This international conference, held in Leiden form 22 to 24 May 2017, focused on adat law in Indonesia a century after the Adat Law Foundation (Adatrechtstichting) was set up in Leiden by the famous professors Van Vollenhoven and Snouck Hurgronje. In the decades that followed the Adat Law Foundation…

A report by Casper Stubbé, a Master Industrial Ecology Student, about the debate between minister Timmermans of European affairs and students of Leiden University on climate politics on the upcoming climate conference in Copenhagen

Ariane Briegel wants to use bacteria to detect cancer at an early stage. Together with postdoc Alise Muok, she is developing a method to quickly and cheaply test the urine of patients for the presence of suspicious molecules. They receive a grant of approximately 150,000 euros from the Dutch Cancer…

Imagine getting a notification on your mobile phone with your personal code for impending mental health problems or even depression: yellow, orange, or red. Science fiction? Not for scientist Eiko Fried. 'There is a real chance we can prevent some mental health problems before they occur.' Want to participate…

Over two days in the middle of April the Leiden University Centre for the Arts in Society hosted the virtual Bodies Matter conference. Almost two years in the making, the conference was an exciting and timely opportunity to discuss and debate histories, theories and practices of bodies.

ACPA alumnus Gabriel Paiuk is releasing a new album, titled Degrees of Transparency, on the Unsounds label.

Data Science & AI student Nataliia Bagan combines a passion for mathematics, language, and artificial intelligence. Her exceptional bachelor’s thesis on improving reasoning in large language models earned her a nomination for the Leiden Science Young Talent Award 2025.

Leiden University is entering into a strategic partnership with the Leiden student associations and the Local Chamber of Associations (PKvV). The parties are committed to maintaining and strengthening the existing good relations between them.

Seksueel misbruik tussen broers en zussen kan diepe, mentale wonden veroorzaken. Orthopedagoog Sheila van Berkel geeft behandelaars tips voor hoe zij deze wonden kunnen helpen helen.

Where European integration has long been understood as a peace project, Joris Larik argued in his Havel-Cleveringa Lecture that recent developments point to an accelerated shift towards a European Union that places its interests, security and geopolitical position more centrally.

The Institute of Biology Leiden (IBL) has a new professor: as of 1 March, Frederic Lens has been appointed Professor of Biodiversity and Anatomy of Plants. For Lens, the appointment feels like a wonderful recognition. ‘I am pleased with Leiden University’s appreciation of my contributions to research…

‘Wonder is the beginning of insight. Don’t let that academic curiosity erode.’ This was Jan Anthonie Bruijn’s call to administrators and funding bodies in his valedictory lecture.

Depression or ADHD? Neatly delineated diagnoses fail to do justice to the infinitely complex reality that they refer to, argues Eiko Fried in a new paper for JAMA Psychiatry. His proposal: to map the underlying mechanisms of mental health problems using a Mental Health Atlas.

Als nieuwe hoogleraar Ontwikkelingspsychologie pleit Anna van Duijvenvoorde voor meer samenwerking in de wetenschap. Daarom moedigt ze jonge onderzoekers zich aan te melden bij een netwerk. ‘Het biedt je een bredere blik op de wetenschappelijke wereld.’

Science diplomacy, broadly defined as all activities at the intersection of science and foreign policy, has become a buzzword during the past ten years.

The core curriculum equips students with the conceptual approaches and qualitative empirical research methods necessary to analyze law in context. Specialized electives enable students to dive deeper and focus on particular areas of legal practice—from legal mobilization to regulation and compliance…

Lecture, Herta Mohr Lecture

Lecture, Com(parative) Syn(tax) Series

Lecture, Herta Mohr-lezing

The team of WIIS-Netherlands exists out of the board members and the advisory council.

Diplomatic Studies (DIST) is a peer-reviewed book series that encourages original work on the theory and practice, processes and outcomes of diplomacy.

