What is Planet A? A new exhibition in the Old Observatory sheds light on how we all have different perceptions of earth. In five art installations, visitors are confronted with their own beliefs and how these differ from those of others.

A really worthwhile cross-fertilisation. This is how two enthusiastic students from the TU Delft describe the Leiden Leadership Programme. ‘I'm already applying in Delft things I am learning here.'

In April 2025, Ms. Esther Rachow from The Hebrew University in Jerusalem presenting her ongoing doctoral research at an Austria Centre Leiden lunch-time talk. She answered a few questions about her visit below.

Professor Nira Wickramasinghe has won the American Historical Association John F. Richards Prize in South Asian History for her book Slave in a Palanquin. Colonial Servitude and Resistance in Sri Lanka' (Columbia University Press: New York 2020).

Four students of the Faculty of Archaeology investigated how the current and past inhabitants of the Dutch province of South Holland deal with water. Their findings now feature in an exhibition that can now be visited in the Van Steenis building’s Reuvenshal.

With a trip through the Netherlands, the preparations for the graduation of the Master Cyber Security had already started weeks ago. The apotheosis took place on Thursday, the 11th of February. A report of a digital graduation ceremony.

Mass, time, space, and complexity — physicists in Leiden are launching eight new research projects tackling some of the most fundamental themes in quantum mechanics. Their goal: to push the limits of current quantum theories.

Social impact and circular economy. Two topics focusing on the future and bringing forward many concrete problems. Two Master Honours Classes, in which students tackle societal challenges, will start this fall.

Smallholder farms in tropical regions can double their crop production by 2030 compared to 2015, a study finds to which José Mogollón (Institute of Environmental Sciences) contributed. But to achieve this, the farmers must increase the input of phosphorus beyond what is currently foreseen. The study…

Fish populations in lakes and rivers have declined in recent decades. This is probably due to light and noise pollution. The Horizon Europe grant enables ecologist Hans Slabbekoorn to investigate this and improve the situation for migrating fish. In order to do so, a seven-metre-long swimming tunnel…

Macrophages – the front line of our immune system – protect us from infections. But in the case of the tuberculosis bacteria, this often goes wrong. The group of Annemarie Meijer from the Leiden Institute of Biology has now discovered that macrophages in zebrafish are better able to eliminate tuberculosis…

The Academy for Professionals project started in November. The project will focus on further developing existing and new educational programmes for professionals. ‘This is part of taking valorisation seriously.’

Jacques J. M. van Gent (8 June 1932 - 26 March 2021) was director of Leiden University Library from 1983 to 1993. He was librarian in a time of transition and, as director, was able to benefit from the new library building on the Witte Singel. Van Gent was a very different kind of manager from his predecessor,…

That it was students who started the protests in China against its zero Covid policy makes things more dangerous for politicians. China expert Frank Pieke explains the role of students in China, what makes the protests unique and what might happen next.

What actually goes into the development of a massive open online course, a MOOC? University lecturer Tijmen Pronk developed the course 'Introduction to Comparative Linguistics of Indo-European Languages' independently. He talks about his motivation and experiences.

Leiden physicists have managed to detect a single molecule called dibenzoterrylene in a new crystal, and found that it is a candidate component for a quantum network. Future quantum computers will need such a network to work together while maintaining their advantages. Publication in ChemPhysChem jo…

An international team of researchers led by Alice Booth (Leiden University, the Netherlands) have discovered methanol in the warm part of a planet-forming disk. The methanol cannot have been produced there and must have originated in the cold gas clouds from which the star and the disk formed. Thus,…

On Monday December 17th the ILS 2.0, SOLID project will hold an afternoon Symposium on ‘Challenges to European Integration: welfare states and free movement in the EU’ from 11.45 – 16.30. The symposium will take place in room A.014 at the Kamerlingh Onnes Building (Steenschuur 25) of Leiden Law Scho…

Gross domestic product (GDP) is the most powerful indicator in the world. And that while a large part of the scientific community sees it as an outdated figure. Why are we only looking at economic growth? And why do welfare, sustainability and inequality not count? Environmental economist Rutger Hoekstra…

On an excavation site in Oegstgeest Leiden University archaeologists discovered a very rare silver bowl from the first half of the seventh century. The bowl is decorated with gold-plated representations of animals and plants and inlaid with semi-precious stones. The discovery suggests the existence…

The monthly ILS Lunch seminars bring together colleagues and students from Leiden Law School, providing an informal setting to hear what researchers from other research programs and institutes are working on. On Thursday 12 December 2019, the final ILS Lunch Seminar of this year takes place. This month,…

The life of a fibroblast is heavy, but PhD student Julia Eckert makes it 19.5 times heavier, using the Large Diameter Centrifuge at the ESTEC space research centre in Noordwijk.

The FOM Executive Board has appointed Professor Wim van Saarloos (1955) Director of FOM Foundation, effective 1 November 2009.

During the final event of the PRE-Class Rechtsgeleerdheid, secondary school pupils organised a mock trial on the impact of artificial intelligence (AI) on society. Together with the audience, they explored the possibilities and pitfalls of AI. ‘They all did a wonderful job.’

Within the scope of innovating and connecting – the theme of our new Strategic Plan – I paid a visit to Brussels last week. It is important to give Leiden University a face in Brussels and to show our expertise, on Africa for instance.

