International bachelor’s and master’s students started the OWL on Monday morning. During this introduction week they get to know their new university, city and each other.

Not everything that comes close to a black hole is swallowed by it. Black holes can also hurl material away, and that chance turns out to be considerably bigger than previously thought. Martijn Oei's accidental discovery and his subsequent research on it earned him a cum laude promotion on 12 Decemb…

Not only dark matter, but also ordinary matter and dark energy are tracked in the largest ever cosmological computer simulation ever. In the FLAMINGO simulations, you can see virtual galaxies and clusters of galaxies emerging over the course of billions of years. This is no easy task: with more than…

What does it mean for a citizen to be ‘literate’ in astronomy? Astronomers who participate in outreach to the general public experience various degrees of astronomical knowledge among people. But so far, there had not been a systematic evaluation and definition of what astronomical literacy actually…

Alumna Louwien Eising is headteacher of Carmel College in Emmen. How have things been during the pandemic? And how has her degree in Education and Child Studies helped her? ‘In the evening I was attending lectures and the next day I was applying what I’d learnt in the classroom.’

The 2015 and 2018 Personnel monitors show that maintaining a good work balance remains difficult for staff at the Faculty of Humanities. Lecturer and researcher Judith Naeff and holder of the operational management portfolio Suzy Sirks have joined the Work Balance Steering Committee to examine the…

A whole week was dedicated to fair partnerships and equitable exchange in Leiden-African education and research

The Municipality of Oss is a household name in the world of Dutch archaeology. For fifty years, Leiden archaeologists, in collaboration with residents of Oss, have been uncovering the history of the municipality. 2024 is the archaeological year of Oss! In a series of interviews we look back on fifty…

How can we reduce CO2 emissions from industry? Leiden psychologists Emma Mors and Christine Boomsma are examining the public perception and acceptance around the capture and storage of carbon dioxide. This is part of the ALIGN CCUS European research programme.

As an experiment, student Alicia Cai relied solely on AI tools such as ChatGPT and Claude for supervision while writing her thesis. What lessons were learned?

Cornelia Pabst is a PhD candidate at Leiden Observatory, whose research is based around primary data taken by instruments onboard SOFIA, an airplane-based observatory on which she has flown multiple times. Pabst explains how this airplane has impacted her research career and gives her views on the ever-present…

There is no such thing as the quintessential cybercriminal. It can be a Russian gang or the boy next door. What we do know is that cybercrime is an enduring societal problem that can affect every one of us. ‘We do not know enough about the criminals’, says Professor of Governing Cybercrime Rutger Le…

Good research means looking beyond disciplinary boundaries, said Professor of Molecular and Cellular Biochemistry Remus Dame in his inaugural lecture on 10 May. Processes that take place on DNA shouldn’t only be researched in a test tube but also in living cells, for instance.

Glorious sunshine, dozens of enthusiastic academics and huge numbers of Leiden residents ensured that this year’s special jubilee version of 3 October University was a great success.

Is it a prehistoric mammoth tooth or just an ordinary pebble? It was National Finds Day at the Dutch National Museum of Antiquities on Saturday 17 June, and Leiden University was one of the collaborating partners.

Wat betekent het om alumni te zijn aan de Faculteit der Rechtsgeleerdheid? Naast een maandelijks blad en een groot netwerk organiseert de faculteit ook jaarlijks het alumni-evenement ‘Leiden Revisited’. Wie zijn deze alumni en waarom blijven zij graag actief?

How do you achieve the structural change needed for a more inclusive university community? What challenges do female staff face in their careers and what does it take to be a woman in a leadership role? This is what over 40 female staff members from the university discussed on International Women’s…

From science to startup: How do you approach it? Why should you take your research to the market in the first place? And what obstacles will you face? ‘It takes time to find a company that matches your motives.’

Smiling faces, sweltering heat and a record-breaking donation – that was the Leiden Science Run 2025. On Saturday 21 June, the Leiden Bio Science Park turned bright orange as enthusiastic runners completed 4.5 kilometres to support research for vulnerable children.

In haar boek ‘Diensten met geheimen’ vertelt Willemijn Aerdts hoe de AIVD en MIVD te werk gaan. En ontkracht ze ook een paar mythes.

Lecturers had a week to move their courses online. An enormous challenge because remote teaching definitely wasn’t commonplace at Leiden University. Suzan Verberne, a lecturer and researcher at LIACS, shares her experiences. ‘I tried to do too much in my first week working from home.’

Three major research projects involving Leiden scientists have been awarded a grant from NWO’s Gravitation Programme. The projects are on innovation processes, organs-on-chips and quantum software.

Three quantum-safe cryptography methods have been standardised for worldwide use since this week. Léo Ducas co-designed the two primary PQC methods selected for this standardisation. Ducas is part of the Cryptology group at Centrum Wiskunde & Informatica (CWI) and is also professor of Mathematical cryptology…

Ward chose to focus on privacy and security because ‘it’s a topic that arouses other people’s interest, though sometimes frightens them, and I really enjoy taking the time to tell people about it’.

Did he dare take a gamble with his PhD research? Jeroen Methorst didn’t have to think long about it. It could fail or turn out very well. The latter is the case. Methorst developed a computer system that helps researchers find the protein they need. ‘Our whole group is now using this program.’ Methorst…

Ijeoma Uchegbu is Professor of Pharmacy at University College London (UCL). As a female scientist of colour, she was initially reluctant to play an active role in the university’s diversity policy. Until, that is, she had a radical change of heart: ‘I knew it; I had to become an evangelist.'

