. Dr. J.Th.J. van den Berg-prijs 2024. Who authored the best thesis in Leiden University’s bachelor’s programme in Political Science?

Even with state-of-the-art technology, it is almost impossible to see: a cosmic neutrino. Yet scientists have managed to image this particle with a deep-sea telescope. And that could help to better understand our universe. Leiden particle physicists collaborated on this ambitious project, published…

The Gouy-Chapman theory describes what happens near an electrode when it is in contact with a salt solution, but this description does not match reality. Researcher Kasinath Ojha, assistant professor Katharina Doblhoff-Dier and professor Marc Koper present a new version. ‘The next generation of textbooks…

Are you working at Leiden University and researching migration regimes outside of the Global North? Are you interested in doing fieldwork or a research visit at one of our partner universities? Then you might want to join the Leiden team of the EU-funded Marie Curie Staff Exchange Network on non-western…

Gijs Zebregts had just graduated from International Studies when he was stricken with acute leukaemia. A stem cell donor brought relief. Now he is going to cycle from Florence to Rotterdam to raise money and awareness for the donor bank.

The field of artificial intelligence has developed rapidly in recent years. We spoke with Stephan Raaijmakers, professor by special appointment in Communicative AI, about the impact of artificial intelligence and why everyone should pay more attention to developments in this field.

It is a full classroom: more than 30 pupils from 5 and 6 vwo are present to listen to political scientist Leila Demarest's lecture. She gives a brief introduction on the topic she is about to discuss: democracy in the global North and South. At first, the group seems a bit quiet, but when she asks questions…

The book ‘Geleerde Zorgen: twee eeuwen academische geneeskunde in Leiden’ (‘Learned Care: two centuries of academic medicine in Leiden’) was presented on 16 December to Annetje Ottow (President of the Executive Board of Leiden University) and Pancras Hogendoorn, Dean and member of the Executive Board…

On Tuesday a few dozen students and staff from Leiden University protested on the square in front of the Lipsius building against the classroom scanners that have been installed in buildings and lecture halls. They are demanding that the scanners be removed.

For the first time ever, Leiden biologists have found that the ‘nose’ of spirochetes – worm-shaped bacteria – have a two-fold symmetry. A remarkable discovery, as the ‘nose’ of every other bacterium has been found to have a six-fold symmetry. First author Alise Muok wrote a popular blog about the findings…

A partnership with the Leiden Leadership Programme: what does it bring you? Two partner organisations in the field of sustainability, Arcadis and Bioto, share their experiences: “It's great to be surprised by new insights.”

With the new Euclid satellite, scientists are going to map a large part of the sky. The satellite ofthe European Space Agency (ESA) will soon give them a better view of the galaxies and matter in the universe. Professor of Galactic Astronomy Koen Kuijken and a team of Dutch scientists are receiving…

Self-driving cars, surgery robots, and stock market algorithms: the use of robots and Artificial Intelligence (AI) is rapidly increasing. What are the opportunities for this development, and what the dangers? The Honours Class ‘Robot Law: Regulating Robot and AI Technologies’ prepares students for the…

On Wednesday 13 December, Melanie Fink will defend her doctoral thesis ‘Frontex and Human Rights: Responsibility in “Multi-Actor Situations” under the ECHR and EU Public Liability Law’. The defence will take place at 10.00 hrs at the Academy Building of Leiden University, Rapenburg 73. The supervisors…

Everything is different this year because of the corona measures; introduction weeks, student life and education. In order to give new students a proper and warm welcome, a lot of work has been done to create the frameworks for a mentor programme. The working group 'Tutoring and Cohorting' has prepared…

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…

The Amsterdam media played a major role in the rise and fall of Dutch Brazil, the colony held briefly by the Dutch West India Company in the 17th century. This is the conclusion reached by Professor of Maritime History Michiel van Groesen in his book ‘Amsterdam’s Atlantic’.

Now that university buildings have closed, most staff members have started working from home. How are Faculty of Science colleagues faring in their new offices?

Since the beginning of September, it is a fact: our faculty has a new strategic plan. The plan outlines what we will collectively commit to in the coming years. Is that important? For sure, say our directors Suzanne van der Pluijm (Operations) and Bart de Smit (Education). ‘The purpose of a strategic…

Donororganen zijn er nooit genoeg. De organen die wel beschikbaar zijn, moeten vliegensvlug getransplanteerd worden. De geneeskunde zet daarom volop in op het langer goedhouden van organen. Marlon de Haan (24) onderzoekt hoe je nieren buiten het lichaam in leven kunt houden.

Society has an impact on what is viewed as heritage. Susanna de Beer investigated how heritage can be made enduring by making use of it in the present. Lars de Kruijf, student of Dutch and Journalism New Media, spoke with Susanna de Beer.

Data about COVID-19 were everywhere during the pandemic, but how will all this data continue to be managed and kept open so that it is usable in the future? We spoke with Kathleen Gregory, researcher at the Centre for Science and Technology Studies (CWTS), who will study this question in a new project…