The radio telescope LOFAR, with a major contribution from Leiden Observatory, has produced the most detailed radio map of the Universe ever made. Never before have so many cosmic radio sources been captured in a single survey: 13.7 million.

Yousef Sweid was called a ‘stinking Arab’ in the sandpit at his Jewish kindergarten in Haifa. In a packed lecture hall, the Palestinian-Israeli actor performed a powerful excerpt from his show ‘Between the River and the Sea’.

The acquisition and administration of the possessions of the “Teutonic House” in Utrecht, and its dependencies, in the Middle Ages until c.1600.

The Old Observatory has a rich history. On this page you will find a short version of the history that took place in the observatory.

Students of Leiden University's Master's in Visual Ethnography join a decades-long legacy, producing inspiring films and projects supported by the Metje Postma Fund.

What are the institutional dynamics of the adoption of internal market legislation?

From 2 to 5 September 2015, Leiden served as the stage for one of the world’s largest linguistics conferences: the Societas Linguistica Europaea (SLE) 2015 Annual Meeting. Marianne Mithun, a professor at University of California, Santa Barbara and outgoing president of the SLE, is not surprised that…

During the Summer School Science Communication, you will learn everything about science communication.

Over eighty percent of all Dutch requests to send asylum seekers back to the country where they should have requested asylum lead to nothing. This is shown by recent figures that Dutch broadcasting corporation NOS requested from the Ministry of Justice. That percentage applies to 2020, the year for…

Professor of Clinical Pharmacology Adam Cohen from Leiden University received the prestigious Dr. Saal van Zwanenberg Honorary Prize on 12 November. The prize honours a scientist who has distinguished themselves in the field of research that has directly or indirectly led to the development of new medicines…

A controversial comment made by Mona Keijzer of the Dutch BBB party (Farmer-Citizen Movement) calling for the return of Ukrainian refugees and Ukrainian conscription-age men to safe areas of Ukraine has sparked fierce criticism. Mark Klaassen, Associate Professor of Immigration Law and a member of the…

Last Thursday, the second ILS Lunch Seminar of this academic year took place. In this successful and well-visited edition, Hans-Martien ten Napel and Mark Leiser both gave very interesting presentations.

The Indonesian Leiden University Alumni Association - IKALI bid farewell to Mutiara Indriani, the first Chair of the association since its establishment in 2018 and welcomes Pascal Hutasoit as the new chairperson.

Anchrit Wille, Associate Professor at Leiden University's Institute of Public Administration, wrote together with Mark Bovens, Professor of Public Administration at the Utrecht University School of Governance the book“Diploma Democracy”. The Economist wrote a review “This fascinating book shows that…

On 26 and 27 September 2024, Leiden University's Grotius Centre for International Legal Studies hosted the H2OLAW conference entitled 'Law-science interfaces within the law of the sea and fresh water law’. The conference marked the launch of a multi-year research project led by Dr Hilde Woker and Dr…

In 2011, the Udhruh Archaeological Project was launched, bringing together teams of Jordanian and Dutch archaeologists to investigate the region and reconstruct ancient water harvesting techniques in the extremely arid landscape of Udhruh. Access to fresh water remains one of the most pressing global…

De maatregelen die het kabinet voorstelt om het asielbeleid strenger te maken kunnen eigenlijk niet direct leiden tot een lager aantal asielzoekers dat in Nederland asiel aanvraagt. Dit betoogt Mark Klaassen, universitair docent Immigratierecht bij Nieuwsuur.

The MORE project covers the development of the new entrance area for the Leiden Bio Science Park. Partners Leiden University, the Municipality of Leiden and the Amstelveen-based development agency Yisheng signed the agreement on 18 March, marking the official start of the project.

On 29 January, the military administration in Myanmar sent a representative to the ASEAN Foreign Ministers’ Retreat, marking the first time that a representative from Myanmar has attended a high-level ASEAN meeting in over two years.

It sounds credible: ‘Research has shown that…’, but is it really? Read in the research dossier ‘From data to insight: the importance of sound research methods’ how Leiden University contributes to more reliable social science research.

Join us in Canterbury and online on the 13th and 14th June for the eleventh annual MEMS Festival at the University of Kent. We welcome papers on a range of topics within medieval and early modern studies for this interdisciplinary conference. Deadline for abstracts, 4th of April.

