Leiden chemists recreated the bacterial capsule of meningococcus in the lab. With a few modifications, these capsules can serve as an extra safe and effective vaccine against these notorious bacteria, which can cause, for example, meningitis. PhD candidate Jacopo Enotarpi and his team published the…

It has only recently been discovered that single-celled organisms (bacteria and archaea) also have histones—proteins that structure DNA. Now, Leiden PhD candidate Samuel Schwab has found that the histones in these organisms are much more diverse than previously thought. Schwab and his colleagues describe…

Psychiatrists in Morocco can't ignore Islam. Driss Moussaoui was one of the first modern psychiatrists in this North African country. He delivered the LUCIS annual lecture on 12 April.

An international team led by Leiden astronomers has, after years of searching and defying the boundaries of a telescope, for the first time directly captured polarised light from an exoplanet. From this light they can deduct that a disk of dust and gas orbits the exoplanet. In this disk moons are possibly…

Hordes of photographers, students trying to catch a glimpse and take selfies, and cheering people at the entrance to Wijnhaven. Canadian Prime Minister Justin Trudeau and Prime Minister Mark Rutte were received like true pop stars, in the late afternoon at Leiden University’s Campus The Hague.

Is our universe built up out of warm or cold dark matter? The standard model assumes cold dark matter particles, but astronomer Sylvia Ploeckinger is now testing the possibility of a warm counterpart: sterile neutrino’s. For this project, she received an NWO Physics/F grant, a special grant for women…

In our collective journey to bridge social, economic, and cultural inequality in society, we must al play a part, says Wilco van Dijk. Unfortunately, notes Carolien Rieffe, minority groups are often not included in this 'we.' This became a focal point of discussion during the fifth Psychology Connected…

Ever since the first edition of the Science Run, the Leiden Student Running Association Currimus has delivered the winning team or the fastest runner. Now the event is back, the new batch of students must uphold the honour. The board is also forming a team: ‘During the upcoming training session, we…

A large interdisciplinary NWO research project attempted to discover the cognitive origin of the human ability to learn linguistic rules. This is not so simple, according to linguist Andreea Geambaşu and her colleagues. PhD defence on 11 December.

An international team of astronomers including Leiden professor Ewine van Dishoeck has observed the benzene molecule (C6H6) in a planet-forming disk around a young star for the first time. The observations tell us more about the forming of planets in this disc, like our own Earth. The scientists publish…

It is a holy grail among behavioural scientists: can you predict how close a group will become? An international research team from Leiden, Oxford and Helsinki has investigated the development of friendships within the Leiden student association Augustinus and obtained some remarkable results.

Leiden University has a long tradition of Asian language education. Chinese, Japanese and Korean partners are essential in providing a practical side of learning education.

The Hazelhoff Centre for Financial Law team regularly publishes in both Dutch and international academic journals and book series.

Conferences, Workshops and Lectures showcasing research and tools in Digital Humanities.

Leiden has so much to offer in the areas of sport and culture. Irrespective of whether you fancy burning off some calories after a day’s studying or perhaps spending your evenings rehearsing with an amateur drama group, you’re covered.

Fancy burning off some calories after a day’s studying? Or perhaps you’d prefer to spend your evenings on the stage? Either way, the good news is that Leiden also has a lot to offer in the areas of sport and culture.

In the 19th century, Old English poems were claimed as cultural heritage by various non-Anglophone nations, including Scandinavians, Germans and Dutch. These competing nationalistic, cultural appropriations happened against the backdrop of a growing interest in early medieval English language and literature…

Plants use sunlight to perform photosynthesis, but with too much light they have to dim their activity and protect their cells against photo damage. The protein PsbS acts as a light-stress sensor and plays a key role in this process. Article in Nature’s Scientific Reports.

On Tuesday 24 September the Marengo trial, also known as the trail against the so-called Mocro Maffia, continued behind closed doors after the fatal shooting of barrister Derk Wiersum. The main suspect is Ridouan Taghi. He is believed to be residing abroad along with several accomplices.

It seems that the Dutch Tax Offices’ Benefit Fraud Scandal has still not come to an end. New skeletons keep falling out of closets which has resulted in a parliamentary inquiry. But is such an inquiry the proper instrument to make sure that no stone is left unturned?

On Thursday 23 November, Professor Betty de Hart delivered the lecture ‘Exploring the Legal Archive on Race: Methodological Challenges’ as part of the lecture series ‘Reconsidering the Socio-Legal Gaze’ organized by the Van Vollenhoven Institute. Over 40 people attended the lecture, held online due…

This event is in Dutch. De Verenigde Naties hebben 11 februari uitgeroepen tot International Day of Women & Girls in Science. De Universiteit Leiden viert deze dag met een open publieksevenement met vrouwelijke topwetenschappers van haar bètafaculteit. Iedereen is welkom vanaf 13:30 uur in het Kamerlingh…

On Thursday 9 December, Dr Upik Djalins presented an online lecture, entitled 'The Colonial Bureaucratic Network versus the Metropole: The Origin Story of Land Alienation Prohibition in the 1870s East Indies'.

