Did you get a taste for recording local wildlife with Expeditie Stadsnatuur? Join the higher education BioBlitz and help us discover what is growing, crawling and fluttering on our campuses.

The Executive Board is visiting the university’s institutes to find out what is going on. On 8 July 2025, it was the turn of the Institute of Environmental Sciences (CML), one of the fastest-growing institutes at Leiden University. ‘Our main aim is to preserve our planet for future generations.’

An online ceremony, no party and then no signature in the Sweat Room: during the pandemic, many graduation traditions could not take place. Now anyone who graduated in corona time may still come and sign their name.

Max van Lent, Aris Politopoulos, Emily Strange, Claire Vergerio and Astrid Van Weyenberg have joined the Leiden University Teachers’ Academy. Lecturers at the Academy exchange experiences, develop their skills and share their knowledge and expertise with the rest of the university, for example via the…

The Executive Board has appointed Ineke Sluiter and Arnold Tukker as distinguished professors at Leiden University.

The Herta Mohr Building is leading the way in sustainable innovations, for both Leiden University buildings and beyond. It is the university’s first fully gas-free building and the new Thermal Energy Storage system alone will cut carbon emissions by 150,000 kg per year. The building has an ‘Excellent’…

Leiden University and Stadslab Leiden invite you to improve the Leiden and The Hague environment with 450 extra trees – a living reminder of 450 years since the Relief of Leiden and the foundation of Leiden University.

Medical drugs are expensive to make and can have an adverse effect on the environment. Researchers Stefano Cucurachi and Justin Lian have developed a framework to help the healthcare system assess the economic and environmental sustainability of medical compounds.

The underwater world around present-day Indonesia has changed greatly in recent centuries as a result of human activity. University lecturer Johannes Müller has been awarded an NWO XS grant to map the history of the Indonesian ecosystems.

In her inaugural lecture Susanna Linberg will ask how philosophy should respond to global warming.

Over the past year, historian Fenna IJtsma delved into 'four centuries of historical greenery'. As part of the Heritage Deal, with input from biologists at Naturalis and others, she looked for inspiration and examples from the past to contribute to a future climate-proof city centre.

Hybrid Book Talk | SSEALS

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Lecture, Global Questions Seminar

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As Professor of Literature, Culture and Law, Frans Willem Korsten explores the interplay between literature and law. These are two disciplines that most people wouldn’t immediately connect, but Korsten can see a lot of common ground between them. ‘A fictional story can have a huge impact on law.’

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Lecture, LUCL Colloquium - Series '24/'25

The new VIS grant has been awarded to four projects from the Faculty of Humanities. In a Virtual International Cooperation Project (VIS), Dutch and foreign students work together remotely on a project that links local issues to an international perspective.

How can you persuade researchers who are used to conducting research within clearly defined disciplines to adopt an interdisciplinary approach? Newly appointed distinguished professor Arnold Tukker explained.

A collaboration between linguists, geographers and anthropologists aims to uncover how languages spread across South America over thousands of years. Associate Professor Rik van Gijn is responsible for the linguistic side of this NWO project.

The whole world gets raw materials from Latin America, but at the expense of nature. Håvar Solheim researches the role of organised crime in this environmental crime and Soledad Valdivia researches sustainable urban initiatives in Latin America. What do these university lecturers think the future of…

Today marks the launch of the LDE Bachelor Honours Programme Sustainability. Students from Leiden University, TU Delft and Erasmus University will work together on concrete sustainability issues of organisations. Interest in the new programme turned out to be overwhelming. Two lecturers involved share…

Around 1,300 Leideners found 2,265 species during the Expeditie Stadsnutuur urban biodiversity inventory. ‘It’s been a huge success’, says scientific coordinator Frederic Lens.

This week, around 1,200 brand new students from 68 different countries are getting to know each other and their new student city. Orientation Week Leiden (OWL) got off to a good start on sunny Lammermarkt, which was packed with enthusiastic internationals.

Are you looking for a free and transparent way to submit your scientific articles for peer review? Then look no further than Peer Community In (PCI). This platform, which is supported by Leiden University, is a good alternative to publication in traditional peer-reviewed journals.

Neanderthals were able to outwit straight-tusked elephants, the largest land mammals of the past few million years. Leiden professor Wil Roebroeks has published an article about this together with his German colleague Sabine Gaudzinski-Windheuser in the Science Advances journal.

Turning down the heating is good for the climate and the energy bills. But there are also a lot more ways of saving energy. In October, the University put out a call to staff and students, asking them for their golden energy-saving tips. The best entries have now been rewarded with a warm snuggle hoodie…

The new interdisciplinary bachelor's program in Science for Sustainable Societies starts in the 2025-2026 academic year.

The Night of Discoveries will take place on 20 September in the area around Hortus botanicus Leiden, the Old Observatory, Pieterkserk, the Academy Building, Old School, the Faculty Club and the PJ Veth Building.

With its FestivOWL theme, Orientation Week Leiden (OWL) promises to be one big festival for new international students in Leiden.

Glorious sunshine, dozens of enthusiastic academics and huge numbers of Leiden residents ensured that this year’s special jubilee version of 3 October University was a great success.