Cookware handles, electrical plugs, brake pads. Unlike other plastics, these ‘thermosets’ cannot simply be melted down and reshaped, making them difficult to recycle. Chemist Roxanne Kieltyka and her team are now exploring a way to make these materials recyclable, potentially transforming the way we…

Leiden researchers have discovered an enzyme that helps bacteria feed on everyday plastics. This common enzyme could play a crucial role in future research and eventually in addressing the global plastic crisis. The study was published in Nature Communications.

Portraits that gaze at you and have moving stories to tell: HEAR ME NOW says what usually remains unsaid.

To celebrate the formal launch of the Leiden Chinese Queer Collection (LCQC, 莱顿华语酷儿文献收藏), promote Chinese queer studies scholarship, and raise the visibility of Chinese queer history and culture, the LCQC steering committee will hold a workshop on 24-25 July 2025, under the aegis of the Leiden University…

Inaugural lecture

After the summer break, the PhD training program is restarted and we are happy that most courses will be live again. Together with the lecturers, we are preparing the courses Basic programming in R, Basic programming in Python, Population Pharmacokinetic Modelling, Data management course and Introduction…

Facility

'Let's make this a twice-yearly tradition!'– a feeling shared by many after the vibrant Research Day. Engagement started early, with participants connecting informally over good coffee before the formal start of the event on 19 November.

The Aernout van Lynden Global Citizenship Award award is a recognition given by the LUC community. Each year a student who has demonstrated the qualities of active engagement, responsive and responsible participation in civic and/or community building, within and/or beyond LUC is presented with the…

All persons making use of Leiden University buildings and grounds must comply with the general University house rules. These are listed in the Regulations on the Use of University Buildings, Grounds and Other Facilities, and are intended to guarantee order and safety for guests and staff alike.

In 2023-2024 seven (teams of) teachers received a Grassroots or Grass shoots grant. Here you can read about their projects.

On this page you find video tools for educational purposes.

Workshops

Recognising our colleagues’ teaching efforts – and as a manager, taking steps to do so. Broadening our understanding of quality. Marieke Adriaanse, Professor of Behavioural Interventions in Population Health Management and Recognition & Rewards ambassador, can see that Academia is in Motion, but she…

Not all students spend the holiday season with family or friends. That is why the university is organising the fifth edition of the Winter Weeks this year. The goal remains unchanged: to offer both international and Dutch students who stay in Leiden or The Hague during the Christmas break a warm and…

Conference, D&I Event

We’ve all heard the advice about healthy workplace habits: taking regular breaks from your screen, going for the odd walk or eating lunch with your colleagues. But we don’t always heed this advice. A paradox, says assistant professor Juriena de Vries. ‘When you think you don’t have time for a break…

Facility

Social

Social

Research

How can you figure out which points lie on a certain curve? And how many possible curves do you count by a given number of points? These are the kinds of questions Pim Spelier of the Mathematical Institute studied during his PhD research. Spelier received his doctorate with distinction on June 12.

On top of the Gorlaeus Building’s bike parking sits a hidden green surprise: Leiden’s largest rooftop garden. Since this academic year, the garden has been open to all students and staff.

As Professor of Translational Neuro-oncology, Marike Broekman researches how brain tumour treatment can be improved. She will discuss this in her inaugural lecture along with her work as a neurosurgeon and the importance of a positive workplace culture.

To truly help citizens, professionals sometimes need to dare to deviate from the rules. That was the main message during the meeting on ‘rebellious professionals’ in healthcare and well-being, held on 15 October in The Hague.

A tenacious postdoc researcher persuaded Professor Marc Koper to research the oxygen reduction reaction. In Koper's eyes, there was little of interest there. But they promptly discovered a whole new way to improve fuel cells on hydrogen and oxygen. Their article appeared in Nature Catalysis on 07 Ju…

Why does a medicine work well for one person, but cause side effects in another? Research by Laura de Jong shows that it’s not just our DNA that matters – other medicines and illnesses can also affect how our bodies respond.

Wat gebeurt er op het schoolplein? Sensoren op kleding openbaren pijnlijke patronen

Facility

The Schoof cabinet has presented its budget. As expected, higher education is facing severe cuts. In the coming period, the Executive Board will regularly look at the consequences of what it deems an irresponsible policy.

Do children growing up in a jihadist or right-wing extremist household develop the same extremist views as their parents?

Professor Nira Wickramasinghe will research forgotten lineages with an NWO Open Competition grant, in particular the afterlife of Dutch slavery in the Indian Ocean World.

A month’s break from your studies, ten days of intensive rehearsals and then a concert tour: the Netherlands Student Orchestra is based on a simple formula. Leiden student Daphne Biron tells us about the orchestra and the concert in Leiden on 20 February.

Young Academy Leiden wants to bring together young academics. After all, it is not that easy in practice to meet peers outside your field. With inspiring and fun Faculty lunches, the organisation strives to connect young researchers. The most recent, hosted at the Faculty of Social and Behaviourial…

Leiden biologists have found a mutation in flour beetles that allows them to speed up their development. The study has been published in Nature Ecology and Evolution.

Are you working full-time? In that case you are entitled to 152 hours of leave per year. However, at Dutch universities, an additional 80 hours are added thanks to the collective labour agreement (cao). How does this work exactly? Emiel Turlings explains how leave works.

The Dutch police force has been deliberately storing personal data relating to millions of Dutch people for many years now. In doing so, the institution has been knowingly breaking the law. Bart Schermer, Professor of Law and Digital Technology expressed his concerns on Follow the Money – a platform…

The Neumark-Nord 2 site in central Germany, dates back to 125,000 years ago. During an interglacial period with temperatures similar to those today, Neanderthals where doing something we previously thought happened only tens of thousands of years later.

In the article “Neanderthals and Us: We’re More Alike Than Once Thought”, we are reminded that many negative traits, from unintelligent to unsophisticated, have long been attributed to Neanderthals in popular culture. However, recent studies bring to light an ever-increasing amount of evidence contradicting…

Facility

On 8, 9 and 10 October 2021 'Share the LUVE' takes place. During this graduation show the works of this year's graduates of the Visual Ethnography master of Leiden University will be screened. So mark your agenda and enjoy three days full of film, photo, artwork, exhibitions, good conversations and…

Organisation

Ava Bauer’s successor has been announced. From September 2023, Nalani Verwoord will be the new assessor of Leiden Science. Nalani is a third-year Biology student.

In Nieuwsuur ging Michael Klos, docent/onderzoeker bij de Universiteit Leiden, ging bij Nieuwsuur in op ‘de Twitterfiles’.