Jens Stoltenberg, Secretary-General of NATO, gave a guest lecture at Leiden University on 19 April. His message was clear: increased international tensions call for greater investments in defence. According to Stoltenberg, the Netherlands is not one of the big spenders in this area.

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?

Jelle van Buuren bespreekt de link tussen radicalisering en psychiatrische problematiek.

During his bachelor's programme in International Studies, Tom de Groot became fascinated by the theme of peace and security. Now he designs and moderates training courses to help professionals develop further in this field.

Researchers from Japan and the Netherlands who were previously involved in the discovery of an exoplanet with huge rings have now calculated that the giant rings may persist more than 100,000 years, as long as the rings orbit in the opposite direction to that of the planet around the star. Their findings…

Assistant professor Markus Davidsen has received the Comenius grant, with which he wishes to improve secondary education on religion. In this interview, he will tell more about the content of his project and its aims.

X-ray and CT scanners are widely used devices in research, diagnostics and the industrial sector. And yet they are not nearly as fast and accurate as we would like. Mathé Zeegers is researching the newest technique in the field at the Centre for Mathematics and Computer Science: spectral X-ray imaging.…

During the final event of the PRE-Class Rechtsgeleerdheid, secondary school pupils organised a mock trial on the impact of artificial intelligence (AI) on society. Together with the audience, they explored the possibilities and pitfalls of AI. ‘They all did a wonderful job.’

Jeanine de Roy van Zuijdewijn teaches the masterclass terrorism 2018 together with Edwin Bakker. Read the interview here.

On an excavation site in Oegstgeest Leiden University archaeologists discovered a very rare silver bowl from the first half of the seventh century. The bowl is decorated with gold-plated representations of animals and plants and inlaid with semi-precious stones. The discovery suggests the existence…

Girls with autism have relatively good social skills, which means that their autism is often not recognised. Autism manifests itself in girls differently from in boys. Psychologist Carolien Rieffe and colleagues from the Autism Centre and INTER-PSY (Groningen) report their findings in the Dutch Scientific…

Now the Dutch national Law Sector Plan has been positively evaluated, the temporary funding provided to Leiden Law School for the research projects ‘Institutions for Conflict Resolution’ and ‘Empirical Legal Studies’ will become structural.

The Seeger Center for Hellenic Studies at Princeton University annually offers a limited number of Visiting Research Fellowships for scholars in the humanities or the social sciences worldwide, who wish to spend time in residence at Princeton pursuing independent research projects, free of teaching…

Corrie Bakels is known as one of the founders of bio-archaeology in the Netherlands. One of her former students, Dr Marco Langbroek, active in astronomy, made a request to the International Astronomic Union to name a recently discovered asteroid after her. Hearing the news, Bakels was astounded. 'My…

From 16 to 18 August, 30 participants from 18 different countries gathered online to participate in the Online Summer Programme: Preventing, Detecting and Responding to Violent Extremism, organised by Leiden University’s Centre for Professional Learning (CPL) together with the International Centre for…

Master's student Thalia Luden receives an NWO grant for her research proposal about a gene that brings flowering plants back into a growth phase. Companies in floriculture and vegetable seed breeding also contribute to the research.

The first generation of Governance of Sustainability master's students has graduated. They received their diplomas during a festive ceremony at Wijnhaven on 17 September. And they will not be the last: The master's programme is only growing in popularity. ‘We are very proud of our first graduates, especially…

How do practice and theory reinforce one another in neuroscience? Professor Birte Forstmann’s inaugural lecture on 2 October will be about building interdisciplinary bridges between cognitive neuroscience and cognitive models. Her approach may lead to brain research with fewer side-effects for patie…

Do you often feel drained after a day at the office? The new SPS Monitor measures how sensitive you are to various stimuli. Psychologist Véronique de Gucht developed the questionnaire. 'I want to demystify high sensitivity.'

Photographs of sacred rituals and ceremonies in Asia by Bangkok-based photographer and author Hans Kemp can be seen in the front hall of the Leiden Town Hall from 27 June to 19 August 2019. Here a sneak preview.

Why is the sky blue? Why are most people right-handed? Why are spiderwebs so strong? These are just some of the questions arriving at Postbus 71, a Leiden2022 project where everyone can ask their questions. Friso de Hartog, the driving force behind Postbus 71, is busy answering as many questions as…

The Klokhuis dedicates a special episode to Leiden alumnus and famous scientist Christiaan Huygens. Part of the episode was recorded at the Leiden Observatory. Leiden researchers also helped shape the episode, which debuts on Tuesday 2 November.

The Executive Board has appointed Ineke Sluiter and Arnold Tukker as distinguished professors at Leiden University.

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.

The Dutch Passport Alerts Register (Register paspoortsignaleringen, RPS) lists Dutch nationals (around 8000 in 2021) whose right to a passport has been restricted. As a result, they cannot apply for, renew, or must surrender their passports. Under the Passport Act, the Tax Authority, the DUO (Education…

‘Ordinary citizens’ are featuring more prominently in foreign policies which has already resulted in some unexpected outcomes such as Brexit. Jan Melissen, Senior Fellow at the Institute of Security and Global Affairs (ISGA) conducts research into the societisation of diplomacy. He is interested in…

To what extent are the rights of children in the Netherlands guaranteed? On 8 December 2015 the Dutch Children’s Ombudsman has published the Children’s Rights Monitor 2015.

