Xander Tielens, Professor of Physics and Chemistry of the Interstellar Space, has been awarded an ERC Advanced Grant to study polycyclic aromatic hydrocarbons (PAHs) in space. The combination of astronomical observations, computer models and lab research makes the research highly interdisciplinary.

After three (or four) years of hard study, there are every year a lot of Bachelor students that say goodbye to go and explore the wide world. Where are they going next? And what will they miss most about our beautiful city? For the coming weeks, we will tell the stories of 6 recent Bachelor graduates…

What clothing is best to buy if you want to consider the environment? That question isn't so easy to answer. You have to consider the entire life cycle of a garment: from production to the moment we dispose of it. In the segment 'What's better?' of the radio programme Living Planet, environmental scientist…

More than a hundred people took part in the conference on Studying with a Disability on 20 April. Dozens of students shared their experiences. 'I would rather you ask me the same question a hundred times than that you decide on my behalf.'

The JEDI Fund supports projects that promote diversity and inclusivity within the university. One of these projects is the card game called ‘What’s Your Story?’, developed by university lecturer Tingting Hui.

Young people being deployed to carry out explosive attacks: how do they come into view, and what motivates them? The podcast 'Action/Reaction: From Attack to Approach' by the research project Close Protection and Surveillance and researcher Sheila Adjiembaks takes a closer look at why and how young…

When do we define a piece of nature in the city as a park? And when is something a tree or shrub? It may seem obvious, but in scientific literature the definitions vary quite a bit. That makes comparisons difficult. Environmental scientist Joeri Morpurgo looked at the differences and designed a general…

In this article, Thomas Maguire, assistant professor at the Institute of Governance and Global Affairs, examines the intelligence of the US, British and Ukrainian governments and NATO partners concerning Russia and its war against Ukraine. This article discusses how and why governments communicate intelligence…

Big Science, commonly defined as conventional science made big in three dimensions, namely organizations, machines, and politics, brings a plethora of different stakeholders together, often for a long period of time. This includes policymakers, scientists, (scientific) managers as well as local “host”…

Animal diet studies are critical for understanding ecological processes such as trophic interactions, energy flow, and nutrient cycling. By examining what animals consume, ecologists gain insights into species specialization, predator-prey relationships, and ecosystem management.

A comparative study in the History of Modern Philosophy focused on the recourse to physiology on the part of two key figures, Spinoza and Nietzsche.

In this article, Dimiter Toshkov investigates the determinants of COVID-19 vaccine hesitancy and refusal, focusing on Eastern, Southern and Western Europe.

Jos Winnink will defend his PhD dissertation, entitled “Early-stage detection of breakthrough-class scientific research”, on Wednesday February 22, 2017 at 3 pm. The two PhD supervisors are Prof. dr. Robert Tijssen and Prof. dr. Anthony van Raan (both at CWTS, Leiden University).

In the Netherlands it is now possible to visit non-essential shops if you make an appointment beforehand. But when you book an appointment you have to provide a lot of personal data. Are shops allowed to ask you for all this data and what happens to it?

Almost 7,000 prospective students came to Leiden last Saturday to visit the Open Day. They came from all corners of the Netherlands and even from abroad to start the process of choosing a degree programme. At the Information Fair in the Pieterskerk they were able to ask students and study advisers all…

On 13 September 2016 a symposium and drinks reception will be held to mark the departure of Professor Rikki Holtmaat. On 1 September she had been affiliated to the university for exactly 31 years. What does she remember most about this period and what are her plans for the future?

The Trojan War plays an important role in Greek mythology. But there is much more to Troy than mythology. The exhibition ‘Troy. City. Homer. Turkey’ can be viewed from 7 December to 5 May 2013. Leiden linguist Alwin Kloekhorst wrote an article for the exhibition catalogue on the language of Troy.

Public agencies are keen to use new technology such as AI to speed up their primary processes. But the internal organisation is often a major stumbling block. SAILS researcher Friso Selten conducts research at the interface between data science and public administration.

More than 10,000 school-leavers and their parents visited the Open Day at Leiden University on 25 February. The prospective students were given information about the different programmes in Leiden and The Hague. 'I'm curious to hear about their experiences.'

Stefan de Jong is Knowledge Broker at Luris. But what does Luris actually do? And what is a Knowledge Broker? This week we take a closer look at Stefan’s work.

Rianne Vink, one of the student counsellors, explains what a student counsellor does.

And that is what scientist Rens Meerhoff of the Leiden Institute of Advanced Computer Science (LIACS) explains in the NPO Radio 1 programme Focus. He researches football tactics on the basis of position data of footballers and charts how physically and mentally fit a footballer is. He also explains…

It’s impossible to avoid, even in the Netherlands: the US will soon be going to the polls. Where does it come from, this fascination with US elections? PhD candidate Bram Eenink explains.

