Biologist Nataliia Machushynets felt like she was ‘looking for a needle in a haystack’, trying to find new antibiotics to help solve the problem of resistance. During her PhD research, she did find what she was looking for, in the soil beneath our feet.

On January 1st Jasper Knoester started as our new dean. How is he doing? What exactly does he do? And what does his day look like? In each newsletter Jasper gives a peek into his life as dean.

Three fundamental research projects at Leiden in physics, chemistry and medical science have received funding from the Dutch Research Council (NWO). They involve research on magnetic fields in the universe, the role of myeloid cells in cancer immunotherapy and the evolution of ancient proteins.

On 11 January 2026, our esteemed and much-loved former colleague, Prof. Dr Marc Spijker, passed away.

In 2022, Leiden will be the European Capital of Science. An enthusiastic team from our Faculty is already busy planning the activities. Today we speak with Marin Visscher. As a project coordinator, he seeks the connection between university and society.

Festival

Not only dark matter, but also ordinary matter and dark energy are tracked in the largest ever cosmological computer simulation ever. In the FLAMINGO simulations, you can see virtual galaxies and clusters of galaxies emerging over the course of billions of years. This is no easy task: with more than…

The LUMC, Leiden University and The Hague University of Applied Sciences want to help health professionals support behaviour change in the population. Such change would help people live healthier lives and reduce their risk of disease. The Municipality of The Hague is supporting this educational project…

Give organisms like plants and animals the freedom to move, interact and meet their own needs, and they will thrive on their own, says Professor Geert de Snoo. Our interference often ends up doing more harm than good.

The Surinamese-Dutch language, Parbo Beer and, of course, football. The ‘Dear Aunt Olga’ (‘Lieve tante Olga’) exhibition focuses on the shared Surinamese-Dutch culture. Full of cheer and with life experience to spare, ‘icon’ Aunt Olga (95) leads visitors through a shared history and does not shy away…

The academic playing field is becoming more complex all the time, making a strong research support network crucial. Over 100 research support professionals shared knowledge, gained inspiration and became acquainted or got to know each other even better at the third Leiden Research Support Conference…

Arts and culture

Jasper Knoester startte op 1 januari als onze nieuwe decaan. Hoe gaat het met hem, wat doet hij precies en hoe ziet zijn dag eruit? In elke nieuwsbrief geeft Jasper een inkijkje in zijn leven als decaan.

On 4 May, Leiden University remembered the victims of the Second World War from our university community. Alumni, students and present and former staff of the University came together for this Hour of Remembrance.

During a recent event, the Leiden Institute of Environmental Sciences presented the breadth of its research on biodiversity.

Each research institute has its own dynamic. The Executive Board is visiting our institutes to find out what they are up to. On 24 June, it was the turn of the Institute for History. ‘History helps us make sense the present, whether through family stories, local issues or world politics.’

3 October University has become something of a tradition: a bit of science among the Leidens Ontzet celebrations. During the new and improved edition, the WetenschapsWarenMarkt (Science Market), visitors spoke to researchers about the nitrogen problem, making organs and the city’s connections with A…

When the tokay gecko loses its tail, a new one grows from resident stem cells at the stump. Each tissue type - muscle, bone, blood vessels and skin - develops from specific stem cells. This discovery by Luthfi Nurhidayat holds potential implications for advancing regenerative medicine in humans. Nurhidayat…

Knowledge institutions play a unique role in society and can contribute to a future-proof and sustainable world. That’s why Leiden University has signed the ‘Think green, act green’ manifesto. The manifesto is the initiative of The Young Academy and The Green Young Academy, who are calling on universities…

They are not always in the spotlight but are essential to our scientific research: Leiden research support professionals. And their network is growing and professionalising all the time. Over a hundred such professionals shared knowledge and gained inspiration at the Leiden Research Support Network…

Medewerkers van de Universiteit Leiden trappen maandag 10 maart de estafettestaking af van de Nederlandse universiteiten tegen de kabinetsbezuinigingen.

PhD defence

PhD defence

The city of Leiden has a unique combination of knowledge institutions. To ensure this knowledge flourishes and the city gains the maximum benefit from it, the Leiden City of Knowledge partnership was launched five years ago. A new partnership agreement will be signed on 11 November.

Museum De Lakenhal is displaying the smallest work of art in the world: a 3D-printed statue of Rembrandt van Rijn, made by sculptor Jeroen Spijker and researchers from Leiden University.

Conference, D&I Event

What will happen if the lights in a large part of the city are switched off? How many stars can you see without all that light pollution? This is what researchers, artists and the residents of Leiden are going to investigate during Seeing Stars Leiden on 25 September. ‘Leiden is the ideal place for…

In 2022, Leiden will be the European City of Science. The preparations are in full swing, so we would like to give you a look behind the scenes. This time we talk to Ewine van Dishoeck. She is the driving force behind the annual programme at the Faculty of Science. As far as she is concerned, there…

The League of European Research Universities (LERU) was launched in Leiden 20 years ago. LERU is a partnership of 23 leading research universities, including the universities of Oxford, Cambridge, Leiden, Leuven and Heidelberg. It celebrated this anniversary last week with a multi-day conference in…

The jade vine (Strongylodon macrobotrys) is flowering at the Hortus botanicus in Leiden. The plant started producing multiple flower clusters three weeks ago and the first ones are now in full bloom.

Learn how to use Maileon’s editor and how to follow the editorial guidelines.

On Friday 11 March (16.00 hrs.) Minister Dijkgraaf (Education, Culture and Science) will give a speech at Leiden University entitled ‘When knowledge becomes critical’. In the speech, he will address several critical challenges in science and society. The livestream will be open to all.

She stands out for the moderate tone she takes in discussions on Dutch talk shows. Without judgement you can have an open conversation, criminal lawyer Natacha Harlequin learned in her student days in Leiden. ‘What I personally think of the alleged act doesn’t matter so much.’

The Leiden Ranking – Open Edition is completely transparent. The ranking compiled by the CWTS uses open data and publishes the algorithms that are used.

Master’s students in Industrial Ecology and Governance of Sustainability have helped answer organisations’ questions about sustainability

Playgrounds often fail to accommodate children with autism, according to researchers Carolien Rieffe and colleagues. They have published an essay offering practical advice on how to make all children feel safe and welcome for Autism Week (Dutch) and World Autism Autism Awareness/ Acceptance Day on 2…

Organisation