A common assumption in chemistry is that the coordination number of a catalyst's surface determines the reactivity of the reaction it catalyses. Strikingly, Leiden chemists have now proven that this is not true for nature’s most simple chemical reaction: the dissociation of hydrogen. The researchers…

There’s a Stone Age house at Broekpolder, near the city of Vlaardingen. It wasn’t built by prehistoric people but by modern archaeologists from Leiden University and volunteers from a local initiative known as Broekpolder Federation. They used replicas of Stone Age tools, such as stone axes and chisels…

The SpaceEU project, coordinated by Leiden University, has launched an online toolkit with a collection of space-centred activities that engage people with the wonders of space. The toolkit is targeted at girls and underrepresented communities and can be used by schools, youth centres, museums, NGOs…

The latest research from the Leiden outdoor laboratory ‘Living Lab’ shows that the insecticide thiacloprid strongly influences even the most common and robust dragonfly species in the Netherlands. The study was published in the Journal of Applied Ecology.

Dear friends of the NVIC,

Psychologist Ellen de Bruijn studies the effects of hormonal fluctuations on behaviour and on the brain over a woman's life course. With an ERC Consolidator grant, she and 3 PhDs and a postdoc will further her EEG research on the different stages at which girls and women experience strong hormonal f…

Last week, the sad news reached us that Dr Jan Schmidt passed away on 11 August 2025. We wish his partner, friends and family strength and comfort as they cope with this loss. Jan Schmidt will be remembered as one of the most prolific and learned scholars in the field of Ottoman codicology and histo…

A Leiden Groningen student team has reached the European finals of the BISC-E competition. In this annual competition students have to come up with a sustainable solution to a major social problem. The team invented Suckerspheres: a natural alternative to the plastic microbeads that are still widely…

The students at Leiden University are satisfied with the online teaching that they received in the second semester of the 2019-2020 academic year. They were more satisfied with the teaching that imparted knowledge than with the teaching that focused on applying knowledge. These are the results of a…

Virtual reality is increasingly being studied in therapeutic contexts. While most studies have focused on adults, children may also stand to benefit. PhD researcher Nina Krupljanin is investigating how young people experience virtual environments – and the findings are encouraging.

Classical and Mediterranean archaeologist Tymon de Haas is a relatively recent addition to the Faculty of Archaeology. Succeeding Tesse Stek in September 2018, he has played an important role in teaching since then, working together with colleagues from multiple research groups. ‘I have my corner of…

On 2 September 2019, the Constitutional and Administrative Law Department of Leiden Law School and Review of European Administrative Law REALaw are organising a Conference on the Europeanisation of national administrative law through general principles of law: from resistance to voluntary adoption. Subsequently,…

A team of students from Leiden and Groningen took the second prize at the European final of the BISC-E sustainability competition. Last June, the team had already won the Dutch finals. The students came up with ‘Suckerspheres’, a natural alternative to the plastic micro-particles that are still frequently…

Bart Schuurman, Assistant Professor at the Institute of Security and Global Affairs in The Hague, has received a Veni grant which will allow him to continue his research into the radicalisation of terrorists for the next three years. ‘In order to better understand terrorists, I will focus on the large…

He teaches, as he puts it, the ‘most brutal class’ at Leiden University College (LUC). Despite this, David Zetland’s students have nominated him for the LUS Teaching Prize. We asked him why he thinks this is.

New housing in old labs and striking architecture for University buildings and high-tech companies, not to mention waterside parks. An exhibition in Oude UB shows the radical changes that are in store for the Leiden Bio Science Park over the coming years.

It is with deep sorrow that we share the news that our dear colleague Andrea Evers passed away on Monday, 4 August 2025. Since 2013, Andrea had been affiliated with the Faculty of Social and Behavioural Sciences at Leiden University as Professor of Health Psychology. She was an undeniable driving force…

The Institute of Biology Leiden has a new visiting professor as of the first of May. Bioinformatician Marnix Medema holds the Van der Klaauw chair for a year and looks forward to scientific collaborations and to boost the bioinformatics education.

In 1960, not one but 17 African countries became independent. Sixty years later the African Studies Centre Leiden (ASCL) is offering a wide programme to mark this celebration. African Studies itself proved to be a topic of conversation at the kick-off conference on 30 January.

Over 170 SUNRISE’s stakeholders gathered on June 17-18 at the Academy Palace of Brussels, in connection with the EU Sustainable Energy Week, as one of the Energy Days. Renewable energy experts from Academia, Industry and Policy addressed the current state of the initiative and its priority research…

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…

The ILS Lunch Seminar of April will take in a slightly different format, as we have the honour of receiving Dr Leandro Mancano from the University of Edinburgh. He will present his most recent monograph on the European Union and the deprivation of liberty.

During the Faculty of Science New Year's reception, Daniël Rozen was named Discoverer of the year 2015. Nienke van der Marel and Koen van der Maaden both won the prize for the best dissertation and Jeroen van Smeden was named Best Teacher of 2015.

In the summer of 2021, Lucy Opoka was awarded one of the coveted Meijers PhD positions. In October, she arrived back in Leiden, where she obtained her LLM degree Advanced Studies in International Children’s Rights in 2019. Professor Liefaard interviewed Lucy upon arrival.

Criminology students Simone Kruijt and Noor Hekker conducted research into cybercrime in Leiden and presented their findings to the regional police and an enthusiastic Mayor Lenferink. The conclusions call for a new approach, said Lenferink.

