According to a new study, for half of the world population the answer would be yes. For the other half: maybe? Leiden environmental researcher and head author Nicolas Navarre explains: ‘With improvements to crop yields, reductions in food waste, and changes in consumption patterns, 90% of people could…

Building more in urban areas is, in most places in the Netherlands, the smartest way to tackle the housing crisis. This is evident from research conducted by Janneke van Oorschot, published in a partner journal of Nature. Remarkably, this does not have to come at the expense of green spaces in cities.…

An evolutionary 'trap' that has haunted crested and marbled newts for 25 million years: Leiden researchers have uncovered a mysterious DNA error that should not be able to arise – yet persists all the same. How is that possible? PhD candidate James France found new clues.

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.

An international team of astronomers, including Leiden PhD student Elia Pizzati, has observed several ancient quasars that, surprisingly, appear to be floating alone in the early universe (less than a billion years after the Big Bang). Until now, astronomers, based on models, assumed that quasars are…

September 2022 marks the tenth anniversary of International Studies bachelor's programme. Some (former) staff members tell us what they think makes the Faculty of Humanities' largest programme so special.

Exploring the minds of our primate cousins in the wild, using under-exploited observations of their travel paths. A large set of observations of the travel paths of wild primates provides new opportunities for in-depth insights in the evolution of the mental abilities that primates, including ourselves,…

Poland votes for a new president in a first round of elections on Sunday. Lecturer Jan Meijer points out: ‘The result will have a lot of impact on Donald Tusk's liberal government and its plans for reforms.’

You may already have seen them in the larger restaurants in the teaching buildings: simple yet tasty hagelslag or cheese sandwiches. Students asked and the University Services Department (UFB) has delivered with its new Pure Basic line. Now there is a lunch for every budget.

The Netherlands returned 478 artefacts to Indonesia and Sri Lanka this week, on the advice of a Dutch committee. Rightly so, says Leiden professor Pieter ter Keurs from the Museums, Collections and Society interdisciplinary research programme. ‘But do make it clear why you are returning something.’

Researchers from Leiden University, McMaster University and Public Health Ontario are calling on colleagues to track down archival specimens of mosquitoes from museums and other collections and to examine them with modern methods. This will tell them more about malaria transmission.

Climate interventions do not lead to more climate action among Dutch, but they do raise awareness about climate change.

To truly help citizens, professionals sometimes need to dare to deviate from the rules. That was the main message during the meeting on ‘rebellious professionals’ in healthcare and well-being, held on 15 October in The Hague.

If you do research on Leidens Ontzet in Leiden, you can count on a lot of interest. But Leiden Kennisstad interns Marieke Nolten and Alexander Nuijten had not expected there would be quite so much interest. They concluded a year of research with the presentation of a scientific paper.

Fish populations in lakes and rivers have declined in recent decades. This is probably due to light and noise pollution. The Horizon Europe grant enables ecologist Hans Slabbekoorn to investigate this and improve the situation for migrating fish. In order to do so, a seven-metre-long swimming tunnel…

What defence strategy should the Dutch government adopt for the next four years? Our experts advise investing in social resilience, strengthening ‘soft power’ and integrating defence awareness into education.

The impact of war extends beyond destroyed buildings and torn families. In bilingual Ukraine, the ongoing war with Russia is a major driver for increasingly discarding the Russian language. What does this mean for the position of Russian in Ukraine?

Since November 2022, Veronica Tamorri has been a new face at the Faculty of Archaeology. Originally from Rome, she joined the Faculty with a two-year Marie Skłodowska-Curie post-doctoral fellowship. Here she is studying human remains from early Egypt and Nubia (Sudan) using bioarchaeological methodologies.…

Master's students of Vitality & Ageing work together with older individuals in the so-called ‘Living Lab’ to combat loneliness. You can watch four brief video’s that show their creative solutions for the course ‘the older individual’ that is coordinated by health psychologist Sandra van Dijk and former…

Every Political Science master’s student at Leiden University completes their degree with thesis. The thesis provides students with the opportunity to pursue a topic of their choosing in depth and conduct independent research. It is a demanding task that requires dedication, attention to detail, and…

Modern humans and Neanderthals may have co-existed in France and Northern Spain for up to 2,900 years until the Neanderthals disappeared. This is what archaeologists from Leiden University and Cambridge University write in a new publication in Scientific Reports.

Individuals suffering from social anxiety disorder (SAD) consistently avoid eye contact. However, in a non-clinical population, gaze avoidance in socially anxious individuals depends on social situations, Jiemiao Chen saw in a series of experiments, for which she used wearable eye-trackers. On 25 April…

A team of international researchers led by Tomas Stolker in the Netherlands has imaged a young gas giant exoplanet near a 12-million-year-old star. The planet is orbiting a star at which planet formation has finished, while the same-aged companion star still has a planet-forming disk. The researchers…

The starting point of human-induced landscape changes has been under permanent debate. It is widely accepted that the emergence of agriculture strongly increased human impact on their environments. However, foragers can and do actively transform land cover and ecosystems. Ethnographic observations,…

Juan Masullo J., Assistant Professor at Leiden University’s Institute of Political Science, has been named a 2025 Harry Frank Guggenheim Distinguished Scholar. His research with Nicholas Barnes on public security policy preferences in Rio de Janeiro's favelas has been recognized for its innovative approach…

Francesca Albanese, UN Special Rapporteur for human rights in the occupied Palestinian territories, visited Leiden Law School on 8 December within the scope of International Human Rights Day.

