Cut marks on the bones of bears show that people in North-West Europe used bearskins to keep warm 300,000 years ago.

After twenty weeks of hard work, third-year students of International Studies wrapped up the ‘Practising International Studies’ (PRINS) consultancy course by pitching their major research findings and advice to organisational partners. We were invited to attend the presentations on behalf of the International…

Many poor people in Indonesia mainly rely on their family members, neighbours and the local community as a social safety net. One of the forms of aid from the community is called ‘jimpitan’ in Central Java. PhD candidate Ayu Swaningrum researched how this social security system works.

From pipetting in the lab to shining in front of the camera at a global student event. With 8.000 viewers watching the livestream, Marjolein Crooijmans presented the iGEM Giant Jamboree in Paris.

The Grotius Centre for International Legal Studies is proud to announce a fortified partnership with the International Bar Association to annually stage the largest moot competition focused on international criminal law: The International Criminal Court Moot Court Competition.

New Report Launched by ACPF with the support of the Department of Child Law and Health Law

In its new Annual Report 2023, Leiden University reviews its research and teaching, as well as its ICT, staffing, finances, real estate, impact and knowledge transfer.

The Erasmus+ Blended Intensive Programme (BIP) is a short and intensive mobility programme funded by the European Union, that combines online learning with a short trip for in-person teaching.

What happens in the mind of someone with ADHD? GZ psychologist Bianca Boyer discusses this in a two-part episode of the Dutch 'Podcast Psycholoog'. She likes to look beyond the symptoms described in the DSM-5. 'Those are just the tip of the iceberg.'

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.

On Friday 29 August, the Wijnhaven was filled with a special mix of first-year students just beginning their academic journey, and students who, after 1,089 days of intensive study, were awarded their Bachelor’s degree in Security Studies. In two festive sessions, a total of 223 students received their…

Winning an award at the start of your studies? No problem! Lieke Vertegaal is 20 years old and a first-year Computer Science student at Leiden University. On November 29, 2021, the Royal Dutch Academy of Sciences (KHMW) awarded her a Young Talent incentive award.

About one and a half million people worldwide die each year from tuberculosis. For thirty years, therapy with antibiotics has been the same, while it takes far too long and can lead to resistant pathogens. Leiden researchers from four institutes are now joining forces to develop more effective and efficient…

The shock wave triggered by one of the five galaxies making up the iconic Stephan’s Quintet appears to be less disruptive than previously thought, with the shock likely being cushioned by dust particles in the surrounding gas. This is according to the analysis of the first scientific observations of…

The war in Ukraine is entering a new phase with the announcement of a partial Russian military mobilisation and the intention to annex four Ukrainian regions. Why is Putin making these decisions just now and what consequences will they have for the course of the war? We talk to professor and Russia…

Promovendus Dorine van Staalduinen deed onderzoek naar de implementatie van Waardegedreven Zorg en ontdekte dat structurele samenwerking nog uitdagend is.

The Faculty of Science has gained an extra 30,000 square metres: Thursday 25 January marked the completion of the new Gorlaeus Building. In this second phase of the project, the Gorlaeus Building has acquired a new main entrance on Rosalind Franklinplein with a striking facade. The new space will be…

The Faculty of Archaeology's own home-grown journal Inter-Section has released a new volume. Inter-Section offers students and PhD candidates the unique chance to publish in a peer-reviewed journal. The new volume focuses on the materials that shape our world.

The celebration of the university’s 450th anniversary is not confined to the walls of the university. For the 7th time, professors stood in front of the class of grade 7, in both Leiden and The Hague. Four FGGA professors visited primary schools, introducing the children to research questions such as…

People can be easily mislead with graphs. But they don’t necessarily stay misled, the research shows.

Her part-time job as a city guide in Dordrecht opened Lotte Hamm's eyes: not business administration, but history was her dream study. This semester she starts her bachelor's degree.

Complex research with a generous sprinkling of jargon: PhD defences can be difficult for non-experts to follow. In the compulsory new lay talk, PhD candidates begin by explaining their dissertation in words of one syllable. And it’s not just the PhD’s family and friends who appreciate this.

From Thursday-Friday 28-29 April 2022 the Stichting Bob Wessels Insolvency Law Collection (BWILC) invites PhD students from Europe and beyond to participate in a fourth edition of the PhD workshop on European/International Insolvency Law.