Lecture, Workshop

Seminar

Lecture, Book talk

Lecture, Research Seminar

Never before has so much research been carried out on the therapeutic effect of psychedelic drugs. Researchers at the LIBC Public Day are happy about the effect the drugs can have on depression, anxiety and PTSS, but at the same time they have some doubts. ‘The hype is bound to crash before long.’

Annetje Ottow is the first female president of the Executive Board of Leiden University, which means a return to her Alma mater.

How can our university really become inclusive? This is what students and staff discussed at our annual Diversity & Inclusion symposium. ‘It’s moving from a have-to to a want-to’

Panel discussion

On 15 May 2025, a roundtable '80 Years of Peace in Europe?' was convened with students and staff at Leiden University to reflect on the anniversary of the end of World War II.

The court has dismissed Ratko Mladić’s appeal and upheld his life sentence for genocide and war crimes. The verdict is one of Yugoslavia tribunal’s last. Mission accomplished?

The Master of Laws: Advanced Studies in International Children’s Rights (LL.M.) was launched in 2015 to equip a generation of professionals to protect the rights of children worldwide. As the programme celebrates its 10th anniversary, we reflect on its impact.

Ten scientists from Leiden University will receive a Starting Grant from the European Research Council. This will allow them to launch their own project, form their own research team and implement their best ideas.

What will be the outcome of the US raid on Venezuela and capture of President Maduro? ‘History shows that people usually react to being bombed by a foreign power by rallying around the flag, not turning against their leaders’, says historian Andrew Gawthorpe in The Conversation.

PhD defence

Almost all the western countries were too late responding to the outbreak of Covid. Why was that? Three governance experts, including Leiden professor Arjen Boin, have written a book about the response to the pandemic. ‘Our current system isn’t geared towards identifying and managing a long-term crisis,’…

The celebration of Leiden's Dies Natalis on Monday 9 February in the Pieterskerk was extra special this year and was attended by many prominent guests. This was the kick-off of the special 88th Lustrum (five-year) celebrations in 2015.

Better supervision of PhD candidates, clear guidelines on career paths and an MRI scanner that can be accessed by all researchers: these are the recommendations from the new self-evaluation. Colleagues say: ‘This forces us as an institute to formulate our mission and vision more precisely.’

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.…

From medicines from snake venom to supercrops and the origin of words. Thirteen researchers from Leiden University will receive Open Competition XS grants from the Dutch Research Council (NWO).

Medici kunnen veel repareren, maar ziekte voorkomen of uitstellen is beter. Daarvoor is vaak leefstijlverandering nodig en dat blijkt lastig. Gezondheidswetenschappers Sandra van Dijk (Universiteit Leiden) en Valentijn Visch (TU Delft) doen onderzoek naar de vraag hoe je mensen kunt helpen met gedragsverandering…

Since Russia’s invasion of Ukraine in February 2022, the European Union (EU) and its Member States have adopted wide-ranging legal and political measures to support Ukraine in its struggle.

Many alumni are frontline health workers and are working day and night to treat thousands of corona patients. Intensivist Michael Frank (53) is one of them. As head of intensive care at the Albert Schweitzer Hospital in Dordrecht, he is steering his department through the corona crisis.

A better understanding of Morocco and the Arab world is crucial for international relations and for Dutch society. This was the key message of Minister of Education, Culture and Science Jet Bussemaker and Ahmed Aboutaleb, Mayor of Rotterdam, at the opening of the renewed Netherlands Institute in Morocco…

Rotterdam is an extreme example of inequality in the Netherlands. There are huge health and life expectancy differences between neighbourhoods. Good access to healthcare and education isn’t a cure-all, say inequality economists Lieke Beekers and Hans van Kippersluis

Many of our staff and students have won prizes over the past year. Others have been awarded a subsidy, or, because of their eminence in their field, they have been appointed members of academic societies or have taken up positions in the community. Reasons enough to be proud of them and to include them…

Lecture