Over the past year, historian Fenna IJtsma delved into 'four centuries of historical greenery'. As part of the Heritage Deal, with input from biologists at Naturalis and others, she looked for inspiration and examples from the past to contribute to a future climate-proof city centre.

Leiden biologists have found a mutation in flour beetles that allows them to speed up their development. The study has been published in Nature Ecology and Evolution.

New sampling and analytical strategies give archaeologists a better understanding of the nutrition and survival of ancient populations. Publication in PLOS One.

Funded by a ZonMw grant, the LUMC and the Health Campus The Hague will be working with headache patients on research into the use of an electronic headache diary. This resource can help patients gain a better understanding of their migraine attacks and, together with the physician, produce the best…

The Leiden municipality wants to make the city centre climate-proof and combat heat stress by greening it. But they want to do this in a way that does justice to the city’s heritage. Researcher Fenna IJtsma delves into historical greenery to offer inspiration.

On 5 November 2021, Professor Michiel van de Sande of the Department of Orthopedics in the Leiden University Medical Centre (LUMC) delivered his inaugural lecture ‘The Art of Doing and Doing Nothing’. Van de Sande used the opportunity to explore both physical and philosophical aspects of co-decision…

From the first semester of 2026, Leiden University and Universidad Diego Portales (Santiago, Chile) will launch three online virtual exchange programmes. The themes are: political analysis, tensions surrounding Indigenous peoples in Latin America, and the securitisation of borders.

In 2011, the Udhruh Archaeological Project was launched, bringing together teams of Jordanian and Dutch archaeologists to investigate the region and reconstruct ancient water harvesting techniques in the extremely arid landscape of Udhruh. Access to fresh water remains one of the most pressing global…

Leiden University has made available Kiem (seed) grants of €10,000 - an initiative for developing new interdisciplinary, interfaculty research partnerships and encounters. Helen Pluut is part of a Kiem team, one that brings together researchers from Leiden Law School, LUMC, FSW and ICLON (and Young…

De bevolkingsgroei daalt, de fiscale voordelen voor expats zijn niet aantrekkelijk genoeg en te weinig geschikte arbeidskrachten. Peter Wennink van techreus ASML, is niet blij met het ondernemersklimaat in Nederland. ASML dreigt met een vertrek naar het buitenland.

From Monday 19 July onwards, eighteen children between the ages of 10 and 12 are learning the programming language Hedy. In the Snellius building of Leiden University they will be taught the first principles of programming this week.

Het Leiden Leadership Centre (LLC) neemt deel aan het Enabling City Transformation Programme. Samen met de Gemeente Den Haag en andere lokale partners zet het LLC zich in om bewoners en gemeenschappen te betrekken bij de transitie naar een klimaat neutrale stad.

The Dutch Heart Foundation will fund a new nation-wide consortium, AtheroNeth, consisting of preclinical and clinical scientists in the field of atherosclerosis research. AtheroNeth aims to identify novel biomarkers that can be applied to stratify patient groups at risk for acute cardiovascular events…

The EU is struggling with labour shortages. Migrant workers and asylum seekers would be able to fill this gap and solve many of these problems. But, says economics professor Olaf van Vliet, the pros and cons regarding this dilemma need to be explicitly addressed. 'Now the message in campaigns focusses…

In a new essay for Ethics & International Affairs, Dr Henning Lahmann, Assistant Professor of International Law & Technology at eLaw, addresses the question whether states should resort to social media to warn a civilian population ahead of military operations.

The COVID Radar app is citizen science at its best. More than 200,000 users in the Netherlands are answering questions about their health and behaviour to help predict the development of the pandemic. Niels Chavannes, Professor of General Practice at Leiden University Medical Center, explains how the…

Health conditions and social problems often go hand in hand. To address this complex issue in families in The Hague, researchers, managers, support services, policymakers and residents are joining forces. What are the results of this transdisciplinary approach?

Almost all the western countries were too late responding to the outbreak of Covid. Why was that? Three governance experts, including Leiden professor Arjen Boin, have written a book about the response to the pandemic. ‘Our current system isn’t geared towards identifying and managing a long-term crisis,’…

Europe is expected to experience a greater frequency of severe floods. Paul Hudson discusses the challenges of flood management The Conversation.

Maurijn van der Zee searches for insecticides that protect crops without harming wildlife or leaving residues in our food. His GREENSHIELD project received funding from the NWO Open Technology Programme.

In het jaar voor overlijden door zelfdoding zag een groot deel van de mensen een zorgprofessional. Het optreden van zorgprofessionals is van cruciaal belang om het aantal zelfdodingen in Nederland te verminderen. Daartoe moet de kwaliteit van zorg beter, in het bijzonder voor jongeren, jongvolwassenen…

In just over a decade, Uber has revolutionised how we move around our cities. The ride-hailing app was a game-changer: you just tapped your phone and a cab would find you. You even paid through the app. However, some of the Uber’s more controversial practices have triggered the interest of law enforcement,…

The Air and Space Law (Advanced LL.M.) master’s programme at Leiden University is among ten ‘excellent master’s programmes’ at Dutch universities. This is according to ‘Keuzegids masters 2024’, a guide to master’s programmes in the Netherlands.