Around 1,300 Leideners found 2,265 species during the Expeditie Stadsnutuur urban biodiversity inventory. ‘It’s been a huge success’, says scientific coordinator Frederic Lens.

An X-ray scanner, some small metal balls, and a newly developed algorithm. That is all you need to make a 3D model that enables you to look inside art objects without dismantling them. Thanks to the research of Francien Bossema (Centrum Wiskunde & Informatica and Leiden Institute of Advanced Computer…

Caribbean literature holds a unique position in the world. Literature produced in the Caribbean region is extremely diverse, not only because of the wide variety of languages spoken, but also due to distinct colonial legacies that exist in the archipelago. Despite cultural specificities, the region…

After a gap of five years, Leiden has a new Professor of Modern China. Florian Schneider started his position on 1 September.

Public agencies are keen to use new technology such as AI to speed up their primary processes. But the internal organisation is often a major stumbling block. SAILS researcher Friso Selten conducts research at the interface between data science and public administration.

Why do some smokers quit much more easily than others? Can we think ourself to insomnia? And does playing music together help to calm conflicts? Psychology students investigated these questions and presented their findings during the Psychology Science Day 2023.

Sieger van den Aardweg is Knowledge Base Manager for the Grant Development Team at the Strategy and Academic Affairs Directorate, part of Administration and Central Services. He is working within the Leiden Research Support programme on tailored information provision, in collaboration with several institutes.…

Better supervision of PhD candidates, clear guidelines on career paths and an MRI scanner that can be accessed by all researchers: these are the recommendations from the new self-evaluation. Colleagues say: ‘This forces us as an institute to formulate our mission and vision more precisely.’

Clear information about support services, a well-being self-test and advice on finding a room. YounginLeiden.nl helps students and other young people get started, literally and figuratively. Why is this site so desperately needed?

Lichens enthusiast Sander van Zon was eager to use his knowledge for his internship. He wrote an excellent thesis on lichens’ biodiversity in the city, of which his first scientific publication will appear soon. With it, he is nominated for the Leiden Science Young Talent Award 2022.

Terracotta pottery, precious ikat fabrics and the bazaars where these goods are sold: all these can be seen in a new Louvre film premiering on Friday 9 December. University lecturer Elena Paskaleva collaborated on the film Uzbekistan a timeless journey in Central Asia about Uzbek artefacts.

In a packed Stadsgehoorzaal, philosopher and Member of the Senate Daan Roovers delivered the 54th Huizinga Lecture. It was a passionate plea for a form of politics thatt is not only about winning, but also about talking and playing.

A boost to self-confidence and clarifying; this is how participants experience the new-style Annual Interview. The approximately 40 interviews conducted, used 360-degree feedback and an updated Result & Development form. Hanneke Hulst: 'I hope other units also dare to take the leap.'

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.’

Conference

On Things That Talk, a website founded and developed by Fresco Sam-Sin, students and researchers describe objects from today and from long ago. By now, more than a hundred objects have been covered. Willemijn Waal, Emma Verweij and Frank van den Boom contributed to the content.

Izra ter Weer's mother had studied English Language and Culture in Leiden and was always so enthusiastic about her studies that Izra decided to follow in her footsteps. After completing a Master's degree in Linguistics, she now works as a consultant at strategic consultancy firm Sprenkels and organises…

Dr. Josien de Klerk, Associate professor in Global Public Health at Leiden University College The Hague recently published some of her work on HIV/AIDS. In collaboration with a team of interdisciplinary researchers from the Amsterdam Institute for Global Health and Development she came to the conclusion…

From malaria parasites as a vaccine to how top-level bureaucrats reach their decisions: seven researchers from Leiden University have received a Vidi grant from the Dutch Research Council (NWO). This 800,000-euro grant will enable them to develop their own innovative line of research over the next five…

Professor Jan Willem Erisman is happy with the freedom at our University. But frameworks are needed, he believes. That is why he makes a proposal for such a framework from the perspective of his own profession. In fact, he makes a proposal for a wonderful ambition for Leiden University.

With the help of the JEDI fund, Fatima al Moufridji and Thijs Porck went in search of cultural contacts between early medieval England, Northern Africa, and the Middle East. Together they made four knowledge clips that can now be seen on YouTube.

An international team of astronomers has discovered a large reservoir of hot gas in the cluster-in-formation around the Spiderweb Galaxy. Based partly on that hot gas, the astronomers predict that the cluster-in-formation will grow into one of the largest objects in the universe. A step closer to discovering…

The steady decline in lethal gun violence in the EU came to halt in 2012 and some countries, such as Sweden, have even noticed an increase since then. An arms race among drug criminals and an increase in the availability of illegal firearms could lead to more criminal and gun violence. This is one of…

How do you detect people at high risk of heart attacks and strokes? And how can we improve the treatment of atherosclerosis? These are the questions that keep LACDR researcher Marie Depuydt busy. She is investigating the immune cells that contribute to the worsening of atherosclerosis. ‘It's a challenging…

Leiden University will award two honorary doctorates at its Dies Natalis on 9 February 2026. They will go to internet studies scholar Safiya Umoja Noble and philosopher Catherine Malabou.

