Water damage, old restorations and copper corrosion in some illustrations. De Materia Medica has been through a lot over the centuries. The manuscript dates from 1083 AD and is one of the oldest illustrated Arabic manuscripts in the world. Due to intensive use, De Materia Medica was no longer in good…

Professor Sarah de Rijcke became the new Rector Magnificus of Leiden University on 15 January 2026. She introduces herself and shares what motivates her to take on this role.

How can humans and computers learn from data? To research this, scientists often use so-called Bayesian methods. Although these methods are widely used, they also have limitations and are not always easy to interpret. In her dissertation Rianne de Heide describes some of these problems and introduces…

If we want tax evasion to become a thing of the past then there has to be more balance in how tax advisers are educated, according to tax professors Jan Vleggeert and Jan van de Streek.

The Pieter de la Court Medal is awarded annually by the Faculty of Social and Behavioural Sciences for an initiative by a student or group of students that, over the last academic year, has made a particular contribution to at least one of the Pieter de la Court themes. This year, this medal has been…

In Dutch magazine De Psycholoog, Anne-Laura van Harmelen talks about the impact traumatic experiences, especially for those who are growing up.

Eric De Brabandere, Anna Marhold and Nico Schrijver of the Grotius Centre for International Legal Studies have been included as arbitrators and Trade and Sustainable Development experts in the newly established European Commission pool in the framework of EU free trade agreements enforcement.

During the LACDR Fall Symposium, Niek Kijk in de Vegte received the annual Suzanne Hovinga Award for the best master thesis. Niek performed his RP1 research under the supervision of Dr. Natalia Ortiz Zacarias and Prof.dr. Laura Heitman in the Molecular Pharmacology group at the Division of Drug Discovery…

Leiden University’s Executive Board has appointed South African Professor Ann Skelton as the new Chair of Children’s Rights in a Sustainable World as of 1 October 2022.

Op de dag van de duurzaamheid van 10 oktober startte de 'Billiecup' pre-pilot op de Faculteit der Rechtsgeleerdheid. Aanwezig waren 'plastic soup surfer' Merijn Tinga, Bart Hemmes van het Leiden University Green Office (LUGO) en Esther Kentin, docent bij instituut Metajuridica & projectleider Leiden…

In haar boek ‘Diensten met geheimen’ vertelt Willemijn Aerdts hoe de AIVD en MIVD te werk gaan. En ontkracht ze ook een paar mythes.

The final meeting which took place on Wednesday 6 September marked the end of the third cohort of master students’ time participating in the The Hague Southwest Thesis Workshop. During this last meeting, master students presented their research results to residents and stakeholders from The Hague So…

On 24 November 2022, Simone van der Hof delivered the annual Mulock Houwer Lecture. The title of the lecture was ‘Niet om de knikkers maar om het spel – Over de digitale versie van een vergeten kinderrecht’.

Wilke Geurds graduated from the Visual Ethnography master's programme last year with her intimate and vulnerable documentary 'F*ck Endo. More than just menstrual pain.'.

Russian literature is awash with disputes, riots and intense political debates. In the new Dutch podcast Schandaal en Controverse in de Russische literatuur, senior lecturer Otto Boele and film maker and journalist Kay Mastenbroek discuss the most talked-about Russian books published in the past two…

Be it in climate change, public health or artificial intelligence, when different disciplines join forces, science often flourishes. The new small-scale Kiem grants will enable Leiden researchers to explore or start collaborative projects with colleagues from other faculties. ‘So seek each other out…

In June 2023, it was already announced that the Faculty of Social and Behavioural Sciences will continue to use the Pieter de la Court building until at least 2035. This offers perspective, which is why various departments are working on a plan for works to improve comfort, appearance and sustainabi…

De plannen van het kabinet-Schoof om een langstudeerboete zorgt voor veel ophef. Promovendus Joris van de Riet schreef een opinieartikel erover voor Trouw. Zijn argument is dat een langstudeerboete desastreuze gevolgen kan hebben voor studentenverenigingen.