Childcare, no access to labs and extra time for online teaching. These are the main reasons why young researchers at Leiden University have seen a significant drop in their productive working hours since the beginning of lockdown. These are the results of a Young Academy Leiden survey of over 200 early-career…

For first-year bachelor’s students, it is a well-known phenomenon: student mentors. These older students help newcomers on their way in small groups. Due to the Covid-19 pandemic, this year the choice was made to set up a mentor programme for new master's students as well. We talked to three student…

Carel Stolker, former Rector Magnificus and President of the Executive Board of Leiden University, has been made an Officer in the Order of Orange-Nassau for his services to the city and University. Mayor Henri Lenferink awarded the royal honour to Stolker at the University’s Dies Natalis on 8 February…

It was for the second time that the theme Business Rescue was discussed at the Annual Conference of the European Law Institute (ELI). It was for the second time that the theme Business Rescue was discussed at the Annual Conference of the ELI. In September 2014 as one of the reportes I presented a progress…

In the second semester of this academic year (February 2025), the Faculty of the Humanities will switch to Ans for digital exams. Several lecturers have already gained experience with the new platform through pilot exams. Two lecturers from Dutch Studies, Liesbet Winkelmolen and Myra Arends, share their…

Many organisations have a biased workforce, even though diversity has so many advantages. Australian and Dutch researchers, including Leiden psychologist Romy van der Lee, have developed a solution based on a mathematical model. They published their findings in PLoS One on 28 July.

On 1 September, Ad Maas, curator of Rijksmuseum Boerhaave, was appointed professor by special appointment. In this role, he will primarily focus on the representation of natural sciences in museums.

As of 1 March 2018, Elizabeth (Liesbeth) de Lange has been appointed as Professor of Predictive pharmacology at the Leiden Academic Centre for Drug Research (LACDR). She is head of the research group Predictive Pharmacology and mainly aims at developing mathematical models that can predict the effect…

The Faculty of Humanities has been ranked 17th Arts and humanities faculty in the Times Higher Education world ranking 2015-16. This makes it the top non-Anglo-Saxon institution on the list. The position is 7 places up in comparison with last year's list.

Symposium on the extraordinary excavations at Middenbeemster

A team of scientists, including Leiden Astronomer Alice Booth, has discovered silicon monosulfide molecules in the dust disk around a young star. Such molecules indicate planet formation. The team made the discovery using the ALMA telescopes. This method provides an alternative when direct observation…

Jan Melissen, associate professor at ISGA and editor-in-chief of The Hague Journal of Diplomacy, and his team have been awarded 10,000 euros from the 'Valued' fund. This pilot fund, implemented by the KNAW (Royal Netherlands Academy of Arts and Sciences) aims to increase the interaction between science…

LegalTech: the use of technology and software to provide legal services and support the legal sector. On 1 November, the GovTech Summit 2022 took place in the World Forum in The Hague. During the summit, technological innovations in the public sector were addressed from a number of different perspectives.…

On Wednesday 23 May, a jointly organized Lunch Seminar between the research programs Interaction Between Legal Systems and Reform of Social Legislation takes place. In this very special seminar we have the honour of receiving Prof. Jason Beckfield from Harvard University.

This year the PhDs of the institute had their traditional day out (uitje) to The Hague. The last two years they had stayed in Leiden, so The Hague already seemed like quite the adventure. Indeed, it seems almost that as time progresses and more and more archives become digitized, history PhDs slowly…

Young children who are less empathetic than their peers are more likely to be aggressive when older. This is what Malou Noten concludes in her dissertation. PhD defence on 25 November.

Last month (February 5-8 2024), the University of the West Indies, Cave Hill Campus, Barbados, hosted a workshop entitled ‘Caribbean World Heritage Sites in the light of today’s global challenges: the case of Historic Bridgetown and Its Garrison’.

More and more people worldwide have infections caused by bacteria that are resistant to many types of antibiotic. Why is this and how big of a problem is it?

The new book, ‘Njord in de Oorlog’ (Njord during the War), describes how the Leiden student rowing club was affected by the Second World War in a detailed series of personal stories. On Monday 16 November, Njord president Rosalie ten Wolde presented the first copy to Rector Magnificus Carel Stolker.

That the new building of the Campus the Hague in the Wijnhaven is literally in the governmental heart of the Netherlands should not be a surprise. But who are our neighbors besides all the ministries and the municipality? Let’s take a little walk around the neighborhood.

Heritage Quest is a large-scale citizen science project in the field of archaeology that allows anyone to contribute to scientific research. It is the first large-scale archaeological citizen science project in The Netherlands and one of the few of its kind in the world. As part of the Cultural Heritage…

Lack of manliness, avaricious or too imaginative. These are just a few of the accusations with which British scientists discredited each other over a hundred years ago. PhD candidate Léjon Saarloos researched British scientists around the year 1900 and their idea of what makes a good - and therefore…

Lichens enthusiast Sander van Zon was eager to use his knowledge for his internship. He wrote an excellent thesis on lichens’ biodiversity in the city, of which his first scientific publication will appear soon. With it, he is nominated for the Leiden Science Young Talent Award 2022.

Physicist Martin van Hecke receives a 2.5 million euro ERC research grant for research into information processing materials. Starting out with a piece of rubber that can count to ten.

On April 19, Pax Initiative, a youth led NGO, held its first ever event at the Museon in the Hague. The event, “International Court of Justice Idealab: The Future of the ICJ” was a productive and inspiring discussion among students and young professionals on how the Court can reach the 16th Sustainable…