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…

Human resources

From games to scavenger hunts: museums already do all sorts of things for children. But how do children really look at art? Do paintings affect them more if they receive information that is specially tailored to young visitors? Join psychologist Francesco Walker at the Rijksmuseum in Amsterdam and see…

‘A challenging rollercoaster, but also a very bonding and insightful experience,’ that’s how the team of iGEM Leiden 2022 wraps up their participation in the iGEM contest. The contest for synthetic biology climaxed during the Grand Jamboree in Paris. The team ended up in the top 10 of over 360 teams…

In May 2022 Lennart Kruijer succesfully defended his PhD, which he wrote as a member of the VICI Project ‘Innovating Objects’, led by prof. Miguel John Versluys. So succesfully, in fact, that he was awarded the Cum Laude honors. Just a short time later he was awarded a grant and a fellowship to further…

Being rejected always hurts, but so does having to reject someone. Social psychologists have discovered that at interviews to select suitable housemates students dehumanise candidates to make it easier to reject them. That may sound harsh but, according to the researchers, it is also logical.

What looked like an ordinary coot’s nest turned out to be a five-star location with a remarkable backstory. Beneath a jetty on the Rokin in Amsterdam, biologist Auke-Florian Hiemstra discovered a true time capsule — complete with face masks from the COVID era and a Mars wrapper dating back to the 1994…

The League of European Research Universities (LERU) was launched in Leiden 20 years ago. This anniversary will be celebrated with a major conference (19 – 21 May) on an urgent theme: How does science contribute to sustainable and resilient societies? We put this question to Kurt Deketelaere, Secretary-General…

The challenges of building a sustainable society are unprecedented. But the Dutch municipalities cannot be faulted for their commitment. They are working hard, conclude Professor Eefje Cuppen and Lian Merkx, programme manager for energy at the Association of Netherlands Municipalities (VNG). To exchange…

‘Walking around in a new environment activates our brain’s learning centre. This allows us to learn better, even once we’ve returned to a familiar environment.’ This is the conclusion drawn by neuroscientist Judith Schomaker in her recent publication in Neurobiology of Learning and Memory.

Four PhD researchers of Leiden University have been selected to participate in the Europaeum Scholars Program 2022-2023. Two of them, Lena Riecke and Sophie Vértiter, are doing their research at ISGA. Time for a introduction.

'It gave our team a big boost to hear that our work was valuable,' says medical chemist Elmer Maurits about the moment they won the Venture Challenge. With their company Iprotics, they want to develop a drug that can better treat patients with autoimmune diseases and blood cancers. 25,000 euros of prize…

In the new ‘Educatips’ column, Psychology lecturers share their most important lessons about teaching. This month: Elise Seip wants to help students get out of their head and into their body. She starts every work group with mindfulness.

How can parents avoid passing on stress and mental health problems to their children? Professor of Stress-Related Psychopathology Bernet Elzinga develops simple interventions to help both parents and young people. For her research, she has been awarded the Spinoza Prize, the highest academic honour…

‘Everyone’s talking about it, everyone thinks everyone else is doing it, but the reality is disappointing,’ says biochemist Gerard van Westen in his 3 October University lecture in the Van der Werfpark. In the full marquee, he gets a laugh with this suggestion that artificial intelligence is comparable…

Over 20,000 students, lecturers, administrators, support staff and many others protested on 25 November against the plans to make billions of cuts to higher education. Students and staff from Leiden University also travelled to The Hague to voice their objections to the disastrous plans.

During the award ceremony of the Christiaan Huygens Prize on 16 October, mathematician Rosa Schwarz received an honourable mention. Schwarz, former PhD candidate of the Mathematical Institute, received the mention for her dissertation ‘Logarithmic approach to the double ramification cycle’.

White clouds of ice-cold gas flowing across the floor. Magical, but be careful not to freeze your fingers off. We are of course talking about liquid nitrogen and helium. You may have seen the spectacular Freezing Physics science show by the student organisation Rino. But did you know that this commodity…

Leiden physicists Alexandre Morin and Samadarshi Maity study self-organisation and flocking phenomena. They shed light on flocking, which helps to understand how it is possible that birds in a flock don't collide. With plastic microbeads, they create an experimental setup and they developed a mathematical…

Fifteen knowledge institutions and the Ministry of Education, Culture and Science have signed the covenant for Open Science NL. Leiden University has also joined the covenant, via the Universities of the Netherlands. This marks the start of the Dutch Research Council’s and brings the transition to open…

Search engines are getting better at answering our questions. And chatbots are increasingly likely to search the internet for relevant sources. ‘Search engines and chatbots will become more closely entwined’, says Professor Suzan Verberne.

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…

This week, Leiden University bade farewell to Henri Lenferink, who is retiring after 20 years as mayor of Leiden.

Seven researchers from Leiden University have made a successful application to the Open Competition SSH (Social Sciences and Humanities) XS, a Dutch Research Council pilot programme.

