All comets might share their place of birth, new research says. For the first time ever, astronomer Christian Eistrup applied chemical models to fourteen well-known comets, surprisingly finding a clear pattern. His publication has been accepted in the journal Astronomy & Astrophysics.

We are grief-stricken that our PhD student Maolin Zhang passed away during the early morning of January 17th 2019. He died during a terrible fire that took place at his house in Hillegom.

In collaboration with the The Hague Historical Museum and photographer Dagmar van Weeghel, Leiden University Libraries (UBL) is the first to present a retrospective exhibition of the photographic oeuvre of Alexine Tinne (1835 – 1869). New research into her life and work is the reason for a reappraisal…

The First Americans exhibition in the National Museum of Ethnology showcases the resilience and creativity of native Americans. Striking artworks, fashion and prints show that the past is never far away. Artist Jacob Meders was inspired by 16th-century prints from the Leiden University Library. The…

Advocate-General Simon Minks was involved as a public prosecutor in the Context proceedings. In this interview he shares some insights with the Centre for Professional Learning, of which he is a Fellow.

During the summer, staff of the Faculty of Archaeology travel to all parts of the world, initiating or joining fieldwork projects. Read some of their stories here!

Three new ministries have been formed in the Netherlands: Asylum and Migration, Housing and Spatial Planning & Climate and Green Growth. Of course, this is not merely an administrative act. These ministries carry a strong and political charge and play a crucial role in shaping a government's political…

Studying surfaces of solid materials: it may not seem relevant to energy consumption, but it is. Marcel Rost studies how platinum electrodes wear out. Those electrodes are a crucial component in the fuel cells of hydrogen-powered cars. ‘We need to make the switch from fossil fuel energy to hydrogen.…

The directorate of the Netherlands Research School for Astronomy (NOVA) has two new members. Ronald Stark (currently at NWO) will be the new Executive Director of NOVA from 1 September. Amina Helmi (Professor of Dynamics, structure and formation of the Milky Way at the University of Groningen) will…

Research on papyri has provided new insights into the history of the origins of Islam. Petra Sijpesteijns’s book,'Shaping a Muslim State', is based on these ancient Arabic letters and documents. Her new research on a Viennese collection of untranslated papyri is expected to produce more discoveries.

Tiny self-propelling spheres, measuring only micrometers, move faster over a hydrophobic silicone surface than they do over hydrophilic glass. 'Almost nobody had realised that the substrate matters', says Stefania Ketzetzi, the researcher who discovered the effect, researched it and explained it. She…

LERU, the League of European Research Universities, celebrated its fifteenth anniversary on 7 March in Brussels. The network of leading European universities has now grown to include 23 universities.

During World War II, the Nazi’s ordered a coastal defensive line to be built from the south of France to Norway. This Atlantik Wall aimed to defend their territories in continental Europe from an Allied naval invasion. The defensive line went right through the Dutch city of The Hague. The material remains…

Leiden chemists, together with colleagues at the University of York (UK) and Technion (Israel) have discovered a small, sugar-like molecule that maintains the integrity of tissue around a tumour during cancer. This molecule prevents tumour cells from spreading from the primary cancer site to colonise…

Is our universe built up out of warm or cold dark matter? The standard model assumes cold dark matter particles, but astronomer Sylvia Ploeckinger is now testing the possibility of a warm counterpart: sterile neutrino’s. For this project, she received an NWO Physics/F grant, a special grant for women…

After the death of the Prophet Muhammad, the Islamic Empire expanded at a tremendous pace. Within a hundred years, it stretched from the Atlantic Ocean to the Indian subcontinent. How did such a rapidly conquered territory become one empire? Professor Petra Sijpesteijn has been awarded a Vici grant…

Leo Lucassen was selected by KNAW on the basis of his academic achievements. Lucassen studied socio-economic history in Leiden, where he earned a PhD cum laude. He took up Leiden’s chair in Social History in 2005, and since 2014 he has been serving as Leiden’s professor of Global Labour and Migration…

In supermarkets, consumers are drowning in a sea of sustainability labels. Confusing for them, but also farmers can't see the forest for the trees. Obtaining these labels demands an enormous amount of time and effort. Berent Baris is investigating ways to simplify this process, benefiting both farmers…

Three decades ago, cyber-diplomacy did not exist. The interest in Information and Communication Technology (ICT) as a vector of change in international relations was limited to a few mostly technical organisations, and a restricted number of states.

A permanent exhibition on the place of humans in the cosmos. This is something Franx wants to use his Spinoza Prize for. ‘So much progress has been made that we are still trying to define the questions. In finding the answers we are constantly coming up against surprises.’

The rise of populist parties, the expansion of the role of the state and now the fragmentation of the Senate and the House of Representatives: Dutch political reality has changed rapidly over recent decades. These developments are in stark contrast to Dutch constitutional law that has remained almost…

The channel through which two cell components exchange material appears to form at the edge of their contact surface, and not in the middle. This was discovered by the Leiden physical chemists Jelger Risselada and Edgar Blokhuis together with researchers from the University of Lausanne in Switzerland.…

Researchers from the University of Oxford’s Bodleian Libraries and from universities in the Netherlands have used high-tech imaging to uncover the details of a rare Mexican codex dating from before the colonisation of America.

Are you a great photographer? Or not at all, but you do have a brilliant photo that captures the relationship between food and people? Join the photo contest ‘Food & Society’ of our Faculty and send in your best photo before 3 April 2018!

