Whether finding signals of dark matter or discovering hydrogen in the vicinity of exoplanets, Leiden astronomers are world players in their field, and they are part of a long tradition: Leiden was the first university in the world to have its own observatory.

Ilja Leonard Pfeijffer delivered the Huizinga lecture on Friday 8 December in a packed Pieterskerk. The writer seized the opportunity of the 52nd edition to point out the importance of creativity, both for artists and scientists.

Anne-Laura van Harmelen, professor Brain, Safety and Resilience will give her inaugural lecture ‘Resilience does not exist’ (in Dutch) on Monday 27 June. In her inaugural lecture she will discuss resilience after childhood adversity.

Over the coming years, LUCL will be collaborating on the development of Macroscope, a new scientific infrastructure that maps social change at the population level. Professors Gijsbert Rutten, Stephan Raaijmakers and Carole Tiberius tell us more about the project.

On Friday 29 August 2025, 370 students received their Bachelor's degree in International Studies. The diplomas were awarded in the historic setting of the Pieterskerk in Leiden. Family members, friends, and staff gathered to celebrate this joyous occasion with the graduates in a packed Pieterskerk.

Professor of Modern China Florian Schneider researches what people do with technology and what technology does with people. Social media, for example. And then mainly in China.

Associate professor Salvador Santino Regilme was interviewed by NPR about Trump’s soft power.

An event where students came together to discuss the impact of AI on healthcare. Jurren de Groot and Yuxuan Zhu, master's students in Artificial Intelligence, took up the debate. They participated in SimuVaction, an event that brings students worldwide together in Atlanta to simulate an initiative of…

‘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.

A day at the beach, games, a visit to an embassy and a pub crawl. The activities at HOPweek help new students get to know not just The Hague but each other too.

Climate and human rights will again become major issues on the world stage by the end of 2023. The new series of lunch seminars by the interdisciplinary research programme Global Transformations and Governance Challenges (GTGC) seamlessly tie into these events. All Leiden researchers and students are…

At the halfway mark, how should we adjust our strategy to a rapidly changing world? Faculty administrators, academic directors, directors of expertise centres, staff from Administration and Central Services, members of the representative bodies and students assessors met on 6 June to discuss this qu…

The latest volume of Contributions in New World Archaeology (Vol. 18) has been dedicated to the memory of Dr Andrzej Tadeusz Antczak, an eminent archaeologist and long standing collaborator of the journal. Dr Antczak, who passed away in 2024 after a long illness, was a respected member of Leiden University’s…

Associate Professor Salvador Santino Regilme discusses the recent launch of the Board for Peace by President Donald Trump in the Portuguese newspaper Expresso.

Lecture, Global Questions Seminar

Sky-high energy prices and a climate that keeps getting warmer: it’s clear that we have to turn down the heat. Sustainability Day on 10 October will mark the start of our five-month Energy Campaign and we’ll be making the switch. Sustainability Coordinators Aranka Virágh (Real Estate) and Marlies Nijemeisland…

An international team of astronomers, led by Will Rocha of Leiden Observatory, using the NASA/ESA/CSA James Webb Space Telescope have discovered that the key ingredients for making potentially habitable worlds are present in early-stage protostars, where planets have not yet formed.

‘Crisis and change in European Union foreign policy.’ That is the title of Nikki Ikani’s book that was published last month. We asked the writer five questions about her book. Presentation: 5 & 20 April.

PhD candidate Wouter Verschoof-van der Vaart has received the Stichting Elise Mathilde Fonds grant from the Leids Universiteits Fonds (LUF) to work on a research project focusing on the landscapes of the Second World War. ‘We will combine citizen science with deep learning to uncover traces of the c…

The LDE Centre for Global Heritage and Development has interviewed Dr Maaike de Waal about the new publication of which she is one of the editors. 'Living (World) Heritage Cities explores how World Heritage Cities are dealing with the preservation of their living heritage, with all the challenges and…

UNESCO has recognized a large collection of handwritten letters and the archive of Raden Ajeng Kartini (1879-1904) as documentary world heritage. Kartini opposed gender inequality in feudal Javanese society, including forced marriages, polygamy and lack of education for women.

Earlier this week, a working group of the United Nations, comprising all 193 of its member states, adopted a consensus report on norms for responsible state behaviour in cyberspace. Dennis Broeders, full professor of Global Security and Technology at the Institute of Security and Global Affairs, Leiden…

'When taking into account all finds in the Islamic world of this enigmatic vessel, it would perhaps be wise not to restrict this container to merely one function.'

The League of European Research Universities (LERU) was launched in Leiden 20 years ago. LERU is a partnership of 23 leading research universities, including the universities of Oxford, Cambridge, Leiden, Leuven and Heidelberg. It celebrated this anniversary last week with a multi-day conference in…

At Leiden University College, Jaap de Hoop Scheffer urged Europe to show unity and strength in a world defined by fear, power politics, and uncertainty.

Where to study ’politics’? According to the QS World University Rankings, Leiden University is a good choice. In the 2021 edition, Leiden and The Hague retain their position in the top 25 of the most esteemed institutes worldwide. Within the Netherlands, we again claim the first position.

After years of development, the moment has finally arrived: a massive cryostat, a highly advanced freezer that keeps the sensitive components extremely cold, has arrived in Leiden from Zurich. The device is the largest component of METIS, one of the first instruments for ESO’s Extremely Large Telescope…

In the Changemakers Lab course, psychology students Diana Shalkivska (left in the picture) and Anna Rytirova discover what happens when academic knowledge meets real-world complexity.

UNESCO has recognized an international set of fifteen manuscripts about Ferdinand Magellan's first circumnavigation of the globe and the three Hikayat Aceh manuscripts as World Heritage. The manuscripts are inscribed in the global UNESCO Memory of the World Register. This list contains documentary heritage…

Always taking the same route to work, going for that one dish in restaurants and going on the same holiday each summer: this may ring a bell for those who don’t like uncertainty. Researchers are now discovering that this aversion affects how we understand the world.

How do digital technologies affect adolescent mental health and resilience? How do we foster a secure online environment? How should we deal with increasing rates of online crimes among adolescents? During the mini-symposium ‘The effect of the online world on adolescents’, presented by the interdisciplinary…

Russia recently blew up a defect satellite. As a result, the amount of space debris in Earth orbit has increased.

Conference

How can we cooperate better as a Faculty? Both with each other and with the outside world. Around 70 students and staff discussed this during the latest strategy session in Corpus. Keynote Harry van Dorenmalen, former president of IBM Europe: 'You know best what this Faculty stands for and what it n…

The 10th edition of the World Congress of African Linguists (WOCAL), hosted by Leiden University, will be held online from 7 – 12 June. Leiden University Centre for Linguistics (LUCL) researchers give us an insight into how important and special this event actually is.

Over 20,000 students, lecturers, administrators, support staff and many others protested on 25 November against the plans to make billions of cuts to higher education. Students and staff from Leiden University also travelled to The Hague to voice their objections to the disastrous plans.

A dissertation covered in hot pink faux fur, antique prints of PhD ceremonies, a pot encrusted with sealing wax: the Hora est! anniversary exhibition at Oude UB takes you to the ritual yet idiosyncratic world of PhD ceremonies.

Lecture, LUCDH Lunch Lecture

In Bronze Age Europe many bronze objects such as axes, swords and jewels were deliberately left at specific spots in the landscape. PhD research by Leiden archaeologist Marieke Visser shows that these practices were expressions of people’s relationship with the world around them. ‘It was a completely…