The largest galaxies in the Universe feed off cosmic oceans, which helps them grow. This is the presumption of an international team of scientist with two Leiden astronomers, based on observations of the ‘Spiderweb’ galaxy. The researchers published their evidence in Science on 2 December 2016.

Thread-like bacteria make cells that no longer have a cell wall under the influence of osmotic stress. A remarkable discovery, since the cell wall serves as a protection barrier for bacteria. It could also help to explain how pathogenic bacteria can hide in our body from our immune system. A team of…

A new treatment for atherosclerosis showed promising results in isolated cells but proved to be less effective in initial animal tests. Bachelor student Biopharmaceutical Sciences Willemijn van der Heijden aimed to understand why. She investigated whether the formation of a protein layer around the…

When university lecturer Martine Bruil was on exchange in Ecuador as a teenager, she fell in love with the area's ancient languages. Now, more than 20 years later, she is starting a research project on the kinship of the language Awapit with the Quechua language that was spread by the Incas.

Leiden University College The Hague received the 'Top rated Programme' seal from the Keuzegids Universiteiten 2023 (Dutch University Guide). It is the tenth consecutive time the Liberal Arts & Sciences programme focusing on Global Challenges is awarded the honorary seal.

The more complex the object, the harder it is to fold up. Space satellites often need many small motors to fold up an instrument, and people have difficulty simply folding up a roadmap. Physicists from Leiden and Amsterdam have now designed a structure that folds itself up in several steps. Publication…

Astronomers led by Pieter van Dokkum have discovered a galaxy that barely contains any dark matter, which actually proves that dark matter does indeed exist. The research results will be published this week in Nature.

Last Friday, Leiden University College The Hague (LUC) celebrated the graduation of the Class of 2020 ½ and 2021. The 186 students received their Bachelor of Arts or Bachelor of Science degree’s in LUC’s interdisciplinary honours programme Liberal Arts & Sciences: Global Challenges. Under the silver-…

We talk too little about silence, thinks university lecturer Gerlov van Engelenhoven. He has been awarded a Veni grant to investigate the role of silence in protest movements. Does silence sometimes really say more than a thousand words?

Asking the way to the beach in Scheveningen or buying cheese on the market in Leiden. With the new online Dutch & More language course, prospective international students can get to know Dutch in a Leiden setting. The online course is available for international students at Leiden University and starts…

Erik Kwakkel, researcher at the Faculty of Humanities, has found an extraordinary manuscript in the University Library’s extensive collection of medieval books. The book in question dates back to the first half of the eleventh century and is made entirely out of waste left over from the production of…

On Friday, 2 December 2022, PhD candidates connected to the Institutions for Conflict Resolution (COI) research group participated in a Skills Lab focusing on the skill of writing empirical legal research papers.

What’s new, BAIS alumni? This summer, the BAIS Alumni Association hosted the yearly alumni reunion, organized in virtual format for the second time after the previous reunion also took place online in 2020. Feeling the need to compensate for the lack of in-person interaction, the Alumni Association…

The European Union has awarded a COFUND grant to a consortium of researchers from the universities of Groningen and Leiden for a collective PhD programme called ‘Evolve’. The 7.1 M€ programme, which is co-financed by the participating universities, will recruit and train 17 PhD students to conduct world-leading…

From 6-9 July, a group of young students from Edith Stein College, Rijswijk Lyceum and the Johan de Witt School travelled to New York City as part of the Van Aartsen Honours Program to present their visions of the UN to the Permanent Mission of The Netherlands. Read Alanna O'Malley's report of the t…

Ionic liquids are important in scientific research because they can apply a lot of charge over a surface. Leiden physicists have now found that the charging process of ionic liquids purely depends on opposite charges attracting each other. Chemical reactions are sometimes involved, but not essential.…

If you walk along the Hooglandse Kerkgracht in the coming months, you will see a metal box completely out of tune with rest of the landscape. It seems to have come from 'elsewhere'. The box is the results of a collaboration between the Old Observatory and incarcerated minors.

Lecture, Leiden University Environmental Humanities Series

What is Leiden University doing to make its buildings future-proof and independent of fossil energy?

Antwoord op veelgestelde vragen over onderzoek met proefdieren bij de Universiteit Leiden. FAQ

Lecture

Lecture, Teach-In Series on Palestine and Israel

Didactics

On Thursday November 15th, Leiden University organizes its Physics & Astronomy Ladies' Day for female high school students. To mark this festive day, we put the spotlight on five female researchers, who talk about their experiences working in science.

Hunter-gatherers acquire their food through complex gender-specific foraging techniques for a relatively stable and diverse supply of energy. New research indicates that this specialisation by boys and girls starts at a very young age. Most likely, this enabled the human species to evolve much larger…

The Netherlands Organisation for Scientific Research (NWO) has made a subsidy of 17 million euros available to further develop a Netherlands network for electron microscopy (NEMI). The network comprises five UMCs and eight universities, with Utrecht in the coordinating role. From Leiden, the Institute…

Researchers need to work in specialized environments when they work with dangerous bacteria and viruses. These microbes spread easily, so only in labs with a high biosafety levels they can be studied. Unfortunately, to look at the microbes properly, expensive microscopes are needed that are not always…

Each year, CML gives out three Stans Awards. The Institute's staff could nominate students and colleagues for the prices of best student thesis, best PhD paper and best outreach from the past year. Jury members Jan Willem Erisman and Nicole de Voogd made the final decision.