How to strengthen mutual trust between agencies in the criminal justice system and youth with a migration background or weaker socio-economic position. The Netherlands Science Agenda has awarded 1.5 million euros to a consortium to find out.

Dr. Joana Cook and Dr. Graig Klein, assistant professors at the Institute of Security and Global Affairs of Leiden University, have been awarded a Google Trust & Safety Research Award for their project Countering Violent Extremist Content Online: A Multidisciplinary Approach.

An escape room gave staff the chance to test their knowledge about cybersecurity at work. Would they manage to defuse the bomb in time without falling for the phishing emails or causing a data breach?

The supermassive black hole at the center of the Circinus galaxy is being fed with gas by two spiral arms. This is what PhD candidate Wout Goesaert discovered. But only a small percentage disappears into the black hole, the rest is ejected.

Grondstoffen werden vroeger over duizenden kilometers afstand vervoerd. Waarvoor werden ze geruild en waarom sloten mensen in West-Azië zich aan bij deze handelsnetwerken?

Fewer CO2 emissions, less airborne viral transmission, and a more sustainable form of food production: seven consortia of researchers and societal partners will put a budget of 32 million euros towards developing technological innovations. Important Leiden research on circular electronics by Prof. Dr.…

James Webb life’s building blocks

The Dutch phrase ‘ijs en weder dienende’ (literally, ‘ice and weather serving’) is a good example of what is known as a participle clause and is perhaps one of the most unfathomable grammatical constructions in Dutch. For what (or who) is serving whom (or what)? It actually means ‘ice and weather permitting’.…

On Thursday, May 16, Leiden University Libraries is organizing a workshop on early photography of the Middle East. In the workshop, curator Maartje van den Heuvel shows photos of three adventurous Dutch nineteenth-century travel and photography pioneers. They created beautiful photos and photo albums…

An international team of astronomers led by Matus Rybak (Leiden University) has proven, thanks to accidental double zoom, that millimetre radiation is generated close to the core of a supermassive black hole. Their findings have been accepted for publication in the journal Astronomy & Astrophysics.

As of April 1, physicist Dorothea Samtleben is the first female program leader of Nikhef, the National Institute for Subatomic Physics. Samtleben will lead the Neutrino Physics group there. ‘This is an important step for Nikhef when it comes to diversity.’

On 8, 9 & 10 October Share the LUVE takes place, the graduation show with the work of this year’s graduates of the Cultural Anthropology master Visual Ethnography. In three days 22 films, a graphic novel, artwork and photos will be presented in De Buurt, close to Leiden Central Station. If you don’t…

Hans Slabbekoorn is specialised in animal sounds. On 1 July, he was appointed professor of Acoustic ecology and behaviour. A great honour, according to the new professor. ‘This job never gets boring, whether I am investigating the urban jungle or marine noise.’

Algorithms solve problems. But which algorithm is best suited to which problem? During his doctoral research, Diederick Vermetten developed methods to figure this out. And that is important for the entire field.

Every week, Uwe Hensch walks past the Old Observatory in Leiden. In corona times, he decided to make a LEGO design of the historic building. His design is now finished and might go into production. You can help to make it happen.

For decades, unmarried girls and women in the Netherlands were forced to give up their newborn children. The impact was profound and persists to this day for the mothers, fathers, relinquished children, and the adoptive families in which they were raised.

The new open access book The Science of Citizen Science bundles insights into science that is conducted together with citizens, to promote this growing form of science.

A European team of astronomers has discovered the largest stellar black hole in the Milky Way. It is more than thirty times as massive as our sun and is located in the constellation of Aquila, about two thousand light-years from Earth. The astronomers stumbled upon the black hole by chance while preparing…

The winner of the Africa Thesis Award 2023 is Rachel Dubale, a graduate from the Research Master in African Studies at Leiden University, with her thesis “They think we can eat the condominium”. Chronicles of Economic, Social and Political Practices in Addis Ababa’s Condominiums.

A team of scientists, including Leiden Astronomer Alice Booth, has discovered silicon monosulfide molecules in the dust disk around a young star. Such molecules indicate planet formation. The team made the discovery using the ALMA telescopes. This method provides an alternative when direct observation…

How do you engage students? Sander van Kasteren knows how to do that like no other. ‘He compares immune cells to Pokémon and doesn’t just give information; he tells stories,’ students say about their favourite lecturer, Sander van Kasteren. The Professor of Molecular Immunology passionately teaches…

In 1808, the United States banned the transatlantic slave trade. Not everyone was happy about this, as Marcella Schute discovered. In her thesis, she shows how politicians from Louisiana made serious attempts to restart the slave trade in the mid-nineteenth century.