The university is launching a campaign to focus extra attention on our smoke-free university locations. The University is using aptly named cigarette barrels to try to show clearly just how many cigarette filters are being saved from the environment. How harmful are these cigarette filters to the e…

From a meaningless block of plastic to an advanced component that contributes to the energy transition. The technicians and scientists of our faculty think it out in detail and make it a reality. This special project shows that they need each other.

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

‘Safe working is a form of professionalism,’ says Hugo M. Nijhof, head of the Health and Safety department. Starting next year, there will be more focus on this topic. New opening hours will be introduced for the buildings, along with new rules for working outside office hours. Nijhof: ‘Together, we…

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…

Around 1,300 Leideners found 2,265 species during the Expeditie Stadsnutuur urban biodiversity inventory. ‘It’s been a huge success’, says scientific coordinator Frederic Lens.

A pandemic of lianas is sweeping through tropical forests, reducing their ability to store carbon and limiting their role in mitigating climate change. Two recent studies from Leiden University highlight the issue. ‘We now understand why lianas are visible in satellite imagery.’

How safe are the nanoparticles in transparent sunscreen, anti-odour socks and bacteria-resistant plasters? Although microbes are present on all organisms, the tools that estimate the safety of nanomaterials still hardly take them into account. Bregje Brinkmann explored the role of these microbes during…

How can we ensure that we act climate-proof and climate-neutral? We asked climate and earth scientist and lecturer at the Climate Change course Joeri Reinders.

With his clever measuring methods Ignas Snellen – together with his team – was the first to detect carbon monoxide in the atmosphere of exoplanets. For his pioneering work the Leiden astrophysicist has been awarded the Spinoza Prize, the highest academic honour in the Netherlands. The prize of 2.5 million…

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

Damien van Puyvelde has received funding (over 47.000 euro) from a new Research Council pilot for his study 'Open-source research and the war in Ukraine: intelligence for the people by the people?' We asked the researcher five questions about this project and the opportunities this creates for him.

Hydropower plants need not be disastrous for fishermen and nature. For that, we need to place new dams more strategically, but also modify or even remove some existing ones. Valerio Barbarossa and Rafael Schmitt showed that with a computer model of the Asian Mekong basin.

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.

An evolutionary 'trap' that has haunted crested and marbled newts for 25 million years: Leiden researchers have uncovered a mysterious DNA error that should not be able to arise – yet persists all the same. How is that possible? PhD candidate James France found new clues.

Honduras recently severed diplomatic ties with Taiwan after 82 years. In doing so, the country is following the trend of other Central American countries that have turned their backs on the Asian island in recent years. Why are these countries making this choice now and what does it mean for Taiwan's…

Science thrives on freedom, safety, and stability. But what if these prerequisites are lacking? What if colleagues beyond our borders are threatened, persecuted or forced to flee?

‘If you want to implement open science, you at least need someone at each faculty who can help researchers to solve practical problems.’ Dorien Huijser spent two years managing the transition to a new working method at the Institute of Psychology’s Brain and Development Research Center.

Each year on the university’s birthday, children at primary schools in Leiden and The Hague have a lesson from a professor – about children’s rights and robots in surgery, for example. The children get to do activities. And ask questions: ‘How do you become a professor?’

A psychology degree, a career that started in the commercial sector and now a role where she feels she can make a difference. For alumnus Marisse van Os (34) everything has come together in her current job at an innovative mental health services provider.

As one prepares for the final sprint, the other stands ready at the starting blocks: in just a few weeks, Dean Mark Rutgers will pass the baton to his successor, Henk te Velde. In the meantime, both are working hard to ensure a smooth transition to a new faculty leadership. Henk is already regularly…

To read Chekhov in the ‘original’. That was what motivated Arie van der Ent to study Slavic languages and literature with Karel van het Reve at Leiden University. ‘My love for Chekhov hasn’t faded,’ says Van der Ent from his home 60 kilometres south of Kyiv. ‘But it has for the rest of Russia.’

A delegation from Leiden University visited various universities in Japan at the end of March. The strong ties between the Netherlands and Japan are still based on a long tradition of knowledge exchange.

Over 200 staff from Leiden University discussed student well-being with one another and students at the Staff Symposium on Student Well-being. In various workshops and lectures, lecturers, student advisers, student counsellors and other staff members discussed how they could contribute to our students’…

Floreat et crescat. Flourish and grow. That was what was wished for the Mathematical Institute at its opening. Now, the institute proudly celebrates its 70th anniversary. Time to reflect on how it all began. And importantly, how is it doing now?

World Heritage status comes at a cost to the local population’s human rights. PhD Candidate Sophie Starrenburg explains the drawbacks of poetic terms such as ‘the cultural heritage of mankind’.

Members of the End Fossil climate action group, including students from Leiden University, have occupied two rooms in the Lipsius building at the Faculty of Humanities today (23 November 2023).

The Leiden Academic Centre for Drug Research (LACDR) is closely connected to the education of our biopharmaceutical students, providing both courses and immersive internship projects. Among these is the Bachelor Research Project (BOO), which offers many students their first real scientific experience…

Without academic freedom, we might not have antibiotics, nor a deep understanding of human behaviour. Literary criticism, climate models, and ecological restoration would be severely limited; just like ethical reflection on artificial intelligence, justice, trauma, parenting, faith and hope. All these…

Prisoners deserve better professional support when preparing to return to society. PhD candidate Amanda Pasma: ‘You can’t imprison everyone for life. Society will have to give prisoners a second chance.’

Frans de Haas started his work at the MI with a clear mandate. Listening and talking are what he will mainly be doing ‘My role is to make sure that everyone feels comfortable in the new situation.’

International collaboration is essential to research and teaching but it also brings risks. Such as sharing sensitive knowledge and technology or foreign interference in research. Rector Hester Bijl explains what staff can do to prevent this.

Changes to halt further biodiversity loss are more urgent than ever and feasible, says IPBES, the United Nations biodiversity panel. In two reports released this week, the panel calls on governments worldwide to develop coherent policies that address biodiversity, climate change, water, food and health.…

The orbits of 27 stars orbiting closely around the black hole at the center of our Milky Way are very chaotic. As a result, researchers cannot predict with confidence where they will be in about 462 years. ‘That is astonishingly short,’ says astronomer Simon Portegies Zwart who collaborated on the r…

PhD defence

PhD defence

PhD defence

The Dutch Research Council (NWO) has awarded Vidi grants to 14 Leiden researchers. This grant of a maximum of 850,000 euros will enable them to start a new research group and develop their own line of research over the next five years.

Lecture, Hybrid workshop

PhD defence

Lecture

Leiden University strives to accommodate research talent, which is why it does its best to create an inspiring environment for PhD candidates. Therefore, we offer a training program for PhDs that is both complete and challenging. That is why we offer a training program for PhDs that is both complete…

Lecture, Tuesday Talks: Science Insights

EDGES Talk

Lecture, Comparative Indo-European Linguistics (CIEL) Seminars

Read the latest column from the Faculty Board here, with an update on the faculty's current situation and our next steps.

Three Humanities lecturers received the Senior Qualification in Education (SKO) this year. University lecturer Bruno Verbeek is one of them. What does he think makes for good education?

Are magnetic fields older than the first light? And how did they influence the development of our universe right after the Big Bang? Cosmologists from Leiden, Groningen, and Utrecht are now collaborating to investigate this.

A star does not just appear in the sky overnight. Its creation takes tens of thousands of years. Twenty years ago, astronomers took a picture of a star in its birth phase. The James Webb Space Telescope (JWST) could now capture that same star in much greater detail. This does not only provide beautiful…