On this page you can find information about previous CCLS events.

Fascinating images, articles of clothing and other unique objects from the past four centuries of the history of Leiden University can now be seen in the ‘Celebrating Curiosity’ exhibition in the hall of Rapenburg 70.

Dutch artist and visionary David Humbert de Superville (1770-1849) was the founder and first director of the Print Room at Leiden University. An exhibition and symposium are now being organised in his honour. What makes him so remarkable?

The Hortus Botanicus is celebrating its 425-year anniversary this year. It’s the oldest botanical garden in the Netherlands, but how did it come into existence and what kind of research takes place there?

Hundreds of new students at Leiden University attended the opening of the 2015-2016 academic year. They came from all corners of the world for the start of their new study programme. Portraits of some of the newcomers.

Farmers on the outskirts of Nairobi National Park protect their livestock using flashing lights on top of the animal enclosures. This system keeps lions away at night. Leiden research has shown that the method is both simple and effective. Publication in PLOS ONE.

The book: Hegemony and World Order: Reimagining Power in Global Politics will be published this week. Jan Aart Scholte: 'We hope that students, lecturers and policy makers will start to think differently because of this book'

Yusen Yu wins the prestigious Graduate Student Prize of the Middle East Medievalists (MEM) with his article

A cultural delegation from Taiwan has presented 175 books and journals to Leiden University. The gift is meant as thanks for all the research carried out by the university on the subject of the indigenous peoples of Formosa, as Taiwan was called in the past.

The Leiden Hortus Botanicus is the oldest botanical garden in the Netherlands. Although perfect for a ramble, it is much more than an open air museum. PhD students carry out their research here and the Hortus makes a serious contribution to biodiversity through the exchange of rare seeds with other…

Photographs of sacred rituals and ceremonies in Asia by Bangkok-based photographer and author Hans Kemp can be seen in the front hall of the Leiden Town Hall from 27 June to 19 August 2019. Here a sneak preview.

The international conference ‘Lessons from Afghanistan’ touched on many serious issues and raised several reasons for concern. But it also ended on a positive note. While politicians on both the domestic and the international levels have failed to prevent the collapse of the Afghan state, and we are…

Although seen as the fastest and cheapest way to global climate protection, a uniform global carbon price would have major consequences for the economic competitiveness of countries. Hauke Ward, who recently joined Leiden University, showed in the journal Energy Economics that modern western countries…

The International Institute of Air and Space Law was delighted to host the 14th edition of the Leiden-Sarin International Air Law Moot Court Competition – for the first time – in Leiden! After three years of online mooting owing to the pandemic, this year’s competition was held again in person.

On Thursday 14 October, Dr Martine van Ittersum gave the first lecture of the Van Vollenhoven Institute’s year-long workshop 'Reconsidering the Socio-Legal Gaze'. Attended by over 40 people, her lecture, entitled 'Van Vollenhoven and Grotius: Soulmates in Empire' examined Grotius’ influence on Cornelis…

The Hague Journal of Diplomacy is pleased to announce the winner of the 2023 HJD Book Award: Ascending Order: Rising Powers and the Politics of Status in International Institutions, by Rohan Mukherjee, Cambridge: Cambridge University Press, 2022.

From pipetting in the lab to shining in front of the camera at a global student event. With 8.000 viewers watching the livestream, Marjolein Crooijmans presented the iGEM Giant Jamboree in Paris.

Gayathri Jaikamur has been awarded by the Dopper Foundation in the Change Make Challenge. She is a student of Masters Biology (Specialisation: Evolution, Conservation and Biodiversity) from India - working under the supervision of CML-researcher Dr. Thijs Bosker (and co-supervision of Dr. Nadja Brun).…

The Leiden Law Blog is celebrating its first anniversary. The blog attracts many visitors and scores well in Google. Tips for bloggers: link to previous blogs, post them on social media and respond to comments.

As of 1 September 2015, Michiel van Groesen is Professor of Maritime History at Leiden University. He succeeds Professor Henk den Heijer, who retired and gave his farewell lecture at 25 September. Den Heijer held the chair from 2010 to 2015. Before coming to Leiden Van Groesen worked as Associate Professor…

Carolyn Nakamura works as a postdoctoral researcher on the profile area Global Interactions.

Last week, Ajay Gandhi, Assistant Professor at the Leiden University College, wrote an article about how spider's webs can explain the dynamics of social beings.

On Friday 12 November 2021, the Net Zero Space initiative was launched at the Paris Peace Forum. The International Institute of Air and Space Law (IIASL) of Leiden University is one of the first supporters to the initiative.