Leiden University is under fire: it is allegedly doing too little to tackle antisemitism. Rector Hester Bijl responds to this accusation and to a video from 2014 on social media in which extreme remarks are made. ‘We can be short about such comments: they are unacceptable. The university is and always…

Two Second Prizes, two First Prizes and even a Grand Grand First Prize. Five Leiden mathematics students and their team leader have performed exceptionally well during the International Mathematics Competition for University Students 2024 in Bulgaria in early August. This even made for a Dutch recor…

In court, victims of violent crime and sexual offences are permitted to comment on the defendant’s guilt and the sentence to be imposed. But legal experts believe this allows them to influence the judge. Lecturer Joyce Schot has received a Meijers PhD grant to investigate whether the right to speak…

A celebration was held in the Tabú restaurant: Mark Rutgers, Dean of the Faculty of Humanities, was presented with the first copy of LEAP, a journal where Humanities master’s students can prepare for an academic career by publishing articles themselves.

A team led by Leiden University in the Netherlands and the National Radio Astronomy Observatory have, for the first time, robustly detected semi-heavy water ice around a young sunlike star. In this ice, some of the ordinary hydrogen atoms have been replaced by deuterium, a heavier variant of hydroge…

Nathaniel Martin, Professor of Biological chemistry, wondered what would happen if you take an antibiotic that has been known for 70 years and try to improve it with the latest tools of modern chemistry. Turns out it can become up to a hundred times more potent and prevent the growth of some drug-resistant…

Leiden scientists and companies receive 1.37 million euros to develop technology for the Einstein Telescope. This underground telescope will measure gravitational waves and must therefore be extremely sensitive. To that end, the consortium conducts research on the damping of vibrations at temperatures…

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…

With a self-converted red camper van, biologists and twin brothers Kevin and Marvin Groen go on a nature adventure in Eastern Europe. Together, they search for wild animals, beautiful nature and places to sport. From a long search for a bear in the Slovakian wilderness to the discovery that pelicans…

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

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

Freezers set three degrees higher, a recycling bin for plastic petri dishes or timer switches installed on equipment: a growing number of Leiden University laboratories are taking small – but effective – steps to reduce their environmental impact, via the internationally recognized Laboratory Efficiency…

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…

That the tax authorities are allowed to impose taxes is widely known. What is less well known is when the tax authorities must impose taxes. And what to do when one set of regulations requires the tax authorities to impose taxes while other regulations prevent them from doing exactly that? Vergouwen’s…

Neanderthals were able to outwit straight-tusked elephants, the largest land mammals of the past few million years. Leiden professor Wil Roebroeks has published an article about this together with his German colleague Sabine Gaudzinski-Windheuser in the Science Advances journal.

LUMC Curium and the Dutch National Youth Council (NJR) have been working on integrating young people’s lived experiences of mental health problems in medical research and training. The aim is to broaden doctors' and researchers’ perspectives and improve the care offered.

How do you ensure a healthy work balance when the workload increases exponentially overnight due to a pandemic? Head of IT and Facilities Marjana Rhebergen and Information Manager Rob Goedemans, together with their colleagues, had to manage the sudden switch to online education. They talk about their…

Former President Kgalema Motlanthe of South Africa gave a public lecture on Campus The Hague on 7 July. His story was about the economic transformation of Africa.

Ana Oleart came to The Hague from Barcelona to study for her bachelor's degree in International Studies. After completing no fewer than two master's degrees at Leiden University, she now works in the HR department of a large hotel chain.

Limburg lawyer Roger Cox has caused a legal revolution. With high-profile cases against the Dutch state and Shell oil company, he transformed the law into a tool to enforce climate policy. Leidraad alumni magazine spoke to him about a life defined by radical choices for a better world.

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

Thirteen teams of inventive staff rose to the challenge of creating brand-new AI applications to lighten their workload during the AI Cocreation Lab. At the closing ceremony in the Academy Building, participants showed their pitch films, and an expert jury announced the winning prototypes.

Monica den Boer, who has decades of experience within police and defence and was also active as a Member of Parliament (D66), has been appointed extraordinary professor of Police Studies.

Over hundreds of thousands of years, our region witnessed the comings and goings of various types of hominin. This depended on the temperature as ice ages alternated with warmer periods. In ‘De eerste mensen in de Lage Landen’ (‘The First Humans in the Low Countries’) Leiden archaeologists Yannick Raczynski-Henk…

Alumnus Ben Smulders has worked for the European Commission for the past 33 years. ‘The discipline and depth that I experienced during my student days has helped me through various stages of my professional career.’

The Netherlands in September 2021 could be characterised as a low-trust society. Trust in the government has declined significantly in the past one-and-a-half years: from almost 70 percent in April 2020 to less than 30 percent in September 2021. There has also been a slight decrease in trust between…