A vitamin D deficiency is often associated with smoggy English industrial cities during the Industrial Revolution, but research carried out on skeletons now suggests that the ‘English disease’ was also prevalent in rural areas of the Netherlands. Doctoral defence on 29 January.

A single tiny molecule that can destroy flu, corona, HIV and Zika viruses? Yes, it really does exist. Biophysicist Niek van Hilten, who will receive his doctorate on 14 September, contributed to this discovery.

Environmental economist Rutger Hoekstra is a guest researcher at Leiden University. He is studying the question of how we can measure societal progress based on a broader range of factors than only Gross Domestic Product.

During World War II, the Nazi’s ordered a coastal defensive line to be built from the south of France to Norway. This Atlantik Wall aimed to defend their territories in continental Europe from an Allied naval invasion. The defensive line went right through the Dutch city of The Hague. The material remains…

As of January 2022, Ivo van Vulpen has been Professor by Special Appointment of Science Communication at the Leiden Institute of Physics (LION). Van Vulpen will be researching science communication in general and will aim to underline the value and importance of science communication.

A pill can make you better, but how exactly does it work? Primary school children from The Hague found out during a visit to the Centre for Human Drug Research (CHDR) as part of a new teaching module ‘The journey of a pill’.

Starting as an MP during the Covid-19 pandemic and after the recent ‘role elsewhere’ debacle during the coalition talks for a new Dutch government, alumna Mariëlle is looking forward to making a real contribution in society.

The West has missed several opportunities to prevent the invasion of Ukraine or, at the very least, to better support the Ukraine, claims Frans Osinga, Professor by special appointment War Studies.

The opening ceremony of the Olympic Games in Munich in 1972 made a big impression on Nicole Hoevertsz. I’m going to be there one day, the eight-year-old Nicole decided. Her passion for sport and her perseverance brought her further than the once so introvert Aruban had dared to hope. Her appointment…

Emmely Benschop (41) has been working as the new director of the Centre for Professional Learning (CPL) in The Hague for several months now. She sees significant growth potential.

In the honours course Sustainability & Health, students examine the causes and effects of climate change – but also how they can relate to these themselves. How do you build resilience in turbulent times? An excursion focused on silence and compassion helps students with this challenge.

“A group of students does trigger something different than a research agency,” says Sophia de Rooij, chairman of the board of the Amstelland Hospital in Amstelveen. She reflects on a successful first year of cooperation with the Leiden Leadership Programme. While students got a taste of what working…

Natalia Sobrino-Saeb has attended the Nobel Peace Prize award ceremony in Oslo. She was awarded this honour after winning the essay competition of the Nobel Ignitor Fellowship, a programme that seeks to inspire young changemakers around the world – for change can be made by all of us: “You never know…

Portraits of six Leiden professors for whom 8 February 2016 was the first time that they took part in the procession of Leiden professors at the Dies Natalis.

Alumnus Rennie Roos lives and works in Indonesia. What took him there, what does he do there and what inspires him?

Young people tend to take more risks than children or adults. This trend is related to the reward centre in the brain, which is much more active when they are rewarded, PhD candidate Barbara Braams discovered. Personality, testosterone levels and social context also play a role in risk-taking.

Leiden University staff will be starting the national staggered strike against the cuts to higher education on 10 March. The Leiden and The Hague Action Committee is calling on staff to join teach-outs at schools and other public organisations on that day.

Radhika Gupta has received a Consolidator Grant from the European Research Council to study how transnational Islamic charitable networks are entangled with Western humanitarianism and neoliberal welfare frameworks.

Na gedwongen uithuisplaatsing gaan vier op de tien kinderen terug naar huis. Van deze kinderen wordt een op de vier opnieuw uit huis geplaatst. Bovendien komt de uithuisplaatsing vaak onverwachts. Dit blijkt uit Leids onderzoek in opdracht van het WODC.

A microscope with incredible sharpness that leaves samples unharmed – Guido Stam helped develop one. During his PhD research, he combined light and electrons to study biological samples. ‘We can now measure things that simply weren’t possible before.’

How is the EU transforming from a soft power to a geopolitical actor, and what does this mean for the EU’s partners and global security? On Friday 13 December, a roundtable discussion offers students insights into these evolving dynamics, bridging theory and practice.

Architect Elisa Meijer is the face of the Humanities Campus. She knows all the buildings, from the Reuvensplaats to the Matthias de Vrieshof, like the back of her hand. In her role as Housing Adviser she has now spent more than three years dealing with everything necessary for the development of a new…

Hydropower plants need not be disastrous for fishermen and nature. For that, we need to place new dams more strategically, but also modify or even remove some existing ones. Valerio Barbarossa and Rafael Schmitt showed that with a computer model of the Asian Mekong basin.

Two thousand years ago, the Middle East found itself caught between the rise of the Roman Empire in the west and the Parthian Empire in the east. PhD candidate Nolke Tasma has been awarded an NWO grant to investigate how local inhabitants experienced these changes.

