How the TikTok account came across his publication remains a mystery to researcher Martín Hernán Di Marco. But he is well aware that his work has gone viral. The video has now been viewed five million times and shared more than 100,000 times.

How do you progress from an immense gas cloud somewhere in the universe to a star with planets? Research by Astronomy PhD student Martijn van Gelder sheds more light on the earliest phases of this process. He will receive his doctorate on November 24th.

Psychologen laten zich horen over de plannen om de internationale bacheloropleidingen op te heffen in de Randstad en Tilburg. Het inititatief #Ikbeneenpsycholoog van Judith Schomaker op LinkedIn vindt navolging. Lees een selectie van de posts en ook het blog van Eiko Fried over de consequenties.

Personal development, Working effectively

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…

The Moot Court Challenge Cup has been awarded for the sixteenth time! This time, it went to the best pleader in the spring of the 2024-2025 academic year.

The nominees for the IRO Thesis Prize 2024 and the Prof. Dr. J.Th.J. van den Berg-prijs 2024. Who authored the best thesis in Leiden University’s bachelor’s programme in Political Science?

‘What if we switch off all the lights one evening? That idea crossed my mind from time to time. And when I mentioned it to a taxi driver one day, he said: “Oh, you mean: lights out, stars on!” That’s not completely true, of course, because the stars are always on, but his phrase summed up the idea n…

Lecture, Studium Generale

Since 24 March, the Kamerlingh Onnes Building of the Faculty of Law has been full of hundreds of colourful jellyfish. But behind that enchanting sight is a serious message: the exhibition symbolises the loss of biodiversity in the oceans due to climate change.

The cargo lost at sea as a result of the MSC Zoe disaster should be considered environmental pollution and information about it should be made public. This was the case made by Leiden Law School’s Leiden Advocacy Project on Plastic (LAPP). Following their investigation, the government has finally decided…

The Schoof cabinet has presented its budget. As expected, higher education is facing severe cuts. In the coming period, the Executive Board will regularly look at the consequences of what it deems an irresponsible policy.

Every Sunday you can help fish plastic and other floating garbage out of the Leiden canals. You can use your own canoe or loan one from Plastic Spotter and join the garbage-fishing fleet. Annetje Ottow, President of Leiden University, was one of the crew on Sunday 4 July.

On Wednesday 1 September, the first thirteen students of the new BA Urban Studies at Leiden University, received their diplomas in person in The Hague. During a festive graduation ceremony, they were congratulated by rector magnificus Hester Bijl.

Underwater noise from seismic surveys affects the behaviour of Atlantic cod. These are the results of research by Leiden biologists in collaboration with colleagues from Belgium. During such surveys the fish are less active than usual and their circadian rhythm is disrupted; soon after exposure they…

Each year a staggering 18 billion chickens, turkeys, pigs, sheep, goats, and cows either die or are killed without making it onto someone's plate. Environmental scientists Juliane Klaura, Laura Scherer, and Gerard Breeman were the first to calculate this number on a global scale. 'Reducing these numbers…

How wonderful would it be to use art, technology and science in Ukraine's recovery? Young Ukrainians currently residing in Poland get guidance to develop creative programmes and activities that can later be implemented. Leiden astronomers Pedro Russo and Kateryna Frantseva cooperate in the project.

Student of International Studies Susanne Reitsma has a remarkable passion: water. In April 2015, she was elected vice president of the World Youth Parliament for Water, in which capacity she works for worldwide access to clean drinking water and sanitation. What does Suzanne find so special about water?…

At Leiden University many staff members and students value making sustainable and responsible choices in their personal lives. Making these choices in our professional lives may feel a bit more complicated. But is that feeling justified? Archaeologists Gerrit Dusseldorp and Roos van Oosten share their…

Buurtlab 070 is a new Leiden University project in which residents, researchers and students from The Hague work together on climate, sustainability and biodiversity solutions. What do they expect of the lab?

Countries that import plastic waste recycle an average of at least 63 percent of it. This is surprising, as we previously believed that the vast majority was incinerated or ended up as litter. This was discovered by PhD candidate Kai Li and his colleagues from the Institute of Environmental Sciences in…

LUNHA strives to redefine global health by prioritizing justice, fairness, and inclusion in Africa. Through collaboration with diverse stakeholders, LUNHA aims to reshape global health research and foster a broader engagement with social sciences and humanities.

