Meticulous analysis of hundreds of photographic plates from the star J1407 between 1890 and 2007 show no stellar eclipses. Robin Mentel, a master student at Leiden University, could not detect eclipses of the star J1407 by a planet hypothesized to have giant rings, called J1407b. However, an eclipse…

As Scaliger professor, Erik Kwakkel is responsible for the academic context of the complete Special Collections of the Leiden University Library. His inaugural lecture on 15 May will focus mainly on the section closest to his heart: Medieval books.

Chemical substances and nanomaterials are processed on a massive scale in diverse products, while their risks have not been properly assessed. Time and again synthesised substances have been shown to pollute the environment more than lab tests predicted. This is the warning given by Professor of Ecotoxicology…

Leiden alumnus and writer Tomas Lieske has published a novel which is set in the house of Paul Ehrenfest. Ehrenfest was a famous physicist who organized round table events every Wednesday evening at his home in Leiden in the early twentieth century. The big names from modern physics frequented these…

In 1808, the United States banned the transatlantic slave trade. Not everyone was happy about this, as Marcella Schute discovered. In her thesis, she shows how politicians from Louisiana made serious attempts to restart the slave trade in the mid-nineteenth century.

Wolves in the Netherlands mainly feed on wild animals such as wild boar and red and roe deer. But in areas such as Drenthe where these are scarce they also prey on free-roaming cattle used for nature conservation

On February 21st, Maria Vasile, one of the PhD students of the project participated to several events organized in Milan by the University of Milano-Bicocca for the celebration of the World Anthropology Day.

A record number of 417 PhD candidates defended their theses in 2016. How many of these were cum laude? What were their propositions? The advantage of dirty nappies, for example. Read about the facts and figures on PhD defences in 2016.

On 19th August, we received the sad news that our dear colleague, Dr Johanna Stöger, has passed on. Hanna died, surrounded by family, at home in Southern Germany. She had battled her illness for some time, and for a while it looked as if treatment would be successful. Alas, Hanna’s recovery was to…

On 8, 9 & 10 October Share the LUVE takes place, the graduation show with the work of this year’s graduates of the Cultural Anthropology master Visual Ethnography. In three days 22 films, a graphic novel, artwork and photos will be presented in De Buurt, close to Leiden Central Station. If you don’t…

At high doses, drug candidate BIA 10-2474 binds not only to the protein that it targets, but to other proteins as well. It thus deactivates proteins that are involved in the metabolism of nerve cells. This is what an international group of researchers from Leiden University and Erasmus MC, among others,…

Leiden Physics Poster

University lecturer Dario Fazzi and postdoctoral researcher Gaetano Di Tommaso set up a virtual collaboration with the United States last year thanks to a VIS grant. And it was a such a success the project will be repeated next year. Fazzi is looking forward to once again offering his students a multicultural…

The objective of this study is to better understand the distribution of microplastics in the environment. More specifically, we will quantify the abundance and distribution of microplastics on beaches.

Lecture

Lecture, Annual Leiden Terra Incognita Lecture

PhD defence

Conference

‘Critical thinking’ is an expression all academics have heard of: it’s the first learning objective in the Leiden Vision on Teaching and Learning. It’s both a historical topic with roots that reach back a long way and a topical problem too. The question on everyone’s lips is whether critical thinking…

On 16 June 2017, the 3rd CML Rev on tour took place in Berlin. The workshop on ‘The EU and Globalisation: Assets and Liabilities’ was organized in cooperation with LMU Munich and the Wissenschaftskolleg zu Berlin.

Friday 25 April 2025 | Leiden University Institute of Security and Global Affairs – The Hague

Monique Koemans werkt sinds 2,5 jaar op de Nederlandse ambassade in de Verenigde Staten. 'Leiden is een opvallende rode draad in mijn leven.'

The EU is aiming to deter economic coercion with a new legal instrument. Freya Baetens will elucidate this in her inaugural lecture on October 27th.

Anneloes van Iwaarden works part-time as a communications manager at the Centre for Linguistics (LUCL). She grew up in England, Switzerland and the Netherlands, where she eventually studied international relations. But her passion was always writing.