Leiden Law Cast is a podcast made by Leiden Law School, Leiden University, for everyone who wants to learn more about current legal issues.

Mark Klaassen recently gave a lecture at the Aliens Division of the Court of Rotterdam on the impact on the judicial system of the Dutch cabinet’s plans on immigration and asylum and the future implementation of the EU Migration Pact.

Nancy Kula has been Professor of African Linguistics since 1 February. Now is a good time to hear more about her field of expertise and academic interests.

Denemarken wordt binnen de EU als voorbeeld van streng migratiebeleid gezien. Universitair docent Immigratierecht, Mark Klaassen waarschuwt in een BNR-artikel dat het Deense model valse verwachtingen creëert en weinig kans biedt op grootschalige toepassing.

In Nature researchers at Leiden University and Utrecht University show how 47 teeth from Southern China indicate that anatomically modern humans where present at least 80,000 years ago in the region. This is 40,000 years earlier than in Europe.

To mark the official launch of the network, Maartje Janse and Peter Stamatov have organized a roundtable on Global Abolitionisms at the Annual Meeting of the Social Science Historical Association, November 2015 in Baltimore.

The Rutte IV cabinet will be sworn in soon. A fifth of the prospective ministers and secretaries of state studied in Leiden. Who are they and what did they study?

Rose Vossen has been named winner of the Young Star Award 2021. The Life Science and Technology student received the award on Monday from Ewine van Dishoeck, the founder of the award. Vossen wins a cheque for 2,500 euros for her exceptional results as a bachelor's student. During her final bachelor…

The Dual PhD centre has been granted an ICTO-grant for the development of a digital training programme for dual PhD’s.

On Sunday night 25 September, all the lights in Leiden will switch off and we will see the starry sky above us twinkling in all its glory. A unique opportunity for all residents of Leiden to experience the vastness of the cosmos and view the impressive artwork that hangs over our heads every night.…

On Tuesday 12 April Angus Mol and Aris Politopoulos have been awarded the fourth LUCAS Publieksprijs.

A Leiden and Mainz (Germany) based team studies the activities of early humans in a 125,000 years old Last Interglacial ecosystem, formerly exposed in a large open cast brown coal pit near Halle (Germany). The Last Interglacial is an important warm-temperate period, showing the full flora and fauna…

Hybrid Symposium: Medieval miniatures from Byvanck to the RKD. 18 March 2025, Den Haag.

According to Dutch Prime Minister Mark Rutte, there are currently no plans to introduce mandatory vaccinations in the Netherlands. In surrounding European countries, however, the situation is very different. Professor of Health Law and deputy judge Aart Hendriks: ‘The idea that freedom rights are more…

On 2 April 2025, eLaw – Center for Law and Digital Technologies of Leiden University will celebrate its 40th anniversary as the oldest digital law department in the Netherlands and the second in Europe. To mark the occasion, eLaw will host a conference with prominent speakers from academia and public…

The president of South Korea, Yoon Suk-yeol, has chosen not to use his presidential compound. Professor Remco Breuker states in Time that this marks a change in South Korea’s approach to the compound.

As part of the conference's social programme, participants of ICEHL-21 have the opportunity to go on a walking tour related to the Pilgrim Fathers.

On 27 September the European Commission informed the International Skating Union (ISU) of its preliminary view that its eligibility rules under are in breach of EU antitrust rules.

The Press Freedom Monitor is set to be presented during this year’s World Press Freedom Day celebrations on 3 May. To mark this occasion, the interactive media museum Beeld & Geluid in The Hague will publish a three-part podcast series.

Dear friends of the institute,

On 30 October 2017, the current class of students of the advanced LL.M. programme International Children’s Rights visited the International Criminal Court in The Hague.

Ann Bessemans, who received her PhD degree from the Academy of Creative and Performing Arts Leiden University in 2012, has set a world record for the biggest number of words on a postage stamp.

The construction work on the South Cluster is going ahead throughout the summer. See the photo's and the video below!

Below you will find the answers to some of the frequently asked questions about admission to the clinical specialisations of the Master in Psychology.

Below you will find the answers to some of the frequently asked questions about admission to the clinical specialisations of the Master in Psychology.

Below you will find the answers to some of the frequently asked questions about admission to the clinical specialisations of the Master in Psychology.