With the departure of Tesse Stek to the Royal Dutch Institute in Rome for three years, Andrzej Antczak will take over the role of Departmental Head for World Archaeology in September 2018. We spoke with him to learn more about his background, ideas, and plans for the future.

Krista Murchison, University Lecturer at the Leiden University Centre for the Arts in Society, received a Veni grant of 250.000 euros. Her Veni-project will explore the ‘immaterial archive’ and its social and historical significance by digitally recreating manuscripts that were destroyed during World…

Our lecturers had just a week to convert their subjects into online formats. It was an enormous challenge because by no means everyone was involved in remote teaching at Leiden University. As well as being Vice-Dean of Leiden Law School, Ton Liefaard is also a lecturer. ‘I especially want to support…

How can social scientists contribute to a healthier society? That question was central to the Healthy Society Event on 9 June 2022, which successfully marked the start of a more conscious and intensive collaboration between the five Institutes of the Faculty of Social and Behavioural Sciences on education…

Joachim Koops, Professor of Security Studies and Scientific Director of Leiden University’s Institute of Security and Global Affairs (ISGA) has been awarded a ‘Jean Monnet Chair’ with a focus on ‘The European Union’s Role in Security and Global Affairs’ (EURISGA).

On December 16, 2023, our respected and beloved former colleague prof.dr.ir. Bert Peletier passed away.

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…

On 7 and 8 November 2024, the International Centre for Counter-Terrorism (ICCT), the Institute of Security & Global Affairs at Leiden University, and The Netherlands’ National Coordinator for Security and Counter Terrorism (NCTV) partnered to host a ‘Blue-Sky’ Terrorist Exploitation of Artificial…

Gerard van Westen has been appointed full Professor or Artificial Intelligence and Medicinal Chemistry. This chair has been jointly created by the Leiden Academic Centre for Drug Research (LACDR) and the Leiden Institute of Chemistry (LIC) as part of SAILS, the university stimulus program in Artificial…

From the late Middle Ages onwards, maritime conflict has developed hand in hand with international trade. Over time, specific institutions were established to address disputes arising from violence or mishap at sea and in coastal areas. Conflict resolution at sea has mostly been studied through the…

People can be easily mislead with graphs. But they don’t necessarily stay misled, the research shows.

There is a link in adolescents between brain connections and impulsiveness. Leiden researchers have discovered that these connections also predict which adolescents will make more impulsive choices two years further on.

Hybrid Workshop: In person and online on 26 – 27 January 2023.

It is a familiar phenomenon: you ask the assistant on your phone to call your mother, but it calls a friend instead. Tom Kouwenhoven, PhD student in the SAILS programme, investigates how humans and Artificial Intelligence (AI) can better communicate with each other, so that these kinds of situations…

On 2 June 2023, the Liber Amicorum – 'The EU and the WTO: Ever the Twain Shall Meet' – in honour of Marco Bronckers will be officially launched at Leiden Law School. To mark this special occasion, an interactive discussion on 'Five future challenges facing the EU and the WTO in the next 50 years' will…

How did Fustat develop between 640 and 750 to become the capital of Egypt? At the time Egypt was a province of the Islamic empire - the caliphate - that had been started by the prophet Muhammad. Original sources used by Arabist Jelle Bruning give new insights into the city. PhD defence on 2 April.

Five years after the Arab Spring it seems as if the only sign of success is in Tunisia. But is that really the case? The Leiden University Centre for the Study of Islam and Society (LUCIS) is organising a panel discussion on this topic on Friday 12 February.

There’s a change of staff at ACPA. The institute is bidding farewell to Professor Janneke Wesseling and welcomes Anke Haarmann, who is not only a new professor, but will also take over Wesseling's responsibilities as Director of PhD Arts. In this interview we look back and ahead with them.

On the 19th of May 2020, our dear colleague and friend Professor Dr. Huib Ovaa has passed away from prostate cancer. Last summer Huib became ill, and in first instance it appeared that he had attracted a relatively harmless infectious disease. Unfortunately, it became soon apparent that he suffered…

An international team of astronomers including Leiden professor Ewine van Dishoeck has observed the benzene molecule (C6H6) in a planet-forming disk around a young star for the first time. The observations tell us more about the forming of planets in this disc, like our own Earth. The scientists publish…

Nanoplastics can accumulate in developing hearts, according to a study by biologist Meiru Wang from Leiden University. Her research on chicken embryos sheds new light on how these tiny plastic particles pose a threat to our health.

The collaboration between ISGA and the NIPV (Netherlands Institute for Public Safety) has been made official. This took place under the guidance of initiators Jeroen Wolbers (ISGA) and Peter Bos (NIPV) during the conclusion of the three-part lecture series on the Dutch crisis management system. Sanneke…

For two years, Ineke Sluiter was president of the Royal Netherlands Academy of Arts and Sciences (KNAW). Now, she is returning to the university full time. ‘I always carry themes like accessibility, diversity and inclusion with me.’

The topics of discussion included multiple choices questions, research on teaching, workload and many other things. On 29 October four new enthusiastic fellows were installed in the Leiden Teachers’ Academy and presented their research innovation projects.

Professor Nira Wickramasinghe will research forgotten lineages with an NWO Open Competition grant, in particular the afterlife of Dutch slavery in the Indian Ocean World.

Various projects at Leiden University have been awarded an Erasmus+ grant, an EU funding tool. This is a substantial boost to the internationalisation of our research and teaching.