When galaxies collide, do the black holes at their centre form a supersized black hole? This is what we think happens, but it's not as simple as that, according to Simon Portegies Zwart. Zwart, computer scientist and astronomer, has been awarded a VICI grant to research this phenomenon.

Child marriage has become an increasingly important topic on the international human rights and development agenda. Many organisations are calling for a ban, but what problem would such a ban solve? PhD defence on 18 March 2020.

At least six people are off to a good start of the summer, because they are the recipients of a Meijers grant. For the next few years, these researchers will be able to devote themselves to their PhD research. Let’s meet these new PhD candidates!

Legal proceedings conducted on behalf of apes and animals who are starved for the purpose of an ecological project. What position do animals actually have in the rule of law? And what changes need to be made? PhD candidate Janneke Vink defends her dissertation on 10 October.

We are delighted that our annual "Science to Experience" exhibition will again take place, hosted by the V2_ Lab for the Unstable Media. Students were challenged to communicate their own science-inspired statements as experiences within the exhibition, this year along the theme "MUTATE".

Once a year, former employee and avid runner Dennis Hoencamp returns to his old workplace. That’s when he competes in the Leiden Science Run. As an event coordinator, he once devised the relay race as an anniversary activity. It grew into an annual event for the entire University and the Bio Science…

‘You’re in it together,’ says Pascal Haazebroek, Director of Studies of Psychology. ‘You have an influence on your education; you’re part of a university, so come back to campus now that you can,’ urges Kirsten Buitelaar, student member of the Board of Education. Read this double interview about lecturers…

There is a crisis in the law concerning the accommodation of religious practice. The legal profession is demanding that the law be changed because it does not want religious institutions to have the 'right to discriminate'. The profession holds that evolving societal sexual norms can render lawful religious…

China is prohibited from using export duties to address any environmental problems. This is unfortunate, according to PhD candidate Fengan Jiang (Richard), as export duties could be useful in tackling global carbon leakage. PhD defence on 19 February 2020.

Ustadh Mau Digital Archive project (UMADA) is among the UCLA Library 29 international cultural preservation projects supported by the Modern Endagered Archive Program (Cohort 3). From the 3rd up to the 5th of October, a digitization training workshop took place on Lamu island, on the so-called northern…

What can criminal courts do when the course of justice is obstructed? Countries such as England and Wales apply the instrument contempt of court, which enables the court to act according to criminal law in such a case. Could that work in the Netherlands too? PhD defence on 18 December.

The Faculty of Humanities wants to take a stand in the middle of society with its research and education. That’s why last year, in the middle of a pandemic, the Societal Advisory Board was founded. What are the members’ plans?

Health conditions and social problems often go hand in hand. To address this complex issue in families in The Hague, researchers, managers, support services, policymakers and residents are joining forces. What are the results of this transdisciplinary approach?

More than three quarters of the 237 million Indonesian population has no access to tap water. They are dependent on water from rivers often polluted by industry. Laure d’Hondt conducted research into why it is so difficult to tackle these polluters and will defend her PhD dissertation on 17 October.

Atrocities have been the order of the day in Syria since war broke out in 2011, but the perpetrators are rarely tried. According to PhD candidate Elizabeth Van Schaack, the international community could bring justice in Syria, but only if there is political will. PhD defence on 29 April 2020.

The response of international organizations to the problems of cross-border death and gift taxation needs to be revisited, according to PhD candidate Vassilis Dafnomilis. PhD defence on 3 June 2021.

The out of control ‘Project X’ event in Haren, hooligans who arrange to meet up to fight and beach riots at the Hoek van Holland: group violence is increasingly hitting the headlines. Are those who took part seasoned criminals? And what characteristics do group offenders have? PhD defence on 29 September…

The LUCAS Impact Committee, consisting of Jan van Dijkhuizen, Rick Honings, Casper de Jonge, Angus Mol, Thijs Porck and Aafje de Roest, has offered this year’s LUCAS Public Engagement Award to Dorine Schellens and Peter Verstraten.

The General Data Protection Regulation (GDPR) came into force in 2018. It was intended to protect the rights and freedoms of individual citizens from the risks of personal data processing. Meanwhile, the phenomenon known as big data has continued to advance at a fast pace. PhD defence on 12 Septembe…

Leiden historian Herman Obdeijn has created an exhibition for NIMAR about the centuries-old bond between the two countries. The exhibition opens on 1 March at the Université Mohammed V in Rabat. ‘The Moroccans changed from distant allies to close neighbours.’

Jacques Waisvisz (98) is one of our oldest living alumni. As a Jewish student in the Second World War, he was forbidden from completing his studies. How does he look back at that time, and what was life like afterwards? ‘No one thought that the situation here would become so bad.’

On Monday 23 January 2023 J.T.P. (Hans) de Bruijn passed away at the age of 91. Until 1995 he held the Chair of New Persian Language and Culture at Leiden University.

The Europaeum academic community was awarded the Scaliger medal on 23 September in recognition of its promotion of academic values. Andrew Graham, trustee to the Europaeum and founder and honorary advisor to the Scholars Programme, was presented with the medal by President of the Executive Board Annetje…

Should the media refer to a criminal’s ethnicity? Law students held an online afternoon symposium on discrimination in the criminal justice system – and, while they were at it, society at large.

