Networks play an important role in various studies, ranging from analysing epidemics in human populations to studying connectivity in electrical circuits. Vincent Traag contributes to the development of igraph, a popular package for analysing large networks.

A number of calls for proposals have been launched to finance innovative educational projects. An overview is given below.

An interdisciplinary photo exhibition about crafts and craftsmanship in different cultures will open at Oude UB on 6 October. At the opening Fridus Steijlen will give an introduction to the Tau Tau puppets that are made in Sulawesi, Indonesia.

From 25 December till 3 January, all University buildings will be closed. The University Library and a number of faculty libraries will have limited opening hours.

This was the programme for The Knowledge Orchard 2025:

Tackling human trafficking has been a priority on international, national and local policy agendas for some decades now. Yet a number of knowledge gaps stand in the way of how the issue is approached. Interdisciplinary research is essential if we want to expand our knowledge to benefit policy and pr…

With a grant from the Digital Infrastructure Insights Fund D//F, John Boy and members of the d12n research cluster will explore new ways critical technologists try to align their work with digital technology with the political goal of defending the public interest.

Roll-up solar panels, bendable phone displays, or better computer chips… The EU project STIBNITE investigated the next generation of semiconductors, made from organic materials based on carbon, nitrogen, and boron. The project has now concluded. During the Open Science Debate on 1 July, the group will…

Portraits that gaze at you and have moving stories to tell: HEAR ME NOW says what usually remains unsaid.

The Just Peace Festival's first edition is live! The Opening Event marked the beginning of two weeks filled with activities to reflect on what peace and justice mean in today's world.

Some of the most significant and surprising astronomical breakthroughs that have shaped science, technology and culture over the last century are showcased in the Above and Beyond open-source exhibition. This exhibition was commissioned within the framework of the International Astronomical Union's…

The annual Orpheus Doctoral Conference, organised by the second year docARTES PhD students, will take place on 28 and 29 May 2020. The call for proposals is now open. Proposals for presentations of any kind are welcomed: from scholarly papers to performances.

Pop-up restaurant Happietaria has opened its doors in Leiden once again. Come and tuck in for charity between 4 February and 2 March. Students from Christian associations in Leiden will be preparing a delicious menu, and the proceeds will go to a charity that fights human trafficking in Southeast As…

Ben Wielstra and his team have received a ENW-M-1 grant. This grant of 354.000 euros is awarded by NWO, and will enable the researchers of the Institute of Biology Leiden and Naturalis to continue their evolutionary newt research.

Editors are essential for publishing and thereby sharing research findings. They serve the scientific community by editing, leading the peer review process and ensuring a high quality of journal publications. Recently, several researchers from CML joined the Editorial Boards of international scientific…

This year’s Remembrance Day on 4 May was more intimate than ever. Although it was not possible to come together as usual, an online lecture by Ethan Mark, who specialises in modern Japanese history, and a special ceremony at the Academy Building made it a moving remembrance after all. See the photos…

Spui Campus is almost ready to open its doors. In the place where the iconic V&D department store started trading back in 1928, thousands of students will soon be attending lectures. The building has undergone an extensive renovation that is sensitive to its history.

Call for participation:

On Monday, February 12, the official spokesperson of the Hungarian government, Mr. Zoltán Kovács visited Wijnhaven to meet with students and discuss several interesting topics with them.

Policy makers urgently need scientists’ help with the phenomenon of big data. This was the view expressed by Prince Constantijn, speaking at the opening of the Leiden Centre of Data Science, the virtual centre for research on big data at Leiden University.

A The Hague-based project is aiming to tackle teacher shortage and socioeconomic inequality reflected in primary education – and the objective is to do so while helping schools face the challenges imposed by the Covid-19 pandemic in the Netherlands. Higher education students are joining hands with primary…

The Netherlands is an open country and should remain so. This is what the rectores magnifici of the Dutch universities write in an opinion piece. Because academic training that does not provide enough of an international perspective lacks quality and relevance to the job market and society.

A large table with tablecloth, a sitting area with soft lighting. A new meeting place in Plexus for students from a migrant background, opened on 6 October. It's has a homely atmosphere, which is just what these students are looking for.

The university has been shaping the city of Leiden for 450 years. A brief history of the university buildings that have helped define the city.

In een spraakmakende rechtszaak over de Wet open overheid (Woo) besloot een rechter zelf documenten over de toeslagenaffaire te beoordelen. Wim Voermans en Annemarie Drahmann deelden hun opvattingen over de zaak met de Volkskrant.

