Anti-litter activist Dirk Groot photographed, tagged, and collected more than 400,000 pieces of litter in the Netherlands. Now, he and his data are included in a study on urban litter by researchers from Leiden University and Andrea Ballatore from Birkbeck, University of London.

In the course 'From Ceramics to Plastics: The Mediterranean in 12 objects' students were taught to work with 3D scanning technologies. One of the underlying reasons to introduce students to this technology was to teach them to reproduce objects. ‘More and more archaeological information is stored in…

Have you applied for a LU-Card but not received it? Does your LU-Card not work? Or do you have a different question or problem? Listed below are a few common questions and problems relating to the LU-Card.

Lecture

Lecture

Researchers at the Faculty of Science work every day at the frontiers of knowledge, tackling today’s major societal challenges. Their work is recognised through grants, prizes and other awards. We highlight some of these achievements.

The sixth edition of the lecture series Duurzaamheid & Recht was held during the last semester. Once again, it attracted many students.

Book Launch

Facility

Lecture, Book presentation

Conducting legal research instead of having to sit an exam. In the ‘Onderzoeksassistent’ (Research Assistant) course, students and lecturers arrive at new insights together. Clemens Bakker and Bart Krans share their experiences: ‘You approach the law from a different angle.’

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

Thomas Moerland studied medicine and mathematics in Leiden and has a lifelong fascination with the origins and workings of intelligence. He brought all that together in his popular science book Van IQ naar AI (From IQ to AI).

If you wish to find out about current construction projects, you will find an up-to-date overview of Leiden University construction projects below.

Lecture, Book Talk

Thijs Bosker, Associate Professor of Environmental Sciences at Leiden University College (LUC) and the Institute of Environmental Sciences (CML), has received funding as part of a large consortium to study the impacts of microplastics on agricultural soils. The project will receive 7 million euro of…

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…

Sustainability challenges don’t just call for environmental scientists – they require expertise from many academic fields. Thijs Bosker and Paul Behrens have made it easier for university lecturers to integrate sustainability into their courses. Their initiative, Local Actions, offers ready-made teaching…

Facility, Organisation

Face masks and plastic gloves are supposed to protect us from corona, but they are becoming an increasing problem for the environment. In a special series of the New York Times, Leiden biologist Liselotte Rambonnet and alumnus Auke-Florian Hiemstra talk about their research and the special website they…

The LACDR green lab initiative is a group recently founded by employees of the LACDR. We are devoted to stimulating sustainability in our education and research! With the support of the Institute manager and scientific director of the LACDR, our main goal is making the labs more sustainable by e.g.…

Organisation

As University historian, Pieter Slaman researches the University’s past, but he’s equally interested in its present. ‘It’s useful to be familiar with issues from the past. Not to be rooted in the past because some developments from history are things you definitely don’t want to repeat.’

Anyone who has taken a walk through the centre of Leiden before might have come across him, an attentive group of tourists gathered around. After studying history, Koen van Toen, or Koen Marijt, started his own business. He now organises historical walks, among other things.

The perception of the Middle East is riddled with stereotypes that have had dire consequences on its people. What is myth and what is reality? How did these stereotypes come about? What consequences have they had? All of these questions and more are answered within this reading list.

‘A tax crusader’... that’s how Ferd Grapperhaus, former Professor of Tax Law at Leiden University and father of the former Minister of Justice and Security, described himself. In his biography of Grapperhaus, Assistant Professor Rens Pieterse explains that he saw tax as a contribution to society.

Education

Attention to the colonial past may be increasing, but many aspects of it are still underexposed. Dutch newspaper De Volkskrant, in collaboration with, among others, Leiden researchers Anne-Marieke van der Wal-Rémy and Alicia Schrikker, therefore created a 'Canon of the Dutch Underexposed Past', which…

Annetje Ottow is stepping down as President of Leiden University’s Executive Board on 1 September 2025 after almost five years in the role. She looks back at the highs and lows – and ahead to what’s next.

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.

Artificial intelligence systems are smart. They can recognize patterns better than humans, for example. Yet humans are still very much needed. How can you better steer those AI systems? LIACS lecturer Jan van Rijn wrote a book about this together with a number of colleagues. We asked him a few quest…

From films, video games and historical novels to Nordic folk bands, Old English from the early Middle Ages is experiencing a revival in the 21st century. Together with international colleagues, university lecturer Thijs Porck (LUCAS) made a book about the 'resurrection' of this dead language.

Facility, Organisation

Leiden Law Cast is a podcast made by Leiden Law School, Leiden University, for everyone who wants to learn more about current legal issues.

Since 24 March, the Kamerlingh Onnes Building of the Faculty of Law has been full of hundreds of colourful jellyfish. But behind that enchanting sight is a serious message: the exhibition symbolises the loss of biodiversity in the oceans due to climate change.

With his photo of a fish trapped in a rubber glove, external PhD candidate Auke-Florian Hiemstra has made it to the shortlist for the People’s Choice Award in the prestigious Wildlife Photographer of the Year competition. The photo shows the impact of Covid litter on wildlife.

Special achievements, grants and a top 10 ranking, a great calendar year for the Faculty of Archaeology! See the overview of 2023 in the hall of fame below.

Dr Gianclaudio Malgieri, Associate Professor at eLaw – Center for Law and Digital Technologies, has been appointed Co-Rapporteur for a new joint project of the European Law Institute (ELI) and the American Law Institute (ALI): 'Principles for the Governance of Biometrics'. The project aims to formulate…

Assistant professor Ronny Boogaart, associate professor Henrike Jansen and assistant professor Maarten van Leeuwen have received the popularisation award from the National Research School of Linguistics for their book Maar zo bedoelde ik het niet (That's not what I meant).

History student Lydia Boer has won the Uitgeverij Verloren/Johan de Witt incentive prize. She receives the prize for her bachelor’s thesis The marriage between Johan de Witt and Wendela Bicker: a political affair?

Organisation

A team of LACDR scientists from three different divisions (SPP, BT, MC) contributed to a book on "Substance P in Health and Disease," which will be published by Elsevier. The project was a collaboration with Hannover Medical School (Germany) and was coordinated by Alireza Mashaghi. Master students Ehsan…