A symposium with a festive touch was organised at Leiden University on 20 March to mark the 50-year anniversary of the marriage of Princess Margriet and Pieter van Vollenhoven. The theme of the symposium was 'Catastrophes and the Law', a theme, the royal Princess and Prince were quick to reassure the…

NWO has awarded a Vidi subsidy to a total of 89 young and innovative researchers. Leiden researchers have won twelve of these subsidies and three subsidies have gone to the LUMC. Each researcher will receive up to 800,000 euro to develop a particular research theme or to set up a research group.

Increasingly, crime and immigration are mentioned in one breath. This 'interweaving' of these terms is referred to as crimmigration, an expression mainly used in legal science. But what does crimmigration actually entail in practice? Defence on 8 January 2020.

The launch meeting of the Leiden Islam Academy on 7 December in the Academy Building drew just the right audience: a diverse group of people who were all in some way engaged with Islam. This was just what the directors of the Academy, Maurits Berger and Fatiha Azzarhouni, were hoping for.

Each year it is estimated that thousands of people fall victim to human trafficking in the Netherlands. Many of these victims are minors. Assistant Professor of Criminal Law Luuk Esser conducted research on the current legislation to combat human trafficking. His PhD defence is on 25 September.

A delegation from Leiden University visited various universities in Japan at the end of March. The strong ties between the Netherlands and Japan are still based on a long tradition of knowledge exchange.

New ways of working like working from home can have a positive impact on a person’s career, but only when their superior supports their choice. Researcher Maral Darouei will defend her PhD thesis on sustainable careers on 9 June 2020.

How long should and may a doctor remain silent if he suspects child abuse? A GP who often sees the whole family, or a paediatrician, fills a crucial role when it comes to picking up signals of child abuse. Mirjam Sombroek-van Doorm examined how tenable professional confidentiality of medical practitioners…

Religious minorities and their languages in the emerging nation states of the Middle East (1920–1950)

Leiden Law Cast is a podcast made by Leiden Law School, Leiden University, for everyone who wants to learn more about current legal issues.

In Belgium, officially recognised religions receive financial support from the state. Partly as a result, there is no clearly implemented secularism (separation of church and state) though this is considered to be a guiding notion in modern constitutional theories. PhD candidate Alain Vannieuwenburg…

What you see is what you get, is how people who know him describe Mark Rutgers who became Dean of our Faculty on 1 March. For some of us he is a familiar face, and for those who don’t yet know him, he hopes to get to meet them soon. His first three months will be taken up with a lot of reading and even…

Three professors voice their concerns about a vulnerable group in our society: children who come into contact with youth care.

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.…

A cannon, a sabre, guns: these Sri Lankan objects had been in the Rijksmuseum for centuries. In early December, they were returned to Sri Lanka. Associate Professor of Colonial History Alicia Schrikker led the research that formed the basis for the restitution and published a volume on the findings…

In this bilingual profile, you follow university teacher training with a special focus on language, culture and diversity in bilingual and international education. Student Lauren Rutherford and educator Tessa Mearns talk about this programme.

Under extreme pressure and in agreement with the Faculty Board, the programme chairs, represented by a core group, have worked over recent weeks on additional recommendations based on the Perspective 2028 plan. On 1 December they presented their Alternative Perspective 2028 to the Faculty Board. The…

To read Chekhov in the ‘original’. That was what motivated Arie van der Ent to study Slavic languages and literature with Karel van het Reve at Leiden University. ‘My love for Chekhov hasn’t faded,’ says Van der Ent from his home 60 kilometres south of Kyiv. ‘But it has for the rest of Russia.’

In a packed lecture hall at Wijnhaven, Nobel Prize winner Paul Krugman succinctly summed up the essence of his argument on Wednesday 17 September: ‘Running a good society is hard’. His lecture held up a mirror to economists and policymakers.

Within a single generation, the digital world has changed completely: from a technical niche for ‘nerds’ to a reality that affects everyone. Cyberattacks, data breaches and system failures can disrupt essential social processes. How can we ensure that our society remains digitally resilient?

An international research team is to search for invisible life in the Galápagos Islands. The diversity of bacteria and other microscopic organisms may not be evident to the naked eye, but it is essential to nature. To the islands' giant daisies, for instance: unique endemic plants that are currently…

The Advanced Nano-electrochemistry Institute Of the Netherlands (ANION) consortium will receive 23.6m euros in Gravitation funding for research on important electrochemical processes for energy transition. An additional four consortia with members from Leiden have also been awarded funding.

A review of Elke Devroe's participation in the European Society of Criminology of 2016 : The first conference of the European Society of Criminology was held in 2000 in Lausanne. Now, 16 years later and lots of new ESC-members later, the 16th Annual conference of the European Society of Criminology…

Palestinian national Abu Zubaydah was captured by the CIA in March 2002 and has remained in detention ever since, without any form of trial. Leiden professor Helen Duffy is doing all she can to secure his release or a fair trial. Her hopes now lie on international pressure and the UN Working Group on…

At the age of six, Barbara Gravendeel already knew what she wanted to be: a biologist. The seed was planted in the garden of her childhood home: an old orchard surrounded by a large hedge. Since 1 May, she has been the scientific director (prefect) of the Hortus botanicus in Leiden, and all the pieces…

Patients who can’t afford medicine. Refugees who need help. Expats who are ill. All alongside research into obesity. Having trained as a doctor, Dennis Mook-Kanamori chose the hard reality of life as a GP together with a job as a researcher at the LUMC.