Autism spectrum disorder, or ASD, is the term for a range of neurodevelopmental conditions or differences which can impact your studies at Leiden University.

Dyslexia is a learning disorder which is common among students and can impact your studies at Leiden University.

AD(H)D stands for Attention Deficit(-Hyperactivity) Disorder, which is a common disorder that can impact your learning at Leiden University.

Lecture, Studium Generale

Over the course of the 20th century, politicians increasingly came to rely on experts. Their language was peppered with terms like ‘policy pathways’ and ‘evaluation frameworks’. This made debates more abstract and less ideological.

With the retirement of Wil Roebroeks, Gerrit Dusseldorp will take his place as the archaeological representative in the Liveable Planet Interdisciplinary Programme as an Associate Professor. An expert on the behaviour of early human hunter-gatherers, he will look at the interaction between humans and…

Ships are still emitting too much nitrogen oxide. Till now it has been impossible to measure this at sea, but that is set to change. Solomiia Kurchaba combined satellite data and developed algorithms to identify which ships are emitting too much. Kurchaba received her PhD on 11 June.

After years of lobbying by environmental activists, a deposit scheme for small plastic bottles is to be introduced on 1 July 2021. One of the leaders in the fight is alumnus Merijn Tinga. The university will have collection points for plastic bottles and is also supporting the Plastic Spotter citizen…

The new interdisciplinary bachelor's program in Science for Sustainable Societies starts in the 2025-2026 academic year.

For a long time, Thijs Bosker was an average student, until he discovered how exciting learning becomes when there are no ready-made answers. To his students, he passes on one key message: hope is the driving force that keeps us moving forward. They nominated him as Lecturer of the Year.

Research

In the ‘Imaginary’ exhibition, its curators show how society is made up of mathematics. From algorithms that save lives to ones that generate art. The exhibition is from 2 June to 25 July at Oude UB in Leiden.

Several media published articles on the latest research from a team including Thijs Bosker, Associate Professor Environmental Sciences, last week. The research has shown that whales in the vicinity of Auckland New Zeeland consume three million microplastics a day.

A programming competition in Minecraft? It really exists! And even better news: this time LIACS’ student team Mike's Angels achieved the first place! The team has been rewarded $500.

How would you convert Egyptian hieroglyphs into Latin script? And what is actually the correct translation of dishes on a Vietnamese menu? On Saturday 28 January, high school students from all over the Netherlands will come to Leiden to ponder a series of language-related puzzles. Their goal? To win…

The film Blade Runner as part of the law curriculum? It’s not that weird to Maartje van der Woude, Professor of Law and Society, and Frans-Willem Korsten, Professor of Literature, Culture and Law. ‘The film raises a fundamental question: what’s a human and what’s not?’ From the next academic year onwards,…

Leiden University and Stadslab Leiden invite you to improve the Leiden and The Hague environment with 450 extra trees – a living reminder of 450 years since the Relief of Leiden and the foundation of Leiden University.

Professor of Fungal Genetics and Biotechnology Arthur Ram explains how fungi can help us be more sustainable.

Finally we know for sure that there is a black hole at the centre of our own galaxy. Today, astronomers unveiled the first ever photo of Sagittarius A*, a super-massive object at the centre of the Milky Way. This picture could only be taken thanks to the cooperation of telescopes worldwide.

Leiden researchers have discovered an enzyme that helps bacteria feed on everyday plastics. This common enzyme could play a crucial role in future research and eventually in addressing the global plastic crisis. The study was published in Nature Communications.

The Herta Mohr Building is leading the way in sustainable innovations, for both Leiden University buildings and beyond. It is the university’s first fully gas-free building and the new Thermal Energy Storage system alone will cut carbon emissions by 150,000 kg per year. The building has an ‘Excellent’…

On 1 September, Ad Maas, curator of Rijksmuseum Boerhaave, was appointed professor by special appointment. In this role, he will primarily focus on the representation of natural sciences in museums.

After a gap of five years, Leiden has a new Professor of Modern China. Florian Schneider started his position on 1 September.