In April 2025, Ms. Esther Rachow from The Hebrew University in Jerusalem presenting her ongoing doctoral research at an Austria Centre Leiden lunch-time talk. She answered a few questions about her visit below.

Nicky Boer is enrolled in the Educational Master’s Programme in Social Studies/Social Sciences at ICLON, the Leiden University Graduate School of Teaching.

At the start of the COVID-19 pandemic, researchers from 15 departments at Leiden University Medical Center (LUMC) realised they could do more for patients if they joined forces. This is how the BEAT-COVID group has been able to rapidly gain knowledge about COVID-19, the role of the immune system and…

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…

Leiden researchers Reinout Vriesendorp, Jessie Pool, and Harold Koster from the Department Corporate Law and Jan Adriaanse and Marc Broekema from the Department Business Studies are about to start a collaboration with Groningen University. The WODC (the knowledge centre in the field of the Dutch Ministry…

Professor Edmund Amann will be the new Professor of Brazilian Studies. A short introduction.

As the father of a family with four children, he already visited the Hortus regularly. Now Tom Schreuder also comes there for his work. Every day he travels from Lisse by bike. The new Director Operations calls it a ‘perfect match’.

The Modderman Prize is awarded once every two years to advance research in the field of criminal law science.

Even embryos can become embroiled in an evolutionary arms race with another species. Leiden biologists demonstrate this with larvae of the rosy bitterling that parasitize the gills of freshwater mussels. They published their research on February 19 in PNAS.

On the initiative of Leiden Law School’s Art Committee, the festive opening of the photo exhibition of the Leiden Amateur Photographic Society (LAFV) took place on Friday 20 May 2022 in the C corridor of the Kamerlingh Onnes Building.

In a well-filled Telders Auditorium, university learners of Korean competed with each other to see who speaks Korean 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.

Just like scientific articles, patents cite scientific literature to support their findings. These references provide valuable information on how science is used to develop practical applications. However, extracting this information from patents is not that simple.

The Leiden University Visual Ethnography collection has been added to Alexander Street Press, an educational streaming video service. The master’s specialization Visual Ethnography has supported many talented individuals to produce inspiring films. About 70 master’s thesis films of the past 8 years…

Every year, the first Monday in November is Emergency Response Day: the opportunity to recognise the importance of emergency response officers. At Leiden University over 400 enthusiastic and dedicated emergency response officers make sure our students and staff are safe, says emergency response training…

Just start somewhere: whether it's videos, board games, theatre performances, or festivals. That was one of the key insights Sophie Wintermans gained during the Science Communication Summer School. In her view, the Summer School is a great step for any scientist interested in science communication.

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 few weeks ago, Dutch pension giant ABP decided to divest from fossil fuels. But is this actually going to help the climate? Natascha van der Zwan, Arjen van der Heide and Philipp Golka (Institute of Public Administration, Leiden University) address this question in our new article for S&D.

Understanding what our buildings and cities are made of is an important step in making them more sustainable. Industrial ecologist Tomer Fishman (CML) has received an ERC Starting Grant to map the construction materials used in buildings in the Global South. 'Without the data, you can't formulate po…

This month, ten teachers received a Senior Qualification Education (SKO), including Marcellus Ubbink and Daan van der Es from our faculty. Why did they go through the process of getting qualified, and should all teachers have an SKO?

We want to be an engaged community where we feel heard and enjoy working together. But how do we have an open conversation about difficult topics?

Leonie Vreeke is ready to start a new 5-year project to develop a stepwise treatment specific to very shy young children. Her proposal was granted by ZonMw with nearly € 600.000,-. A PhD student and a research assistant will be appointed to execute this project, together with societal partners such…

There was a lot of interest. In front of nearly a hundred researchers, supporting colleagues and Martijn Ridderbos, the Vice-Chairman of the Executive Board, Lotte van Dillen, Research Director of Psychology and Saskia Goedhard, Director of Humanities Operations jointly opened the new lab with a classic…

Thursday 19 February – Snow, board games, a ski lift and more board games. And in between, a bit of work. That’s Jasper’s winter sports day.

Do children growing up in a jihadist or right-wing extremist household develop the same extremist views as their parents?

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…

The annual homicide rate has decreased considerably since the 1990s. In their hunt for an explanation, researchers Pauline Aarten and Marieke Liem made a surprising discovery: if you divide homicides into categories, you find significant differences in the homicide rate. Publication in the European…