From researching plastic pollution to caring for injured wildlife, volunteers play a crucial role in conservation. But much of the valuable knowledge they gather remains unused.

Leiden University and African Child Policy Forum hold ‘ground-breaking’ workshop on antimicrobial resistance (AMR) and human rights in Africa

‘Working in Leiden is a dream come true.’ Ákos Kovács studied in his birth country Hungary and worked in Germany, Denmark and Groningen. As professor of Microbiome Ecology at IBL, he immediately started working together with his new colleagues to make discoveries about the versatile bacterial species…

The international Planetary Health Alliance network is a consortium of more than 450 organisations committed to addressing the health impacts of global climate and environmental change. Planetary Health education coordinator Laura Warmerdam explains why our university recently joined and how this will…

Ten Leiden museums and heritage institutions have curated the online exhibition ‘Carel’s Universe’. They selected objects from their collections that symbolise retiring Rector Magnificus Carel Stolker and the research in Leiden. With direct references, playful associations and the odd nod and wink.

Leiden academics Remco Breuker and Auke-Florian Hiemstra stand to win the title of Person of the Year.

A rapid increase in the demand for construction sand is driving shortages and inequality around the world. Researchers from the Institute of Environmental Sciences at Leiden University have mapped the growing need for sand, as well as the bottlenecks and possible solutions. They have published their…

Botanisch filosoof Norbert Peeters vertelt over hoe mensen omgaan met planten in het algemeen, en met onkruid in het bijzonder.

A plant-based diet could improve the resilience of our food system. Moving to such a diet in the European Union (EU) and United Kingdom (UK) alone could replace almost all the production losses from Russia and Ukraine. That’s what an international team of researchers conclude in Nature Food. Leiden…

Is polder rice a feasible circular alternative to cows on peat soil? In May, an experimental trial began, with researchers from Leiden University and Wageningen University & Research (WUR) planting around 3,000 rice plants at the Polderlab near Leiden. The researchers aimed to test rice as a middle…

Maarten Schrama (CML) has won the Teacher of the Year Award 2021. During a lunch with fellow nominees, Schrama received a cheque worth 5,000 euros from student assessor Joost Barendse to spend on educational activities.

The pesticide thiacloprid turns out to be more harmful than previously thought. It can disrupt the lives of freshwater invertebrates and their communities, upsetting the balance and functioning of entire freshwater ecosystems. This was shown by ecologist Henrik Barmentlo and colleagues, their research…

Leiden University is going to offer two new Economics degree programmes at its campus in The Hague: the bachelor’s in Economics and Society and the master’s in Public Sector Economics. The NVAO has decided to award accreditation to both programmes, which will be taught in Dutch. The bachelor’s programme…

Leiden University’s Living Lab is moving to the middle of the Leiden Bio Science Park. In the lab’s new home between the University of Applied Sciences, Mentor and Naturalis Biodiversity Center, the first ditches have now been dug. This new location is more accessible to both researchers and the public.…

Leiden is European City of Science in 2022 and this will be celebrated under the name Leiden2022. During Leiden2022, various activities will be organised, such as lectures, workshops, excursions and exhibitions. On the occasion of Leiden2022, Postbus 71 will be opened: the place to go if you have any…

Leiden University will share impactful research and teaching with policymakers, businesses and the general public at the Impact Fair in Utrecht on Thursday 3, Friday 4 and Saturday 5 April. Visit our stand, meet over a hundred inspiring exhibitors – and get a discount on your ticket.

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’…

From monitoring pollution to tracking rainfall, citizen science comes in different shapes and sizes. But at its heart, it’s about the relationships between citizens, policymakers and researchers.

As of 1 September, archaeologist Amanda Henry has been appointed Full Professor at the Faculty of Archaeology, where she will hold the chair in Evolution in Hominin Diets. The appointment marks a new chapter in her academic journey, building on her longstanding research into ancient human diets and…

Hans Slabbekoorn is specialised in animal sounds. On 1 July, he was appointed professor of Acoustic ecology and behaviour. A great honour, according to the new professor. ‘This job never gets boring, whether I am investigating the urban jungle or marine noise.’

Dr Mamadou Hébié, Associate Professor of International Law at the Grotius Centre for International Legal Studies, served last week as legal counsel in the world’s first advisory proceedings concerning climate change before the International Tribunal for the Law of the Sea (ITLOS), on the one hand, and…

In the academic world interest in interdisciplinary research is growing. It can help to solve the big challenges of our times. But starting a research project that covers several disciplines is not always easy. This was one of the conclusions at a Young Academy Leiden (YAL) symposium. What are the c…

How can you do your bit for sustainability? Students from Leiden University have launched an interactive website with 150 sustainable initiatives in and around The Hague. The website Sustainable The Hague makes it easy to find a sustainable shop, restaurant or community initiative in your local area…

Leiden University is a fantastic example of a network university: we create an impact with the city, stakeholders and regional and international partners. The lines of communication are really short and there is a great sense of togetherness. Our good relations with the city have also informed how we…

Inviting members of the public to help monitor wildlife, photograph plants or conduct samplings. These are some of the many examples of Citizen Science. It is increasingly recognized as effective and impactful for collecting data, but also for engaging the public in scientific research. In Nature reviews…

Leiden University will not enter into any new research partnerships with companies in the fossil fuel industry that are not intensively and demonstrably committed to achieving the goals of the Paris Agreement. Current projects can, however, be completed.