Benjamín Maldonado, Orestes Kyrgiakis, Roos Capel and Iskra Cvitković are the new student members of the Programme Committee (OLC). The board advises the Executive Board and the Faculty Board about educational matters, such as the determination of the Course and Examination Regulations and the evaluation…

With interactive live presentations, a mass of chat opportunities and 360 degree videos, more prospective students than ever can gain a good impression of their chosen programme and the city they’re thinking of studying at. Instead of meeting up in the Pieterskerk or faculty buildings, thousands of…

Astronomers have discovered seven Earth-like planets around a dwarf star in our galaxy. Three of these planets are located in the habitable zone of this star, and may contain liquid water. ‘The next step is to study the atmospheres for signs of life. In Leiden we are experts in that area,‘ says planetary…

You may have noticed this happening more often: your municipality sends you an online questionnaire to find out your opinion on the renovation of a certain area or the design plans for a new district. But how inclusive are these online platforms where citizens can participate in decisions on government…

Leiden Professor of Maths Frans van Schooten Jnr. (1615-1660) and his wife Margrieta were painted by Rembrandt. This is the claim made by mathematician and art historian Johan Zwakenberg in his recently published article in the 2018 Leiden Yearbook. Leiden art historians are not completely convinced…

Inspired by a gift she received at a conference abroad, Laura Kamsma, coordinator of the FGGA International Office, went looking for new promotional goodies to hand out to the representatives of international exchange programmes at Leiden University - Campus The Hague. The gifts had to meet three requirements:…

Jiska Ogier studied notarial law, which wasn’t always easy because she went to lectures in a wheelchair. As a student she pushed to make society accessible. And with her law degree and lived experience she has now made this her work. ‘You can achieve a lot with creative solutions.’

After a detour via the ANWB in Munich, alumna Manon Schouten works as a history teacher at two schools. ‘It's so rewarding to see the material resonate with students.’

Victor Gijsbers, university lecturer in Philosophy, has been chosen as a fellow of the Leiden University Teachers' Academy. Over the next five years and with €25,000 to spend, he will be looking for a new interpretation of the Philosophy of Science for Humanities course. ‘Treating a tough and abstract…

Chiara Porro from Australia studied International Relations and Diplomacy at Leiden University and has been Australia’s Ambassador to the Holy See since August. How did she end up at the Vatican and what is it like? ‘The Pope told me his door was always open!’

As a student, Ratna Lachmansingh wrote her thesis on horror films. Now she is the director of Leiden International Film Festival.

Art historian Elizabeth den Hartog has been studying medieval sculpture at Leiden University for 32 years. Like a detective, she searches buildings, books and archives in the hunt for the cultural meaning of unique sculptures.

Leiden University has secured an impressive 12 European exchange grants. This is good news for students, lecturers and researchers from home and abroad.

Seven years ago, Aris Politopoulos left Athens for a master’s programme at the Leiden Faculty of Archaeology. Now he has nearly finished his PhD dissertation. Furthermore, he has become a lecturer at the research group for the Archaeology of the Near East, and co-founded a foundation that deals with…

Theoretical physicist Luca Giomi receives a 2 million euro ERC Consolidator Grant for research into flowing cells in a strange hexatic phase, which is half fluid, half solid.

They confounded expectations and went to university anyway – as a woman of colour, a working-class student or refugee... Throughout the centuries the university has always welcomed pioneers. Students for whom going to university was not the obvious choice and who did not grow up in an academic environment.…

Child abuse and child neglect are often seen as one and the same problem. But it can be useful to separate the two to gain more insight into the characteristics of the two phenomena. This is what pedagogical scientist Renate Buisman shows in her dissertation. PhD defence on 28 May.

What is the Leiden Leadership Programme? And why is it a worthwhile addition to your master’s? Alumnus Ruilin Ma gained more confidence in his capabilities through the LLP – but there were things he valued even more: ‘Proud to be part of such a warm community.’

Astronomers from Leiden Observatory have developed a new method to find distant quasars and better distinguish them from other objects that look like them, using machine learning techniques. The research result has been accepted for publication in the journal Astronomy & Astrophysics. It is the last…

Wie de Nederlandse taal spreekt, heeft betere kansen op de arbeidsmarkt. Investeer daarom in taalles van migranten, is de boodschap van wetenschapper Giacomo Boffi.

An article by Bert Fraussen, Adria Albareda, Caelesta Braun, Moritz Muller & Erin Sullivan, published as a three-part blog series.

In addition to cholesterol and high blood pressure as risk factors for atherosclerosis, we may need to address our own immune system to prevent a heart attack or stroke. Marie Depuydt revealed which cells exactly reside in the atherosclerotic plaque that narrows an artery. The presence of a diverse…

Rosalien van der Poel has worked in every nook and cranny of the university over the past thirty years. Now she is stepping down as institute manager of the Academy of Creative and Performing Arts (ACPA) to enjoy her retirement. Last year, we spoke with Rosalien about her career.

With a healthy dose of logic and creativity, mathematics student Lance Bakker shows how computers can prove complex mathematics. His method proves intricate formulas without calculating every intermediate step. It earned him a nomination for the Leiden Science Young Talent Award 2025.

Leiden Law School alumnus Dave Wesselink began his career as a lawyer in 2022. He’s also a professional bobsledder. ‘When you’re tearing round a bend at 130km/hour, you need to be able to stay calm and focused on what you’re doing.’

Inaugural lecture Marc Bruijnzeels