Two directors. Both professors of mathematics, but one of them is a biologist. One comes, and the other goes. Roeland Merks will succeed Arjen Doelman as director of the Lorentz Center in September. What has been accomplished and what are the plans? And above all, what makes the Lorentz Center so un…

Leiden's city centre, bathed in autumn sunshine and teeming with visitors. On 14 October, several thousands of students and their parents came to visit the University's Open Day. We spoke to a number of students at the information fair in the Pieterskerk; each of them had their own questions, doubts…

Do you already know what comes next after your PhD? Are you wondering how to accomplish the transition from academia to the labour market? Join our PhD Career Event!

With the What's Next? series we hope to inspire current Media Technology MSc students, show the variety of paths taken after the studies, and bring together alumni. Editions of the series are generally organized around a particular theme by Media Technology MSc students themselves, and followed by social…

What’s it like to study a certain programme within the Faculty of Humanities at Leiden University? These prospective students found out during the Experience Day on Friday 6 April. They had a taste of the faculty’s atmosphere and discovered what study programmes are actually about.

Today is the general election in the Netherlands – although the polling stations have actually been open for two days already because of the coronavirus restrictions. Leiden researchers and students are involved in all manner of ways, and are analysing the campaigns and possible results.

The Master's Day on 4 November was very busy. Prospective students visited the many presentations and bombarded the guides with their questions.

Thousands of school leavers came to Leiden between 29 March and 1 April to experience what it's like to study at university. Students at the Criminology and Psychology departments share their experiences. 'I know the subject I want to study, but I'm not sure about the university. That's why I'm here…

What is it like to be a Leiden University student at Campus The Hague? These prospective students found out on the Experience Day of 30 March.

113 Suicide Prevention gave a guest lecture about suicide prevention at the Spanish Steps in Wijnhaven

With the What's Next? series we hope to inspire current Media Technology MSc students, show the variety of paths taken after the studies, and bring together alumni. Editions of the series are generally organized around a particular theme by Media Technology MSc students themselves, and followed by social…

Starting with the ‘why’, putting herself in her students’ shoes and providing structure. These are three ways in which environmental scientist Ranran Wang tries to make her course as interesting and manageable as possible. With success: she has been nominated for Science Teacher of the Year 2022.

Turkish politics was shaken by the arrest of Istanbul mayor Ekrem İmamoğlu, along with dozens of others from the main opposition party.

Human activity at sea makes a terrible racket. To what extent does this disturb marine animals? PhD candidate Annebelle Kok studied the effect on harbour porpoises, long-finned pilot whales and their prey, and discovered the sheer complexity of the problem. PhD defence on 12 November.

As an international employee at Leiden University, it can be hard to settle into the workplace, the city, or generally, the Netherlands. The Leiden International Centre can help international employees land comfortably and make living abroad just a little bit easier. Jenny Willcock, coordinator at the…

This semester we again organize the elective Nitrogen and Sustainability for 36 master students mainly from Industrial Ecology and Governance of Sustainability. The course helps the students to understand the complexity of the Dutch nitrogen crisis and the role different stakeholders play.

What happens in our bodies when we care for children? And why are some people more caring than others?

In Freedom Stories we share the freedom stories of our students and staff, in honour of Liberation Day in The Netherlands. Today, we share Leen's story. We asked her, what does freedom mean to you?

Biodiversity in the Netherlands is having a tough time. Professor of Natural Capital Koos Biesmeijer combines research with practical advice: from the greening of industrial parks to solutions inspired by hi-tech nature. Inaugural lecture 9 March.

The Russian threat to Europe, pro-Palestine protests, the passing of psychologist Andrea Evers and speculations on extraterrestrial life. These were among our most popular articles of the year.

The Open Day of Leiden University, on Saturday, October 19, 2019 was busy, in a pleasant way. More than 12,500 prospective students and supervisors visited the information market in the Pieterskerk. There, and at other locations, they were informed about the studies they preferred during countless presentations…

What if a major world event alters the trajectory of your research project? Tsolin Nalbantian was studying citizenship along the Turkish-Syrian border when the Syrian Civil War erupted and led to a global refugee crisis. While her research participants were forced to flee the region, she was forced…

Will you be coming to study at our university? If so, we want you to feel welcome. We therefore offer three different introduction weeks, with something for everyone: one in Leiden, one in The Hague and one for internationals. Register soon!

What’s at stake at the NATO summit in The Hague? Three academics from Leiden share their insights.

How can we improve the everyday sounds of the city? In his inaugural lecture on 28 November Marcel Cobussen, Professor of Auditory Culture, advocates using the expertise of sound artists to raise the quality of acoustic environments in cities.

Sexual harassment was the theme of the recent annual symposium of student ambassadors to the Leiden-Bollenstreek police in collaboration with the police and the municipality. An extremely important issue to students − if the 100 places being claimed as soon as the symposium was announced was anything…

From applied to fundamental research, and from algebra to data science, our master’s programme spans these fields entirely. You will be able to follow courses from the national Mastermath programme and write a thesis in one of our strong research groups in algebra, number theory and geometry; dynamical…