A group of biology students are working on a solution to the world’s plastics problem by getting bacteria to make biodegradable plastic.

Suddenly there they were, the Russian soldiers near the border of Ukraine. Since then, reports of tensions between Russia on the one hand and the United States and Europe on the other have dominated the news. What is going on? An interview with Russia expert André Gerrits.

During the summer, a sizzling battle for the first place in the European Championship pool took place at the Institute for History. A total of 63 football fans and other competitive colleagues played along in June and July in the hope of winning a medal.

After the new government announced its plans to cut expenditure on academic education, the Faculty of Humanities launched the flash campaign ‘Stop the Catastrophic Cuts to Universities!’. Now academics across the university have been explaining why their discipline is needed.

Bart Schuurman sheds light on the alarming trend in both the frequence and geographical spread of these incidents with The Parliament Magazine.

President Zelensky of Ukraine has asked the UN International Court of Justice to issue an urgent order to stop Russian military activity in his country. According to Zelensky, Russia has twisted the concept of genocide to justify aggression.

From the effects of hormone fluctuations in women via the interior structure of giant planets to the prehistory of the languages: six Leiden researchers have been awarded a Consolidator Grant by the European Research Council.

Claartje Levelt is professor of First Language Acquisition. She researches how babies and toddlers learn their mother tongue. Besides her work, she enjoys being involved with music.

Yuchen Lian defended her thesis on AI and language evolution at Leiden University.

Everyone has been watching the attack on Ukraine, a war on the European continent, with a sense of foreboding. It will bring devastation, loss, suffering and worry and it raises questions. With these words, Rector Magnificus Hester Bijl opened the meeting on the war in Ukraine at Wijnhaven on Thursday…

Many of the language rules we use today were formulated in the 17th and 18th centuries. In a dual track at the universities of Leiden and Brussels, PhD candidate Eline Lismont investigated why some rules became successful while other rules were quickly forgotten.

Dutch politics is becoming increasingly polarised, and forming stable governments seems more difficult than ever. In the heat of the election race, a psychologist and a historian offer cool-headed advice.

The war in Ukraine is entering a new phase with the announcement of a partial Russian military mobilisation and the intention to annex four Ukrainian regions. Why is Putin making these decisions just now and what consequences will they have for the course of the war? We talk to professor and Russia…

Samen met andere studenten bracht Fien Lurvink hulpgoederen naar Oekraïne en nam vluchtelingen mee terug.

During her work for the European Union, Sophie Vériter witnessed how young people in countries like Ukraine and Moldova were exposed to Russian propaganda. After mapping out the EU’s disinformation policy, the PhD candidate now advocates for a revised approach.

Anneleen van der Meer discusses Russia's alleged use of chemical weapons in Ukraine in an article for The Conversation.

The thermostat in Leiden University’s buildings will be turned down by two degrees. The temperature will also be adjusted in rooms that are cooled. This is the University’s response to the government’s call to use less energy.

The GDPR privacy legislation is no impediment to handing out sanctions to Russian oligarchs or reuniting children placed in care with their parents, says privacy experts Anna Berlee, Marlies van Eck, Simone van der Hof, Simone Huting, Friederike van der Jagt and Jeroen Terstegge.

Many PhD candidates, as well as research master students at the Faculty of Humanities, are members of a research school related to their area of expertise. Research schools aim at the collaboration of researchers from different faculties in the same university (interfaculty schools) or in different…

If you have a question about the University website, or if you wish to post an announcement or report content-related changes, please contact the web editors of your faculty or unit.

Again we had an unusual year, but also this year graduations still continued. We are well aware of the fact that at the start of your PhD track you had never imagined a graduation ceremony in the current context. Nevertheless, our warmest congratulations to the graduates at LACDR in 2021:

A number of our PhD candidates has done their defense in the first half year of 2021. Our institute is extremely proud of our young doctorates who have accomplished this task with their hard work. Congratulations on your achievement. We wish you a successful career and a bright live.

LACDR is proud on her young doctorates who have done their defense in 2024. Congratulations to all for their achievement and we wish everyone a successful career and a bright future.

A beautiful speech by vice-dean Bart de Smit, a mini-lecture on exoplanets and the presentation of three faculty awards. That's how we started the new year at the faculty. Together with colleagues and students, we raised our glasses to a new year full of great collaborations, science and education.

From a meaningless block of plastic to an advanced component that contributes to the energy transition. The technicians and scientists of our faculty think it out in detail and make it a reality. This special project shows that they need each other.

The JUL board 2025/2026 consists of five colleagues:

Leiden University and the Leiden University Medical Center (LUMC) have signed an agreement on ICT for research. This is the further concretisation of previous cooperation between the two.

Leiden's iGEM team has won high honours at the Grand Jamboree in Paris. The biology students came second in the Overgraduate category with their project PHAse Out. They also took home awards for Best Biomanufacturing Project, Best Wiki and Best Entrepreneurship as well as a Gold Medal. To top it all…

A programming competition in Minecraft? It really exists! And even better news: this time LIACS’ student team Mike's Angels achieved the first place! The team has been rewarded $500.

Eva Michaels talks about the current international security environment, including intelligence issues with Sir John Sawers in an interview in El País.

Six programmes in the Faculty of Humanities have been awarded the designation 'top programme' by the Keuzegids. These are the bachelor’s in German Language and Culture, Greek and Latin Language and Culture, Latin American Studies, Ancient Near East Studies, Religious Studies and Russian Studies.

Wereldwijd worden veel samenwerkingsverbanden met Rusland stopgezet vanwege de oorlog in Oekraïne. Hoe zit dat met de ruimtevaart, waar de Russen ook een groot aandeel in hebben?

Missiles that travel at approximately six thousand kilometres per hour, up to 5 or 6 times the speed of sound. Has Russia used those against Ukraine and how is that possible? In Leiden University’s Dutch video series ‘De Werkplaats’, Danny Pronk, political scientist, security expert, and researcher…

Pavel Durov, CEO of chat and messaging app Telegram, was arrested in France last week. The Russian tech billionaire flew into Paris by private jet and was arrested on suspicion of cybercrimes. Telegram allegedly facilitates criminal activities such as money laundering. This raises the question of how…

Assistant Professor of European Studies and International Relations Daniel Schade was a guest on Deutschland Heute on Deutschlandfunk and spoke about the recent Schengen evaluation report by the European Commission.