The International Day of Light (IDL) celebrates the ubiquitous role light has in our lives. From Argentina to South Africa, Japan and Pakistan, several events have taken place across all continents on May 16. The date is a token for people around the globe to connect with the importance of light in…

Money worries can vary from person to person and be about different things: for instance, energy bills, healthcare costs or household spending. The new National Money Worries Monitor wants to gain more insight into the money worries and financial vulnerability of the Dutch population.

Welcome to the WIIS NL community! We are excited to be launching our newsletter in the week we celebrate International Women's Day.

There is no time to lose when it comes to repairing damage to nature. For that reason and to show that the European Commission is neither a ‘bogeyman’ nor an enemy, European Commissioner Frans Timmermans came to the Dutch House of Representatives to talk with Caroline van der Plas, leader of political…

When mosquito eggs hatch in nutrient-rich water, the mosquitoes are larger and they can also fly further. That is the first conclusion of a study from by the Netherlands Centre for One Health (NCOH) by PhD-student Sam Boerlijst.

The Leiden Bio Science Park (BSP) will become a real campus in the coming years, with more houses, and attractive places where scientists, students and entrepreneurs can meet to discuss their plans.

LUMC Campus The Hague will be contributing to the health of the inhabitants of The Hague with research, teaching and a training programme for GPs. The new campus is an initiative of the LUMC, Leiden University, the hospitals in The Hague, the Area Health Authority and the municipality of The Hague.…

There are effective treatments for people with autism, says Wouter Staal, professor of Autism Spectrum Disorders, in his inaugural lecture on 4 May. However, it is not yet clear which treatment is most effective for which individual.

On January 11, 2025, our esteemed colleague and emeritus professor Arne van der Gen passed away. Arne was a professor of Organic Chemistry from 1980 until his retirement in 2000, and was a great advocate of the integration and harmonization of European education in chemistry. Arne was 90 years old.

It is multi-media month for master’s students in Journalism and New Media. This means they are on the streets, armed with pen and paper or tablet, smart phone and camera. In the ‘Leiden Neighbourhoods’ project, master’s students are giving their perspective on local area news for the Leidsch Dagblad,…

Tropical butterflies adapt to their environment to improve their chances of survival. The changes are triggered by hormone signals that transmit information about temperature to the butterflies' tissues. Biologist Ana Rita Mateus shows how a complex combination of environment, physiology and genetics…

Elon Musk managed to foil a strategic Ukrainian drone attack with the push of a button. It clearly shows that democracy is hanging by a thread, says Associate Professor of Constitutional Law at Leiden University and Professor of Digitisation and the Democratic Rule of Law at the Open University, Reijer…

We asked a lot of everyone last year. The Personnel Monitor showed that the workload was high in 2022 and Covid took its toll. I therefore think everyone deserves some downtime. Time away from the daily grind.

Maritime archaeologist Martijn Manders has been appointed professor of Underwater Archaeology and Maritime Cultural Heritage Management at Leiden University. He will combine his new appointment at the Faculty of Archaeology, which began on 15 July 2022, with his current position at the Cultural Heritage…

It's pretty hard to spot a single 5 nanometer particle. Leiden physicists pulled it off by turning a 120 nm gold rod into a detector.

A secret code that we currently use to send e-mails securely is based on the maths of a century ago. The geometrical surfaces that Dino Festi studied during his PhD research will perhaps be used in future codes or new physics. PhD defence 5 July.

‘It was a discovery we did not expect,’ says Remko Offringa, professor of Plant developmental genetics. Today he publishes a new trait of a versatile gene in Current Biology: it makes the difference in plants between herbaceous and woody stem growth. A useful feature to prevent dehydration.

Leiden researchers have developed a new method of determining the geographic origin of humans. Archaeologist Jason Laffoon and his team used the technique to discover where precolonial pioneers in the Caribbean region came from.

Physical chemist Rik Mom developed a revolutionary way to investigate catalysts in action in detail. For this work he received the distinction cum laude during his PhD defence on 29 June.

A lot is going on in the world right now, and our university regularly faces big issues and dilemmas too. Then it can be tricky to switch off. For me, exercise is a way to unwind. We want our staff to be able to relax too and are therefore offering various events and workshops that should help.

In a significant step toward restoring cultural heritage, PhD candidate Marie Kolbenstetter has played a pivotal role in repatriating a collection of 133 archaeological artefacts from the prestigious Musée du quai Branly in Paris back to their place of origin in southern Honduras. Her efforts underscore…

Specific fatty acid-sugar molecules allow leprosy bacteria, among others, to hide from our immune system. How exactly is not entirely clear. Hessel van Dijk, who received his PhD on 13 October, replicated the molecules, helping to solve a piece of the puzzle. Van Dijk's dissertation is titled: Synthesis…

The 289 students who recently moved into the tower on Kolffpad at the Leiden Bio Science Park are sitting pretty. A self-contained unit in the middle of the campus yet surrounded by green, with a launderette, games room and study area on the ground floor, and, coming soon, a branch of Coffee Star.

From the research Terrorist threat in the Netherlands, the risk perception and opportunities for risk communication (Leiden University) shows that the Dutch respond relatively sober to attacks in neighboring countries and the possible risks of a terrorist threat. Half of the respondents believe that…

Developing a digital guest lecture for high school students. Jan Sleutels was immediately enthusiastic when he got asked to do this. The end result? Together with his colleague Maarten Lamers, he created the guest lecture 'Thinking about Artificial Intelligence'.