More efficient use of phosphorus fertilisers would make it possible to meet food demand in 2050, without using more of the world’s land for agriculture. This is what environmental scientists José Mogollón and colleagues have discovered by working out various future scenarios for food production and…

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…

Leiden University has joined the Hague Climate Agreement. This comprises 38 climate deals aimed at making The Hague climate neutral by 2030.

After an intensive tender procedure, Leiden University and the Municipality of Oegstgeest have chosen Dura Vermeer for a new housing development with plenty of affordable homes in Nieuw Rhijngeest-Zuid. Dura Vermeer seeks to create a green and playful neighbourhood with welcoming public spaces as its…

Sustainability challenges don’t just call for environmental scientists – they require expertise from many academic fields. Thijs Bosker and Paul Behrens have made it easier for university lecturers to integrate sustainability into their courses. Their initiative, Local Actions, offers ready-made teaching…

Facility, Organisation

The new Dutch government must act quickly to take rapid, far-reaching measures in three specific regions to tackle nitrogen emissions. This will create the space for a long-term strategy to deal with other urgent problems and the knot of obligations that the state will need to untangle. These are the…

The Dutch Research Council (NWO) has rewarded four projects in which Leiden researchers are bringing science and society closer together. What are these projects?

The year 2023 saw the earthquake in Turkey and Syria, the Wagner Group rebellion and wildfires and floods as all the weather records were smashed. Our most-read stories were about the climate crisis and the elections: here’s the list.

Why is the sky blue? Why are most people right-handed? Why are spiderwebs so strong? These are just some of the questions arriving at Postbus 71, a Leiden2022 project where everyone can ask their questions. Friso de Hartog, the driving force behind Postbus 71, is busy answering as many questions as…

As part of the TerraNova project, a European research initiative on the study of landscape histories and futures, a Massive Online Open Course (MOOC) was developed. Anastasia Nikulina was one of the main chapter coordinators who worked on this course, and she worked on the part about modelling in landscape…

2024 was an eventful year for the Faculty of Humanities. Despite becoming the centre of political discussion and budget cuts as faculty ourselves, exceptional research projects were carried out and new initiatives were launched.

The teams that will lead the themes guiding Leiden University’s strategic positioning in the coming years have been formed.

Researchers at the Faculty of Science work at the frontiers of knowledge every day, tackling today’s major societal challenges. Their work is recognised through grants, prizes and other awards. We highlight some of these achievements.

Ecologist Pengxuan Xie investigated whether rooftop farming can contribute to food production in cities. This is important now traditional food supply chains are vulnerable to disruptions.

If Europeans eat less meat and dairy, this will have major consequences for farmers. New research shows that many barns and machines could lose their value. With the right policies, these losses can be limited. This is shown by research from Leiden, Oxford and Vienna.

Following a highly successful first edition, we are delighted to announce the second Leiden eLaw Summer School on ‘Regulating AI in the EU Digital Market’ taking place from 23 to 27 June 2025, both in person in Leiden and online.

NWO (the Dutch Research Council) has granted more than 10 million euros for five human-centered AI research projects (2.1M€ each). Leiden University participates in two of these five research proposals, which are called ELSA labs.

Like spoken languages, sign languages evolve organically and do not always have the same origin. This produces different ways of communication and annotation. Manolis Fragkiadakis wrote his PhD thesis on this.

In January, Dr Karsten Lambers was appointed as Professor of Digital and Computational Archaeology at Leiden University's Faculty of Archaeology. With his extensive background in both archaeological research and computational sciences, the installation of Professor Lambers further strengthens this discipline…

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.

Language can be a time machine: we can learn from ancient texts how our ancestors interacted with the world around them. But can language also teach us something about people whose language has been lost? PhD candidate Anthony Jakob investigated whether the languages of prehistoric populations left…

As professor of computer science at LIACS and programme director of incentive programme SAILS, Joost Batenburg knows better than anyone what is going on in the faculty. Over the past three years, he learned at lightning speed what is going well and where sensitivities lie. 'We need to move more towards…

Are you keen to beat your friends or colleagues and win the European Championship football pool? Statistician Marjolein Fokkema has some tips that might increase your chances.