Promotor: W. T. F. den Hollander, F. H. J. Redig

The Faculty of Science has multiple study associations, which organise both study-related and social activities for students.

Wim Timmermans, a former lecturer at Leiden Law School, has been appointed Knight in the Order of Orange-Nassau. He was awarded this prestigious honour, among other things, for his outstanding contributions in the field of Russian and East European law.

On Saturday 30 June 2018, the Europa Institute hosted the 57th Leiden-London Meeting, with the overall title: “Agencies, Accountability and Association: Legal issues of agencies in the EU legal order and in relations with neighbouring States”.

On 8 and 9 May 2018 the Workshop 'Challenging the Liberal World Order: The History of the Global South, Decolonization and the United Nations, 1955-2000' takes place at Leiden University.

The Dutch police must stop storing personal data indefinitely. This was decided by the Council of State following several publications by investigative journalism platform ‘Follow the Money’ (FTM). Bart Schermer, Professor of Law and Digital Technology, assisted in the investigation.

A team of Leiden astronomers has managed to calculate the first 100 million years of the history of the Oort cloud in its entirety. Until now, only parts of the history had been studied separately. The cloud, with roughly 100 billion comet-like objects, forms an enormous shell at the edge of our solar…

By measuring proteins in tears, ophthalmologists can more easily diagnose dry eyes (Dry Eye Disease). Peter Raus, a Belgian ophthalmologist and PhD student at the Institute of Biology Leiden, developed a new method for protein determination in tear fluid. The technique is also promising for the early…

Astronomers want to understand the Universe, from the Big Bang to the present day, and what the future will hold. In Leiden they focus on two key questions: ‘How did stars and planets originate’ and ‘How were galaxies and black holes formed in the young Universe?’ A new generation of telescopes – just…

Professor David Fontijn is fascinated by the question why people destroy objects that are dear to them. It is a phenomenon that you find everywhere in the world, gaining particular strength in the European Bronze Age. Fontijn wrote a book on this ‘economy of destruction’, published by Routledge.

This projects investigates spatial relations between soils and other resources and the urban layout of a classic Maya center in Campeche, Mexico.

The International Criminal Court (ICC) is under intense scrutiny when it comes to prosecuting international crimes. This due to increasing conflicts worldwide. During her visit to Leiden, the President of the Court, Judge Tomoko Akane, said that the Criminal Court will not yield to threats.

During a symposium in honour of his 60th birthday, statistician Aad van der Vaart received the royal award of Knight in the Order of the Lion of the Netherlands. Colleagues talk about his significance for their field and how they got to know him. ‘The collaborations with Aad have been one of the great…

In the past half a century, China has transformed from an underdeveloped and inward-looking country to a major player in world politics. The country asserts itself more boldly on the world stage; not only in relation to nearby countries and places such as Taiwan, Japan, and other countries that share…

Starting this academic year (2016-2017) Maartje van der Woude, Professor of Sociology of Law at the Van Vollenhoven Institute will organize the Leiden Socio-Legal Series (LSLS).

The Old Observatory in Leiden has reclaimed its most important telescope. Since the 1960s, the Meridian Circle (also known as a transit telescope) had been housed in the Boerhaave Museum. After more than sixty years, the telescope is finally back in its original location. Now, the public can enjoy it…

What practical steps can we take to resolve cross-border claims to looted art and prevent illicit trafficking in cultural goods? That's what the European Parliament asked Leiden legal scholar Evelien Campfens. Her advice: develop a registration system, issue art with a ‘passport’ and set up a European…

Emeritus professor Liesbeth Eurelings-Bontekoe received the royal award from the Deputy Mayor of Amsterdam for her great contribution to the quality of care, especially to clinical and health care psychology.

The man prosecutors say bankrolled the 1994 Rwandan genocide is too ill to stand trial, but the judges in his case said they want to continue with a different type of inquiry. Félicien Kabuga, 90, is suffering from severe dementia. Judges want to move ahead with alternative proceedings that would not…

An international team led by Leiden astronomers has taken the first-ever image of a young, Sun-like star accompanied by two giant exoplanets. The researchers used The European Southern Observatory’s Very Large Telescope for this, known as ESO’s VLT. Images of systems with multiple exoplanets are extremely…

With its iconic buildings, Leiden University has a strong presence throughout the city. The university has left its mark clearly on museum collections in the city.

After a period of maintenance, the 'Photographer' telescope is available once again for visits at the Old Observatory.

After a period of maintenance, the 'Photographer' telescope is available once again for visits at the Old Observatory.

The international legal order is in a process of transformation. But how transforms globalization the international legal order? This research programme provides a clearer framework to analyze this..

The masterstudents who participated in the International Leiden Leadership Programme (ILLP), received their honours certificate at the festive closing seminar on 11 June in the Old Observatory (Sterrewacht). Congratulations to our international students!

How is social cognition shaped by our knowledge of language and stories?

PhD defence

The bi-annual Children’s Rights Moot Court (CRM), organised by the Department of Child Law in partnership with Baker McKenzie, was initiated by Leiden Law School in 2014 on the occasion of the 25th Anniversary of the United Nations Convention on the Rights of the Child.

This page provides updates on the protest today at the Academy Building and Hortus botanicus in Leiden.

Police, administrators and other parties will from now on have access to the advice of the new Academic Advisory Board for the Police. Maartje van der Woude, professor of socio-legal studies, is one of the members of this council.

In 2023, many of our students and staff won great prizes and secured important research grants.

The winter season is almost here and so is the end of our exhibition More-than-Planet. From 1 November, you can only visit us with exclusive guided tours. During this tour, you will visit one of our historical telescopes and we will take you through the More-than-Planet exhibition.

Universe Awareness (UNAWE), an international programme that inspires children from the age of four to twelve with our wonderful cosmos, exists ten years.

After a successful pilot, the Honours Academy is pleased to announce a second International Leiden Leadership Programme (ILLP) starting in 2014 - 2015!

Lecture

Coffeeshop licences may be issued temporarily and reissued after this period has expired. This follows from a ruling by the Administrative Jurisdiction Division of the Council of State in the appeal lodged by the mayor of Roermond municipality against the Court's April 2021 ruling.

Dutch right-wing political party Forum for Democracy has repeatedly demonstrated that it has no lower limit when it comes to morals. Should the courts in the Netherlands protect democracy by banning parties like Forum? Several legal experts from Leiden University commented on this question in newspaper…

Lecture

Maartje van der Woude, Professor of Law and Society, was a guest on NPO Radio 1 programme 'Spraakmakers' to talk about more border fences on the EU’s external borders and the usefulness of such measures. She was also a guest on 'Vroeg!' to discuss a court case about ethnic profiling.

Matthew Fields, from Philadelphia, US, came to Leiden to study astronomy as part of the Euroscholars scheme. 'I came here to gain valuable research experience, and I haven't been disappointed!'

On a sunny Saturday afternoon in May, twenty-five bright international students gathered in the Old Observatory to celebrate their graduation of the International Leiden Leadership Programme. A tour of the Sterrewacht and the ‘borrel’ made for a nice completion of the Honours programme.

The KNAW has rewarded 11 Leiden scientists for their commitment to science communication, by awarding them 10,000 euros each from the ‘Appreciated!’ fund.

A stretchy sheet over a bowl representing space, a marble on it's surface creating a dimple, deforming space. Simple classroom experiments like these are featured in new educational videos by AstroEDU. In the videos Leiden astronomers Maria Cristina Fortuna and Henk Hoekstra explain what we know of…