Ultimate beneficial owners (UBOs) of companies should have registered their information in the Dutch UBO register before 27 March 2022. The Dutch Minister of Finance saw no reason to postpone the deadline for registration, according to answers to parliamentary questions. In an article on the legal platform…

The Dutch Tax Authorities leaked information about an international tax audit to Uber. In addition, they ‘obstructed and delayed’ an investigation by other EU Member States, says the International Consortium of Investigative Journalists (ICIJ) based on internal documents from the tech company.

Charisma K. Lepcha (PI, Sikkim University), Pradyut Guha (co-PI, Sikkim University), Rajib Sutradhar (co-PI, Christ University Bangalore) and Erik de Maaker (Leiden University) have been awarded a two-year grant of USD 18.000 to conduct research on the impact of ‘green farming’ on the sensitive mountain…

Facility

Erik de Maaker and Radhika Gupta received a Seed Grant to initiate research on how heritage has been and can be mobilised to address climate change governance in Himalayan Asia. This project will address a significant knowledge gap on the potentials and pitfalls of climate governance, with an initial…

Carla Cisternas Guasch, PhD candidate at the Leiden Institute for History, is one of the winners of the 2023 call of the Slicher van Bath de Jong Foundation for the advancement of study and research on the history of Latin America. She receives a research grant of €10.000 (max).

A collection of interviews from the oral history project "Storia de Nhas Pais" ("Story of my Parents") was handed over to the Rotterdam City Archive on 26 November 2021.

Leiden University's Centre for Professional Learning (CPL) and the Montesquieu Institute are jointly launching the ‘Academie voor de Rechtsstaat’ (Academy for the Rule of Law). With this initiative, they intend to offer a course providing in-depth knowledge and insight into the basic principles of the…

Ethics committees advise researchers on ethical issues relating to their research. For example, whether the research meets the criteria for ethically responsible conduct. There are a number of ethics committees within Leiden University.

The protection of data is the responsibility of all of us. The university observes a privacy policy for the purpose of protecting personal data as effectively as possible. An overview of the procedures can be found below.

Do you have questions about data management? Please contact the data stewards:

Lecture, LIMS seminar

Leiden Law School and the Center for Constitutional Studies of the Mexican Supreme Court (CEC-SCJN) have signed a memorandum of understanding, to carry out joint activities in the field of constitutional law and children's rights.

Would you like to take concrete steps toward a sustainable university or do you have a broad interest in sustainability? Over 200 staff members have already joined the Leiden University Sustainability Network. And there is always room for more – even if you’re no expert on sustainability, says project…

During the 80th session of the Geneva-based Institut de Droit International, Aleydis Nissen was awarded the Andrés Bello Prize. The competition was established by James Brown Scott in 1931 and is carried out under the auspices of the Institut.

How many children are waiting for help from youth services in the Netherlands at any given time? And exactly how long do they have to wait?

Since 1 November 2022, Brechtje Paijmans is endowed professor of Conflict Resolution and Legal Protection in Education. Dutch trade journal Mr. interviewed her about her appointment.

Simone van der Hof, professor of Law and Digital Technology at eLaw, has joined the EU Special Group on Code of Conduct for age-appropriate design as an expert.

During the New Year’s Reception on 11 January 2022, the Pieter de la Court Medal was awarded to two students of the Faculty of Social and Behavioural Sciences: Orestes Kyrgiakis and Claire van den Helder. They tell us about the causes they fight for and what it means for the University to be better.…

Only the fittest cyclists stand a chance of taking yellow in the brutal Tour de France. Team Jumbo-Visma is working with data scientists from Leiden. They have analysed the stages and performance of Jumbo-Visma’s riders in previous Grand Tours. And they are researching how to determine the fitness level…

Willemijn de Best’s career path led her to the media sector. Besides the more obvious legal professions, a degree in law actually offers many other possibilities: film and television production with celebrities as clients, for example.