The government is digitalizing and making use of ‘big data’ in its decision making processes. But the expectations of digitalization are often overly optimistic, according to Bram Klieving, Professor Digitalization and Public Policy. Klievink is about to start with multidisciplinary research looking…

The brightness peak of the ring around M87's supermassive black hole has shifted 30 degrees counterclockwise in a year. This is shown by new images released by the Event Horizon Telescope consortium.

Finally we know for sure that there is a black hole at the centre of our own galaxy. Today, astronomers unveiled the first ever photo of Sagittarius A*, a super-massive object at the centre of the Milky Way. This picture could only be taken thanks to the cooperation of telescopes worldwide.

Leiden alumnus Luc Amkreutz is a curator at the National Museum of Antiquities. His exhibition about the submerged landscape of Doggerland highlights what we can learn from prehistory. ‘Just like the people of Doggerland, we are confronted with climate change, but we are responsible for the speed of…

The Military Information and Security Service (MIVD) prevented a Russian hacker attack on the Organisation for the Prohibition of Chemical Weapons (OPCW) in The Hague. Scientists Paul Abels, Willemijn Aerts, Constant Hijzen and Sergei Boeke of the Institute of Security and Global Affairs responded to…

Keynote speakers: Jennifer Gaynor (University at Buffalo SUNY) and Sue Peabody (Washington State University)

Feeling good doesn’t just lift our mood—it also helps us stay flexible and resilient. A new study by an international team of neuroscientists shows that natural brain opioids released after rewards play a key role in broadening attention, offering fresh insights into stress, cognition, and well-bein…

In an innovative study, Radboudumc and LUMC jointly tested a candidate vaccine based on a genetically weakened malaria parasite. The results of this clinical trial, published in Science Translational Medicine, show that the vaccine is safe and elicits a defense response against a malaria infection.

This week the Turkish army invaded North East Syria. The Turkish invasion might well have had an unintended side effect: the escapement of thousands of Islamic State terrorists held in captivity. Experts on terrorism and politicians fear a resurrection of the terror group.

The acquittal of Richard de Mos and his fellow party member has caused quite a stir in the Netherlands. Can De Mos simply return to local politics now? And has the issue finally been settled?

As of this month, Kim Bonger has been appointed Professor of Chemical Biology. As a first-generation academic, she’s especially grateful. ‘I wasn’t exactly a top student at school. I never could’ve imagined this.’

It is time for the international community to put a stop to war crimes – especially against medical personnel, argued international chair of Doctors Without Borders Joanne Liu in her Cleveringa lecture.

LUCIS organiseerde op woensdag 4 maart een speciale avond over journalistiek in Irak. Journaliste Judit Neurink en programmamaker Sakir Khader vertelden over hun ervaringen en recente werkzaamheden in het land. De avond stond onder leiding van Wendelmoet Boersema (politiek redacteur van dagblad Trou…

From telescopes to science fiction: in just one semester, students with no background in physics or astronomy get to explore the universe. The first group of students started last month in the new minor Our Universe.

In terms of the breadth of their vocabulary, many Dutch rappers can easily match leading authors. This is the surprising conclusion drawn by language researcher Alex Reuneker on the basis of comparative research. Rapper Brainpower and author Ilja Leonard Pfeiffer will debate this issue on 16 September…

Exactly 5 years ago LUC The Hague officially opened its doors with a ceremony in Theater Diligentia. This year we will celebrate our first lustrum in the same theatre on the 10th of October but we shouldn’t forget that today, the 29th of September, is LUC’s official birthday. Our Educational Director,…

From sleep problems to suicide attempts: the consequences of bullying can be very serious. The National Day against Bullying (in the Netherlands 19 April) is the opportunity for Leiden psychologist Mitch van Geel to share some recent insights from his research.

Artificial Intelligence is likely to have far-reaching consequences for all actors in the realm of academic publishing, including authors, editors, researchers, and readers. This symposium aims to foster the conversation about the various ways in which we evaluate, enrich, and disseminate academic knowledge,…

‘Wonder is the beginning of insight. Don’t let that academic curiosity erode.’ This was Jan Anthonie Bruijn’s call to administrators and funding bodies in his valedictory lecture.

Would you like to do collection-oriented research, but do not have sufficient resources? Every year, the Museums, Collections and Society (MCS) research group makes several research scholarships available for this purpose. Researchers Elizabeth den Hartog and Marika Keblusek previously received an MCS…

By looking at what is different, researchers often discover the special, the unusual. And that has already brought a wealth of highlights – also in Leiden.

The spectacular “density” of artworks and architecture in Florence, a designated UNESCO World Heritage site (1982, 2015), reflects a nucleus of some of the most important collecting histories and museums in the world, ranging from the unparalleled Renaissance acquisitions of the Medici dynasty to the…

With the necessary measures, researchers restart their work in various laboratories. The Leiden Cell Observatory is one of the places where scientists resume their lab work.

A consortium of research infrastructures focused on water quality has received €4.18 million in funding from the Dutch Research Council (NWO). This grant will support the transformation of outdoor laboratories at Leiden University, NIOO-KNAW, Radboud University, and Wageningen University & Research…

Leiden astronomy Master's student Arend Moerman has received an A+ for his thesis research on the simulation of chaotic interactions of three black holes. The simulations, which he carried out together with his Leiden and Oxford colleagues, show that lighter black holes tend to slingshot each other…