A large delegation composed of 11 delegates from institutes from the Faculty of Science has made an extensive visit to China and enhanced Leiden’s influence in the Chinese academia, industry and local government.

The Phase 3 clinical trial results of the promising Covid-19 vaccine of Johnson & Johnson are expected this month. The Dutch electron microscopy facility NeCEN helped develop the company’s vaccine, and they have now published their scientific findings in Nature Communications.

Radio telescope LOFAR maps the sky. It produces incredibly detailed images of the universe - and vast amounts of data. Huub Röttgering, director of the Leiden Observatory, talks about the challenges of working with those enormous datasets.

On the menu of the LLP Skills Café no beer and snacks, but communication skills as listening, resolving conflicts, and giving feedback. ‘Once you really learn to listen, you become a better leader and nicer friend.’

The Municipality of The Hague called on researchers to come up with a proposal for an innovative research project on problems big cities face such as energy transition. Four of the five projects that have been granted funding come from researchers from Leiden University.

Who doesn't love to turn on a horror film on a rainy evening? Fortunately, it is only fiction - or is it? According to university lecturer Evert Jan van Leeuwen, modern horror says more about our society than we think. He has been nominated for the Klokhuis Science Prize for his research into addiction…

How do digital technologies affect adolescent mental health and resilience? How do we foster a secure online environment? How should we deal with increasing rates of online crimes among adolescents? During the mini-symposium ‘The effect of the online world on adolescents’, presented by the interdisciplinary…

This is a call for papers for the upcoming tenth issue of the Journal of the Lucas Graduate Conference (JLGC), intended to be published by the end of this year.

Going to school during the summer holidays? Some of our students accepted the challenge. And they didn’t do that just around the corner. During their holidays, students bio pharmaceutical sciences and computer science visited special summer schools in China. ‘China is a global player that we should…

Environmental scientist Alexander van Oudenhoven has been chosen as Discoverer of the year of the Faculty of Science. Vice Rector Magnificus Hester Bijl announced this during the faculty’s New Year’s Reception on 10 January. Biologist Changsheng Wu won the prize for best dissertation of 2016. Computer…

Who will win this year's Teaching Prize of the Faculty of Humanities? On Thursday September 12th, we will find out during the faculty party in the Stadsgehoorzaal. Prior to the award ceremony you can come and listen to a mini lecture/HUM Talk of the four nominees in which they will give a sneak peek…

To look for atmospheres around planets outside our solar system is to look for extraterrestrial life. Astronomist Sebastian Zieba used data from the James Webb Space Telescope to study small rocky exoplanets but found no aliens yet. However, his findings are still very interesting for future observations.…

Mark Rutgers has been reappointed as Dean of the Faculty of Humanities. After a first term where the focus was mainly internal, it’s time to look outwards.

Many protoplanetary discs in which new planets are formed are much smaller than thought. Using the Atacama Large Millimeter/submillimeter Array (ALMA) scientists of the Leiden Observatory looked at 73 protoplanetary discs in the Lupus region.

The housing crisis is affecting a substantial group of Dutch citizens and is one of the main election themes this year. How did things get this far and what should the new cabinet do in the coming four years to address the problems? Three Leiden researchers give their answer.

For the first time, it was shown in living cells how the bacterium E. coli regulates genes that help it survive in a new environment. Biochemist Fatema Zahra Rashid managed to do this using a technique she fine-tuned. Her research into changes in 3-dimensional chromosome structure offers clues for ways…

How can you persuade researchers who are used to conducting research within clearly defined disciplines to adopt an interdisciplinary approach? Newly appointed distinguished professor Arnold Tukker explained.

Leiden Observatory has achieved a rare feat: two of its research teams have been awarded prestigious ALMA Large Programmes, allowing them to study how galaxies formed and evolved in the early Universe using cutting-edge telescope observations.

While tens of thousands of visitors dance to deafening music, a team of Leiden psychologists are trying to collect data for their research at Lowlands. How do festivalgoers experience a virtual trip? And what role do factors such as too little sleep and whether they have experience with psychedelics…

The socio-economic effects of climate change often do not receive enough attention. At the EuroScience Open Forum (ESOF) a group of researchers will provide more insight. How does climate change affect whether people work together or conversely end up as opponents? And what can we learn from societies…

Expats in the Netherlands receive a much warmer reception than other migrants, Leiden University's Aniek Smit has discovered. ‘But municipalities need to pay more attention to the differences between expats and the effects of their presence on other residents.' PhD defence 25 January.

An anatomical model of a heart, a mechanical digger or photos of mother and grandmother. Research interests and personal motivations have been given a place in the thirteen new portraits of women now on display in the Senate Chamber. ‘That cat isn't just a cute lap cat.'

Scientists in Leiden are looking for signals in blood samples to predict whether patients will develop serious COVID-19 symptoms or not. Based on that knowledge, they will be able to propose targeted therapies to prevent serious symptoms. They hope to come up with the first results within the week.

Populist parties in national parliaments have a different style of working from their colleagues in other parties. They often vote against Cabinet proposals, but do not ask more questions about Cabinet activities. This is the finding of Leiden research in different European countries.