PhD student Doris van Bergeijk brought 40,000-year-old bacteria from mammoth poop back to life. She hopes to find new information that can help research at the Institute of Biology Leiden into antibiotics and antibiotics resistance. Read about it on European Antibiotic Awareness Day, 18 November.

A partnership with the Leiden Leadership Programme: what does it bring you? Two partner organisations in the field of sustainability, Arcadis and Bioto, share their experiences: “It's great to be surprised by new insights.”

During the final session of the PRE-University Class Security Challenges in the 21st Century, students showcased their thorough analysis of contemporary safety and security challenges. The results were impressive, according to both the teachers and the assessors: ‘You almost forget that they’re high…

A group of single-celled organisms organises its DNA in a similar way to higher organisms such as plants, animals, and fungi. However, the way packaged DNA is read out differs between the two related groups, Bram Henneman discovered. PhD defence on 5 December.

How does the government know whether science policy has the desired effect? According to Professor Barend van der Meulen, a variety of evidence about the effectiveness of science policy and proper gathering of this evidence are more important than a strict scientific method. Inaugural lecture 27 Ma…

‘To be honest, I don’t really care about what type of research is going on. Just let me do my own thing and everything is fine,’ according to biotechnical officer Davy de Witt. In this interview, he tells about his tasks and experiences at the Institute of Biology Leiden, where he has been employed…

Since the disaster in Japan, professors, staff and students of the department of Japanese Language and Culture at Leiden University have regularly been contacted by the media asking for their opinion about the events taking place there. Ivo Smits and Kasia Cwiertka, Professors of Japanese, give their…

While tens of thousands of visitors dance to deafening music, a team of Leiden psychologists are trying to collect data for their research at Lowlands. How do festivalgoers experience a virtual trip? And what role do factors such as too little sleep and whether they have experience with psychedelics…

The theme of the Heritage Open Days Leiden on 10 and 11 September is sustainability. At four University locations guides will talk about the history of the buildings and how they have been renovated. And there is a first: tours in sign language.

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.

It came as a shock to many people: one million plant and animal species are threatened to become extinct. But this number isn’t the most relevant aspect, argue Alexander van Oudenhoven, Koos Biesmeijer and three other experts in Dutch newspaper Trouw. ‘It is more important to realise that the fate of…

The Leiden Institute of Chemistry (LIC) is to be joined by a further two talented young chemists. Bela Bode and Michele Pavanello have each won a Marie Curie subsidy. Bode will be studying electron transport in photosynthesis and Pavanello will be using computer models to study charge transport in large…

Does a communal garden provide cool air and warm neighbourly relations? Does an additional row of trees increase biodiversity? These kinds of questions are key in the COMBINED project, on which Leiden scientists and residents of The Hague, among others, can work for six years with 4 million euros from…

Indonesia still has a long way to go before the country can truly flourish, was the message given by Indonesian Vice President Boediono during his visit to Leiden University on 26 March. He viewed collections in the University Library and the Hortus, and was presented with the William of Orange medal…

Children find that both dinosaur fossils and replicas belong in a museum, but they appreciate the real objects more. This is shown by research from Leiden University and Naturalis Biodiversity Center. 'Children look beyond superficial looks and attach great value to less obvious characteristics, such…

There’s a Stone Age house at Broekpolder, near the city of Vlaardingen. It wasn’t built by prehistoric people but by modern archaeologists from Leiden University and volunteers from a local initiative known as Broekpolder Federation. They used replicas of Stone Age tools, such as stone axes and chisels…

In dermatology, there should be a high level of multidisciplinary collaboration among institutes and specialists, Professor of Translational Dermatology, Robert Rissmann, will say in his inaugural lecture on 8 July. He is building an infrastructure that will put pre-clinical and clinical skin research…

How do you offer high-quality and interesting education with simple means? Universe Awareness of Leiden University spoke about this during the annual science festival in Botswana. With among others a laser experiment compiled of household materials, they showed the possibilities to interest young people…

Fancy seeing how your job is done at a university abroad? Project Managers Christina Schlüpen and Jeannette de Wolf from the Leiden Institute of Chemistry did just that. They both spent a week shadowing a European colleague: one in Bologna and the other in Berlin. This was through the Una Europe alliance,…

The new institute manager of the IBL studied biology for six months, but went in a completely different direction: development cooperation and the financial sector. Three decades later, Resi Janssen is making a radical career switch. Or isn’t she? 'In ten years’ time I want IBL to be in a new, sustainable…

A festival that combines music and science, and a digital 'time machine' for science history: four Leiden projects that focus on science communication have been awarded a subsidy in the context of the National Science Agenda.

National Meat Free Week, from 11 to 17 March, encourages us to choose the environmentally friendly option more often. But apart from preventing animal suffering, does eating less meat really make much difference? Three questions for Leiden Professor of Industrial Ecology Arnold Tukker.