PhD candidate Jiangnan Ding explores how you can design a thick slab of rubber in a way that it might act as a mechanical computer bit. This so-called mechanical metamaterial is pushed in a specific way to change its shape. ‘With a very simple material, we might be able to do simple calculations in…

On 1 August, Lars Jeuken started work as Professor of Biophysical Chemistry at the Leiden Institute of Chemistry (LIC). His research is at the intersection of biology and chemistry, but also involves physics and nanotechnology. Jeuken: ‘By linking nanoparticles to proteins and bacteria, we want to convert…

On 24 September the Institute of Environmental Sciences (CML) in Leiden will launch the new version of the Pesticides Atlas in cooperation with Rijkswaterstaat and Royal HaskoningDHV. The online tool is now faster, more user-friendly, more accessible and all data can be downloaded directly. Users can…

Merijn de Bakker and colleagues of the IBL-research group of Prof. Mike Richardson provide a unique view on digit evolution in crocodiles and birds in their recent study published in Nature.

From filtering UV light in sun cream to preventing perspiration odour in socks and sterilising fridges and washing machines. The use of nanoparticles in products is increasing. But what is the impact of these miniscule particles on the environment?

On Tuesday 12 January 2021, the Leiden Law School thesis prizes were awarded at the New Year’s event.

The European Research Council (ERC) has awarded a prestigious Starting Grant to Leiden archaeologist Dr Nathalie Brusgaard. With this €1.5 million grant, Brusgaard will investigate how the transition to farming in Western Europe affected the relationship between humans and wild animals. A theme that,…

On Friday 13 April 2018, the Department of Child Law of Leiden University was proud to host the international symposium 'Deprivation of Liberty of Children in The Justice System – Towards A Global Research Agenda', organised by Prof. Dr. Ton Liefaard and Dr. Yannick van den Brink.

How do practice and theory reinforce one another in neuroscience? Professor Birte Forstmann’s inaugural lecture on 2 October will be about building interdisciplinary bridges between cognitive neuroscience and cognitive models. Her approach may lead to brain research with fewer side-effects for patie…

Leiden physicists have managed to detect a single molecule called dibenzoterrylene in a new crystal, and found that it is a candidate component for a quantum network. Future quantum computers will need such a network to work together while maintaining their advantages. Publication in ChemPhysChem jo…

Soil salinity is affecting large areas in the world and millions of farmers are faced with decreasing yields and many are even forced to migrate . Dutch scientists (Prof Dr. Gerrit van Straten (Wageningen University), Prof. Dr. Peter van Bodegom (Leiden University), Prof. Dr. Jelte Rozema (VU University…

Watching and analysing hundreds of TEDx talks, that too can be research. That becomes clear from the work of PhD student Aletta Meinsma, who is studying potential problems in popular communication about quantum technologies. She explains how she approaches this and why it is so important.

Nadine Raaphorst, university lecturer at the Institute of Public Administration, has been awarded a Veni-subisidy from science financier NWO. This grant of up to 250,000 euros will enable her to set up her own research in the coming years. Raaphorst's research is about consistent decision-making by…

Now that selling via digital platforms is flourishing, we need to take a closer look at the rights and obligations of all the parties involved. This is the subject of the inaugural lecture by Leiden Professor Vanessa Mak on 15 October.

Leiden University is the highest scoring comprehensive university in the biannual valorisation ranking produced by Elsevier and Science Works. They calculate which Dutch universities best exploit their scientific capital, in economic terms and in terms of societal impact. .

Research is at the heart of a solid security policy. That’s why researchers from Leiden are analysing the motives of radicalised people and the biggest risks surrounding digital activity. Read more about their work in the research dossier ‘Security and Threat’.

From the very beginning, the Islam has known an oral tradition. It was only two hundred years ago that Muslims starting writing about the history of Islam, on rocks or other hard materials. Arabic epigraphy (study of inscriptions) turns out to be an essential tool in historical genealogy research. Abdullah…

Mariska Jung, Jasmijn Rana and Looi van Kessel receive a €10,000 KIEM grant for

Leaf-eating caterpillars greatly enrich their intestinal flora by eating soil. Even effects of plants that previously grew in that soil can be found back in bacteria and fungi in caterpillars. Researchers from the Netherlands Institute of Ecology (NIOO-KNAW) and Leiden University write about this discovery…

The Lucia de Berk case or the suicide of Slobodan Praljak at the International Criminal Tribunal for the former Yugoslavia: certain trials keep popping up in media. In her dissertation, Tessa de Zeeuw examines the cultural appeal of such cases and analyses artistic responses. ‘Artworks sometimes have…

An enormous number of monumental buildings, such as burial tombs, appeared in Mycenaean Greece after 1600 BC. Why did this urge to build come to an abrupt end 400 years later? Archaeologist Ann Brysbaert investigates the possible causes thanks to her ERC Consolidator Grant.

Interest group Animal Rights has started a test case to prompt the Netherlands Food and Consumer Product Safety Authority (NVWA) to tackle farmers who do not adequately protect their livestock against wolves. The test case concerns a rejected enforcement request to the NVWA. In it, the NVWA were called…

In 2018 the Laboratory Efficiency Assessment Framework (LEAF) was launched in the UK. The aim of this programme was to help laboratories work more sustainably and efficiently. The initiative got a Dutch spin-off in 2021. Since then, a couple of the laboratories at the Leiden Faculty of Science have…