Samuel Jong has won the Institute of Political Science MSc Thesis Prize 2016. With ‘Bridging the Gap: Do Ideological Differences Determine Whether Center-Right Parties Cooperate with the Radical Right?’, Jong completed his Political Science master studies. His research findings, according to the jury,…

The many thousands of small celestial bodies beyond Neptune’s orbit may have ended up there due to a star that passed close to the solar system billions of years ago. This is shown by Leiden simulation expert Simon Portegies Zwart, along with his German and Dutch colleagues. ‘We are answering several…

January is the final month of our temporary exhibition 'Above and Beyond: Making Sense of the Universe for 100 Years'. You can visit every weekend until Jauary 26th.

The formal handing over of the keys for the first stage of the Science Campus will take place on 23 February.

It is with great sadness that we learned that our colleague Leo Waaijers, guest employee at our institute, passed away on August 1 after a short illness.

In two weeks' time, the official opening of the Humanities Hub will take place in the Huizinga Building. The first projects have already begun. Professor Journalism and New Media Jaap de Jong and director of the AI and Digital Humanities Lab Jelena Prokic share their experiences.

If male budgerigars can successfully open a puzzle box with food, they become more attractive to females. Biologist Carel ten Cate and Chinese colleagues publish experimental evidence for this in a paper in Science on 11 January .

February 10th-12th & 16th-19th, Opening Thursday February 9th, 17:00.

Last Thursday, 1 June, the Institute of Psychology's strategy was officially presented during the Institute of Psychology Party. After a year of commitment from across the organisation, there is now a plan for the next five years that includes five focal points, based on the Leiden academic core val…

Jos Gommans is guest curator of the exhibition

A couple of years ago Guy Geltner and Daniel Lord Smail founded BodoArxiv. It provides an open, non-profit repository for papers in medieval studies at different stages of gestation. Anyone can access and download any item on BodoArXiv freely and immediately (see: https://bodoarxiv.wordpress.com/) .…

On 3-4 December 2024, HIAS Greece and the Rosa Luxemburg Stiftung organised a roundtable that took place in Athens to discuss strategic litigation in the area of migration and refugee law.

Pre-registration is open until 3 November 2025

Leiden University turned 444 this year, and we are celebrating this milestone with the residents of the two cities in which we have a presence: Leiden and The Hague. An exhibition about the University and its connections with the city opens in the Atrium of City Hall in The Hague on 2 September.

Monday, 3 April, the yearly field school for all first-year students at the Faculty of Archaeology will start. The municipality of Oss is welcoming our 120 students and provides an excellent practical learning stage for the basic skills they will need to master for their professional careers.

Do you practice public engagement? The International Astronomical Union (IAU) has just released a unique set of open-source materials designed to be used in public engagement training workshops.

The newly launched NWO funded research project ‘Bridging art, design and technology through Critical Making’ aims to interrogate Critical Making by experimentally applying it to a broad range of artistic practices.

Els de Busser (Faculty of Governance and Global Affairs), Ayo Adedokun (LUC The Hague) and David Fontijn (Faculty of Archaeology) have been nominated for the LUS Teaching Prize 2020-2021.

The Research Catalogue (RC) is a searchable database for archiving artistic research. It comprises an open source, online, collaborative workspace application for the archiving, designing and publishing of artistic research.

Leiden students often prefer complicated theory and a difficult test to experiments. Yet associate professor Paul Logman believes students learn a lot from practical teaching. He challenges his students to come up with their research questions themselves. The Leiden Institute of Physics (LION) is at…

Working together, sharing information, communicating and having the same goals. At the official opening on 30 November, biologist Koos Biesmeijer compared Beehive, Leiden University's new student centre in The Hague, with the activities in a real beehive.

At the Faculty's opening of the 2019-2020 academic year, the focus lay not just on the vision for the future of the social sciences, and the opening of the refurbished library, but above all on the government's plans for university financing. The speeches included an interview between Annemarie Samuels…

You win the Leiden Teaching Prize and suddenly all eyes are on you. Three past recipients reflect on how this student-awarded prize has changed how they work and improved their teaching – and how they chose to spend the money.

The second phase of Global Interactions will see a significant expansion of our funding program. With an annual budget of nearly 150,000 euros, we will introduce larger 'Breed' grants, post-docs and cross-faculty teaching development grants in addition to a slightly expanded program of seed grants.

This project studies travel writing about the Dutch East Indies written between 1800 and the end of the Second World War. By analyzing both Dutch travel texts and Indigenous travel texts in Javanese and Malay, it presents a new, double-voiced perspective on (the historiography of) the Dutch colonial…