Whales in the vicinity of the city of Auckland, New Zealand consume large amounts of microplastics every day. A team of international researchers reached this conclusion after carefully examining whale poop. The team included Thijs Bosker, Associate Professor in Environmental Sciences at Leiden University…

175 years ago, the Netherlands took great strides towards parliamentary democracy with a revamped Constitution. Where does the Constitution stand today?

The Dutch conservative VVD party plans to make the right to family reunification more difficult for people with temporary residence permits. In Germany, this restriction led to several lawsuits which were won by status holders. Mark Klaassen, Assistant Professor in Migration Law, believes this is a…

Is polder rice a feasible circular alternative for cows on peatland? A pilot experiment started this week. On May 22nd, researchers from Leiden University and Wageningen University & Research (WUR) planted roughly 3,000 rice plants on the Polderlab near Leiden. The researchers want to test rice as a…

With a combination of incidental sunshine, torrential rain, and wind chills, weather conditions were not ideal for a hiking excursion. Even so, last Saturday, honours students braved a trek across an estate and a golf club in Wassenaar to learn about the relationship between gardens and nature. From…

Lecture

Lecture, Sociolinguistics & Discourse Studies Series

Lecture

Digital journalism is transforming the way in which information and communication technologies are used by media workers. With this change journalist practices, norms and values are also being reshaped. This is the conclusion of Tomás Dodds PhD research.

Lecture, Leiden Yemeni Studies Lecture Series

Infecting each other with viruses and bacteria while protecting yourself with medicines and vaccinations. Sounds like a fun evening, right? Master students Life Science & Technology Rafael Jezior and Dennis de Beeld certainly think so. Together, they developed ImmunoWars: an exciting card game based…

Psychologists Anna van ‘t Veer and Eiko Fried will start a scientific integrity workshop tour after the summer, called Responsible Scholarship: Psychology. Their aim: giving the subject a more prominent position in the academic’s mind.

Of je nu appt, online nieuws leest, of door Instagram scrolt, jouw gedrag wordt gemonitord. Sterker nog: wát jij ziet, wordt door anderen bepaald. Promovendus Aleksandre Zardiashvili onderzocht de impact van online advertenties en de macht van de bedrijven erachter.

How much energy and greenhouse gas emissions can Dutch homes save? Xining Yang uses Leiden as an example and shows with his research how enormous the impact can be. At least, if we work harder on becoming more sustainable. Based on the models he developed, Yang will receive his doctorate on 28 June.

Those who apply for asylum at the Immigration and Naturalisation Service (IND) are often asked about their main reason for migration. This process puts asylum seekers in a specific category, while their experiences are often much more complex and multifaceted. With his research on queer migration, PhD…

Since 2009-2010, the West viewed China as more assertive. Especially after Xi Jinping came to power in 2012, the country abandoned Deng Xiaoping’s ‘low profile’ foreign policy. Friso Stevens explains in his dissertation where this change has come from. The dissertation defence is on 28 March.

Researchers from the Institute of Psychology have secured NWO Open Competition XS grants, each worth up to €50,000. One of the projects explores how making music together can enhance cooperation. Discover more about all five research projects.

He brings order to chaos and analyses satellite swarms. During his PhD research, mathematician Oliver Nagy delved into random networks and how they reach equilibrium. Along the way, he also developed a handy tool. This knowledge is valuable for calculations related to communication networks.

Associate Professor Lettie Dorst has received a Vidi grant to research how machine translation programmes such as Google Translate and ChatGPT translate words and expressions used metaphorically. This still regularly goes wrong, resulting in far too literal, incorrect and sometimes incomprehensible…

How do you recount historic events if you are not allowed to talk about them? For his dissertation, Taufiq Hanafi tried to find out how a period of mass murder – despite heavy censorship – found a place in Indonesian literature. PhD defence 31 March.

Sustainability, health and wellbeing are key factors during the coming renovation of the iconic South Cluster of the Humanities Campus. The conversion of the original seven ‘houses’ to create a single spacious, light and attractive environment under a glass roof will earn an Excellent Level qualification…

Marion Anker is a junior curator at the Rijksmuseum, the National Museum of the Netherlands. She studied History in Leiden and Amsterdam. Together with her team, she organised the controversial exhibition ‘Revolusi! Indonesië onafhankelijk!’ What did studying History teach her?

On Friday 29 August 2025, 370 students received their Bachelor's degree in International Studies. The diplomas were awarded in the historic setting of the Pieterskerk in Leiden. Family members, friends, and staff gathered to celebrate this joyous occasion with the graduates in a packed Pieterskerk.

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…

Wars, climate change and the effects of covid have caused a global decline in children’s well-being. In her inaugural lecture Ann Skelton, Professor of Children’s Rights in a Sustainable World, points to the disastrous effects of multiple interacting crises.

Light, open and green: a description that fits the new, renovated location of the Faculty of Humanities. The official opening of the Herta Mohr Building took place on 8 October, and it has many remarkable features: for example, recycled ‘mushroom columns’, a pedestrian bridge to the University Library…

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 secular West is struggling with the rise of AI, but so too is Muslim Southeast Asia. What can we learn from each other?

Students from Leiden University have launched The Nuance Project, a platform for respectful, open-minded dialogue on divisive issues. The aim is to foster connection and understanding among people even if their viewpoints differ.

Humans and bonobos show striking similarities as well as differences when they see pictures of conspecifics. Both are more interested in photos of conspecifics that show emotion. But while our human attention is more easily drawn to photos of family members and friends that express certain emotions,…

Ward Hoskens started ten years ago as an intern at one of Leiden's most iconic buildings: the Pieterskerk. Now he is doing his PhD on the question of how the function of this 'church that is no longer a church' changed over recent centuries.

For the Bachelor Honours Class 'Mass Extinction', students produced podcasts about the past, the present and the future of mass extinctions. What exactly is lost when a species goes extinct? What are the practical consequences? But also: does humanity have the moral duty to protect other species?

Conference, Leiden University Nationalism Network

Lecture, Leiden Yemeni Studies Lecture Series

The university bid farewell to its Rector Magnificus, Hester Bijl, on 13 January during the ‘Hester’s Highlights’ symposium.

An Iron Age skull, a unicorn for cleaning your ear and thousands of beer jugs. Alumnus and archaeologist Chris Muysson has made remarkable discoveries at the Binnenhof government complex in The Hague. ‘Each puzzle piece tells us more about its history.’

What does the Dutch Ministry of Defence do to fight climate change? And what is Alumna Charlotte van Gemeren’s Role in this? We spoke with Charlotte (class of 2016) and asked her about what’s it like to do a traineeship for the Dutch Government (and how to get in), the lessons learned at International…

The Netherlands-Flemish Institute in Cairo (NVIC) is celebrating its 50th anniversary this year. Thousands of students and researchers from eight partner universities in the Netherlands and Flanders have been able to gain valuable experience in Egypt through the institute. Good reason for a celebrat…

A cannon, a sabre, guns: these Sri Lankan objects had been in the Rijksmuseum for centuries. In early December, they were returned to Sri Lanka. Associate Professor of Colonial History Alicia Schrikker led the research that formed the basis for the restitution and published a volume on the findings…

“Europe must look […] southward, where the global majority resides. The BRICS countries alone represent almost 50% of the world economy and a quarter of the world trade, it is where the youngest populations lives, with an enormous amount of creative energy, something that is often lacking in the northern…

Conference

Lecture, LUCIS What's New?! Series

Lecture, Tuesday Talks: Science Insights

Lecture