The symposium will be held on 11 June 2025 from 10.00-17.00 and is organized as a starting point for the publication of an edited volume – a selection of symposium attendants will be invited to submit book chapters.

A manifest was signed in France this week on gender neutral displays in toy stores, in the hope of preventing stereotypes and gender based prejudices. Minister van Engelshoven was rather taken with this French idea and called on toy manufacturers to evaluate their current toy collections. Which evoked…

Many hot, rocky planets outside of our own solar system started out as large, gaseous Neptunes. This is what astronomers at Leiden University contend in a recent online publication.

A European team of astronomers, led by Leiden-based researcher Konstantinos Migkas, has uncovered a large filament — a long, thread-like structure — of hot gas connecting four clusters of galaxies. This filament is made up of what scientists call the warm-hot intergalactic medium.

Academics are increasingly facing threats, harassment and hate speech following public appearances. The Dutch universities – united in the Association of Universities in the Netherlands (VSNU) – is now adopting a number of national measures, from a zero-tolerance policty to psychosocial help for vic…

On May 4, 2024, from 10.00 to 16.00 hours, a festive day took place in Oss, celebrating the fact that staff and students of the Leiden Faculty of Archeology have been doing fieldwork in and around Oss for 50 years in good collaboration with the municipality of Oss, the local heritage and archaeological…

On 1 November 2018, Rina Visser-Rotgans obtained her doctorate with her thesis on ‘Veranderend kunstenaarschap. De rol en betekenis van de kunstenaar in participatieve kunstpraktijken’ (Artistry evolving. The function and definition of the artist in participational practices of art). Rina’s research…

Special visit of seven ambassadors of the Arabic-speaking world to the University Library

On 28 January 2025, Philip Purnell successfully defended his PhD thesis at Leiden University, titled

On 3 March 2022, Cambridge University Press published An Introduction to Public International Law, a co-authored textbook led by Cecily Rose.

Strengthening the cooperation between Moroccan, other African, and Dutch institutions for higher education. This was the focus of a two-day seminar at NIMAR (Netherlands Institute Morocco) in Rabat in July, during which scholars of the African Studies Centre Leiden interacted with colleagues from NIMAR…

In response to an news article that appeared in Dutch newspaper the 'NRC

During the Opening of the Academic Year 2024-2025, we asked guests for their wishes and ideas for Leiden University's anniversary year in 2025.

Leiden archaeologists have been digging into the municipality of Oss’s past for 50 years now and students have gained their first experience of fieldwork there. What is the result of half a century of research and teaching? Archaeologist Richard Jansen and his students take us to the largest excavation…

On Thursday 10 January the annual Meijers prizes were awarded for the best published article, of each faculty research programme, written by Assistant Professors or other academic staff members. The winners received a certificate and a sum of money to spend on research.

Prof. dr. Marcel Cobussen has published a free e-pub: The Field of Musical Improvisation.

25 selected LUC students were present at this year’s first World Class The Hague event with speeches from King Abdullah from Jordan, Pauline Krikke (Mayor of The Hague) and Mark Singleton (Director of the International Centre for Counter Terrorism and former diplomat). King Willem-Alexander, Queen Maxima…

Immune system defends our body against pathogens and cancerous cells, but excessive immunity can in turn lead to tissue damages and diseases. For example, scratching the surface of the eye ignites an immune response that aims at preventing infection but can also lead to edema, angiogenesis and eventually…

Ups and downs for students from year 12 and/or vwo 6 who are selected for the Academic Challenge and the Dutch version of this challenge, the ‘Wetenschapscongres voor vwo’.

Patients with incurable breast cancer remember more information about their treatment if their doctor is more empathetic during consultations. These are the results of research by psychologists from Leiden University in collaboration with Nivel research institute. Publication in Patient Education and…

Astronomers have found complex organic ice outside the Milky Way for the first time. The discovery shows that the building blocks of life could arise early in the universe - and under a variety of conditions, said Leiden astronomer Will Rocha.

In Nature researchers at Leiden University and Utrecht University show how 47 teeth from Southern China indicate that anatomically modern humans where present at least 80,000 years ago in the region. This is 40,000 years earlier than in Europe.

A new study in Nature Plants has explored the most important organising principles that control vegetation behaviour. The insights from this study can be used to improve predictions on climate change. Leiden scientists Peter van Bodegom and Nadia Soudzilovskaia participated in the study.

On Friday, June 12th, the Europa Institute held its annual PhD Day.

On Friday evening 17 September, Leiden astronomer Joe Callingham can be seen in a new series on Discovery channel. Killers of the Cosmos is about different deadly dangers lurking in the depths of space. Asteroids, cosmic debris, electromagnetic weapons… The show takes a film-noir approach to these threats,…

The new academic year is on its way and for most students it takes some getting used to being present at the KOG every day. What about international students? We spoke with three internationals who have been studying at Leiden Law School since this academic year.

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. This time he…