Five thousand years before the common era (BCE), Proto-Indo-European, the mother of many languages that are spoken today in Europe, Central Asia and South Asia, originated in eastern Europe. PhD candidate Axel Palmér has combined a 175-year-old hypothesis with new techniques to demonstrate how descendants…

Mahmood Kooria shows in his dissertation that Islam often adapts to the regional context. PhD defense 14 December.

The aim of Plan S – open access in science – is quite right, says the League of European Research Universities (LERU), of which Leiden University is a member. But the proposed implementation plan will cause too much difficulty for researchers and institutes. LERU has therefore come up with ten recommendations…

It's a race against time for Charles Jeurgens, Leiden Professor in Archival Studies. He is investigating how the colonial authorities created the archives in the National Archive in Jakarta. ‘The acidic paper deteriorates rapidly in this hot and humid climate.’

On 5 May we celebrate freedom, a basic human right that should not be taken for granted. We asked international students and staff what it means to them.

This academic year, we are welcoming several international students who have started studying at FGGA with a prestigious scholarship. We asked them about their background, their reasons for applying, and the application process. Congratulations to all students who have been awarded a scholarship!

Reseachers of the Institute of Environmental Sciences Leiden (CML) have contributed to a debate in the Journal Nature over whether lions in Africa can only be saved with dollars and fences.

In 2023, it will be fifty years since Vietnam and the Netherlands established diplomatic relations. This will be commemorated in both countries. At the beginning of November, outgoing Prime Minister Mark Rutte visited Hanoi, the capital of Vietnam. On that occasion Leiden University Libraries will launch…

Three PhD candidates from Leiden University have been awarded a Mosaic 2.0 scholarship for their PhD research. The Dutch Research Council (NWO) Mosaic 2.0 programme is aimed at an underrepresented group of graduates with a migrant background.

Video projections in contemporary art are convincing not because they depict reality, but because they show new possibilities within that reality. Artist Sophie Ernst demonstrates this in a thesis and an exhibition. She defends her PhD on 8 December.

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…

Universe Awareness is one of fifteen projects chosen by WISE for providing compelling and innovative solutions to today’s most pressing challenges in education.

Thanks to fanatical lobbying various groups of citizens and traders had a lot of influence on the initial success of the Dutch colony in Brazil. This is the conclusion of Leiden PhD candidate Joris van den Tol, who defended his thesis on 20 March.

Wayang is a centuries-old Javanese tradition, but this style of puppet theatre is undergoing serious change. Kathryn Emerson shows this based on the work of Purbo Asmoro. PhD defence 28 June.

Graduation Ceremony of the LL.M. Advanced Studies in International Children’s Rights 2023-2024

Ever since the foundation of Leiden University in 1575, philosophy in Leiden has been committed to open-mindedness, dialogue, and comparative perspectives. In line with this tradition it makes perfect sense to question the widespread self-image of philosophy as well. Is philosophy the exclusive privilege…

Between January 11th and 14th the Institute for Philosophy of Leiden hosted the second edition of the Beijing-Leiden Conference in Philosophy, devoted to the topic “Emotions in Comparative Perspective.”

Brazil is one of the world's largest emerging economies, but more is needed if it is to use this economic power for all parts of Brazilian society. This will be the subject of Professor of Brazilian Studies Edmund Amann's inaugural lecture on 20 November.

A team of researchers based at Leiden has taken over the editorship of the journal Global Governance: A Review of Multilateralism and International Organizations. For the first time, the journal will now be based outside the United States. The new Editor-in-Chief, Associate Professor Alanna O'Malley…

Festival, Book launch

Lecture, VVIK Lecture

Doctors are there to diagnose and treat people. But sometimes a diagnosis can’t be made or doctors differ in opinion. Luckily, Alireza Mashaghi Tabari and his research team have developed a new framework to solve medical diagnostic problems. This framework can also be applied to many other research…

An international team of astronomers has discovered a large reservoir of hot gas in the cluster-in-formation around the Spiderweb Galaxy. Based partly on that hot gas, the astronomers predict that the cluster-in-formation will grow into one of the largest objects in the universe. A step closer to discovering…

‘Microscopy is by far the least understood, most inefficiently operated, and the most abused of all laboratory instruments,’ reads the quote on the office wall of microscopy unit supporters Joost Willemse en Gerda Lamers. It describes exactly why the two developed the microscopy course for starting…

The large-scale project NanoInformatics will assess the risks associated with nanoparticles. The project will be funded by the EU with 6.8 million euros and was launched at the beginning of this year. Three scientists from Leiden are involved. 'For the first time, this project combines the various experts…

Physicists, including Leiden researcher, Sanli Faes, have devised a new technique for studying processes at microscale rapidly and extremely precisely. This new method will make it easier to develop antiviral medication. And it doesn’t stop there. Publication in ACS Nano.