Researchers at Leiden University have made a breakthrough in the study of the hereditary Pompe disease. Together with colleagues in York, they have developed a molecule that binds to the enzyme that is key to the progress of the disease. The findings have been published in ACS Central Science.

Interdependence, cooperation and strategic autonomy: A (legal) view from the EU

For some devout Muslims, going to the cinema or viewing certain images is provocative and problematic. Ahmad Nuril Huda investigated the development Santri (young, pious Muslims) have undergone in this field over the past ten years. The Cinematic Santri is the result of his PhD research.

The Mechanisms Of DEMentia (MODEM) research project has received a €5,9m grant from ZonMw. Within this collaboration, several parties, including the Leiden University Medical Centre (LUMC), will conduct research into the causes of dementia.

Hosted at the Netherlands Institute in Morocco (NIMAR) in Rabat on 26 and 27 October, 20 junior and senior empirical researchers who all work on migration in Morocco came together to discuss two important topics that are frequently neglected in migration scholarship. The researchers were from different…

EL CID has started! This is the week when new students have the chance to get to know the city and student life. Some of the mentors and first-years introduce themselves.

The scientific world is under increasing pressure from all directions: the money that society invests has to show clear returns. ‘The best thing we can do is to go along with this development,' says Ivo de Nooijer, Director of Luris, Leiden University's valorisation institute.

Each year, poppies disperse seeds that grow into a new generation of flowers. Sometimes, some of the seeds postpone their germination for a few years, for example when they’re covered by a layer of sand. Only when the sand disappears, do they start to sprout. Margriet Oomen did mathematical research…

At a festive gathering, 25 projects were awarded a Kiem grant 2025 - 2026 of 10,000 euros. Interdisciplinary teams from Leiden University will conduct innovative research into horror, international payments and fungi in historical collections, among others.

Traditional leaders in many African countries have regained some of their former powers. Politicians and companies in some of these countries manage to gain access to valuable land via these leaders, at the cost of the local population. This is the message of Professor of Law, Administration and Development…

Sara Brandellero, Assistant Professor in Brazilian Studies (LUCAS), is a founding member of the newly launched European Network of Brazilianists working in Cultural Analysis/Rede Europeia de Brasilianistas de Análise Cultural – REBRAC. Network launched at international conference at the University of…

PhD students Alex Brandsen and Wouter Verschoof-van der Vaart are both doing a project within the university’s Data Science research programme. The are introducing terms like ‘text mining’ and ‘advanced machine learning’ into archaeology. ‘These techniques will make archaeology more efficient and ch…

Nanoparticles that transport medicines to a specific part of the human body are usually broken down in the liver prematurely. Jeroen Bussmann from Leiden University has discovered a new method to prevent this from happening. Publication in ACS Nano.

The way in which written language is processed in the brain is a hot topic in cognitive research. Cognitive psychologist Rinus Verdonschot studied a Japanese script in which a single character can have up to three possible pronunciations. He discovered that all three are simultaneously activated in…

North Korean detention camps are no different from Nazi prison camps. But as long as the country remains economically isolated, international criticism will be ineffective, writes North Korea expert Remco Breuker in the opinion section of Dutch newspaper NRC on 21 February. Breuker advocates using the…

Sylvia van Beugen has won the Herman Musaph Literature award 2016 for the best publication about psychodermatology. Her publication describes the importance of body awareness in chronic skin conditions, such as psoriasis.

The logo of Leiden University, with letters as small as a bacterium. Researchers from LUMC and the Institute of Biology have created the smallest logo of our university ever produced. It is a piece of fun with a serious real-world application: the new microscope with which the logo was made allows scientists…

This Autumn a group of young asylum seekers will attend the course ‘Know Your Rights’, which is being developed by Pro Bono Connect, New Dutch Connections, law firm DLA Piper and the Leiden Law Clinic. For this course we are looking for 20 jurists who are willing to coach the asylum seekers.

The Casimir Research School is to receive an € 800,000 subsidy from the NWO Graduate Programme to further integrate the master's study and PhD research. Minister Plasterk judged the Leiden-Delft Casimir plan to be one of the best.

On 26 November 1940 Professor Cleveringa held his courageous speech protesting against the dismissal of his Jewish colleague, Professor Meijers. Cleveringa was arrested and the university was closed. Every year the university honours Cleveringa with a chair and meetings throughout the world.

The price of products and services plays an enormous role in society, and therefore also in the legal domain, according to Professor of Business Studies. Inaugural lecture 2 June.

Leiden chemical biologists led by Dr Mario van der Stelt have developed a method to facilitate the search for new drugs. This method has allowed them to take an important first step in the development of a drug against obesity.

‘The Hague is rapidly developing to become a knowledge city and Leiden University is making an important contribution to this development.' These were the words with which alderman Joris Wijsmuller opened The Hague Day of Architecture on Saturday 20 May 2017. Wijnhaven was the focal point of the day…

The state should prepare 'lifers' better for returning to society, for example by giving them some control over their own lives. This is the finding of Marieke Liem in her book 'After Life Imprisonment', published on 19 August.

Leiden Professor of Translational Rheumatology Hans Ulrich Scherer has one foot in the clinic, where he helps patients, and the other in the lab, where he supervises researchers. He bridges these two worlds in his hunt for autoimmune rheumatic diseases.