As of 1 January 2018 Irma Mosquera will be appointed as Associate Professor at the Institute of Tax Law and Economics of Leiden University.

Like many moot court competitions around the world, the Leiden-Sarin International Air Law Moot Court Competition was conducted fully online this year. The International Air Law Moot Court is an unparalleled forum for bringing together students and aviation professionals who share a passion for air…

Patients with skin diseases such as eczema and psoriasis, sometimes spend a lifetime searching for the right medication. To help these patients faster and better, scientists across the country are joining forces. The Next Generation ImmunoDermatology (NGID) project, with LACDR professor Robert Rissmann…

Herman Spaink knows of many substances that may help combat tuberculosis. Lab space to study them safely is very limited in Leiden. A brand-new lab at Universitas Gadjah Mada in Indonesia will soon provide a solution. About time, says Spaink, ‘The disease is on the rise and is becoming less sensitive…

Dennis Broeders, professor of global security and technology at ISGA (Institute of Security and Global Affairs), together with two partners, has been granted a major European project: EU Cyber Direct. Together with EU ISS and Carnegie Europe, ISGA forms a new consortium for 3 years with a total budget…

Diplomatica addresses the broad range of work being done across the social sciences and the humanities that takes diplomacy as its focus of investigation. The journal explores and investigates diplomacy as an extension of social interests, forces, and environments.

Because they could really have used it during their own time as students. For many alumni, that’s their reason for signing up for the mentors network at Leiden University. Around 2,200 alumni are ready and waiting to offer students help and answer questions about study, internships or careers. The Faculty…

The walls of Paul van der Velde’s study at the International Institute for Asian Studies are full of neat rows of post-it notes. As organiser in chief, he is right in the middle of the upcoming ICAS 11, the 11th International Convention of Asia Scholars, which is returning to where it was first held…

Working as a diplomat for the Ministry of Foreign Affairs: for many students it would be their dream. Alumnus Tom Groot Haar is busy making it a reality. 'My career seems like a preconceived plan, but it wasn't.'

Leiden University has secured an impressive 12 European exchange grants. This is good news for students, lecturers and researchers from home and abroad.

Bart Barendregt receives a Vici grant of 1.5 million euros from the NWO for his research project 'One between the Zeros, an Anthropology of Artificial Intelligence in Islam'.

Eleven ambitious Leiden students hope to heal burns with a special substance from squid teeth. They are taking part in the international iGEM competition. They need to raise almost 10,000 euros to fund their project this summer.

On 15 January 2019, the external relations committee of the Swiss National Council (lower chamber of the Federal Parliament) held a public hearing on the subject of the draft text for an agreement between Switzerland the European Union with new institutional rules for a number of Swiss-EU market acces…

Emeritus professor Joke Bouwstra (LACDR) will receive this year's Dr Saal van Zwanenberg Ereprijs: a tribute to her years of fundamental research on the skin and the transport of drugs through the skin. This is the first time the prize has gone to a woman.

Conference, Annual Cities, Migration, and Global Interdependence Seminar

He discovered how to determine the rotation and centre of our Milky Way, predicted where comets come from and laid the groundwork for radio astronomy: Leiden Professor of Astronomy Jan Hendrik Oort (1900 – 1992). Piet van der Kruit, whose PhD supervisor was Oort himself, has written a biography about…

Debate, Panel Discussion

Chemistry, which is what Hans Klis studied in Leiden, is not what one might expect of a general journalist. ‘I’m a late bloomer,’ he says, despite having spent four years as America correspondent and written a book on notorious school shootings by the tender age of 34.

The court has dismissed Ratko Mladić’s appeal and upheld his life sentence for genocide and war crimes. The verdict is one of Yugoslavia tribunal’s last. Mission accomplished?

Annetje Ottow is the first female president of the Executive Board of Leiden University, which means a return to her Alma mater.

Rector Magnificus Carel Stolker will retire on 8 February. If there’s one theme running through his career, it’s the links between the University and society. In this series of pre-retirement discussions, Stolker will talk one last time to people from within and without the University. In this edition…

This blogpost reports on one of these conversations, which Alessandro Pisano, political science student at the University of Turin, and I had with regards to the transforming neighbourhood of Mirafiori Sud.