An unexpected phenomenon in a merger of a cluster of galaxies. An international team of astronomers led by Francesco de Gasperin has witnessed a gas tail of a galaxy, that slowly extinguished, but then lightened up again

It is one of the energy carriers of the future: hydrogen. But how can hydrogen be produced in a sustainable way? With over 50 million euros in funding from the Netherlands Organisation for Scientific Research(NWO) and industry, a research project involving 58 partners from both the Netherlands and abroad…

Sterre ter Haar has won the Rachel Carson Graduation Prize for her thesis on how rising levels of CO₂ affect the nutrient content of plants. For the Industrial Ecology student, the award is a crowning achievement after a difficult period of recovering from long COVID.

Two of our colleagues received a royal decoration. Professor Jo Hermans became “Ridder in de Orde van Oranje Nassau”, and Professor Jan Schmidt became “Officier in de Orde van Oranje Nassau”. They receive the decoration as an acknowledgement for their extraordinary and selfless contribution to others…

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’…

Leiden Professor of Astronomy Mike Garrett is searching for signs of extraterrestrial intelligence. In his Kaiser lecture on 23 April he will discuss how far science has progressed in this quest.

We asked a lot of everyone last year. The Personnel Monitor showed that the workload was high in 2022 and Covid took its toll. I therefore think everyone deserves some downtime. Time away from the daily grind.

More than 60 European researchers and industry partners have set out their roadmap for the application of graphene in marketed products. Leiden chemist Grégory F. Schneider believes that graphene and other layered materials can in the future be used for DNA sequencing applications.

Can you prove whether a large quantum system truly behaves according to the weird and wonderful rules of quantum mechanics — or if it just looks like it does? In a groundbreaking study, physicists from Leiden, Beijing en Hangzhou found the answer to this question.

Electrochemist Marc Koper has won a special award: the Allen J. Bard Award in Electrochemical Science. 'Allen Bard has always been a great example to me, so it is extra special to win this award.' The award will be granted by the Electrochemical Society, at their half-yearly conference next year in…

How does Leiden University save energy? Could we organise our recycling better? Do our study programmes devote sufficient attention to the importance of sustainability? And how do we address this theme in our research? These and other questions are answered in Leiden University’s Sustainability Report…

A CT scanner to treat eye cancer, energy-efficient software for the future and a test to identify male chick eggs. Three projects by researchers from Leiden University are to receive funding from research funder NWO’s Open Technology programme, to which the business sector also contributes.

On May 13 2022, Frans W. Saris will present the third of a series of "Hello World!" lectures, organised by the Media Technology MSc program of Leiden University. In his lecture titled "Computer Modeling to Save the World", Frans Saris addresses three alarming crises: energy and climate, biodiversity…

Scientists at Leiden University (Netherlands), Stuttgart University (Germany) and Ural Federal University (Russia) have successfully put forward a novel, computed, reaction mechanism that was experimentally tested and show that formaldehyde is formed at much earlier stages in the birthplaces of stars…

Speculation about alien life, a new nitrogen map, AI as a thesis supervisor, groundbreaking telescopes and multi-million-euro investments to combat antimicrobial resistance – the diversity of these topics shows that our readers are just as broadly interested as our researchers. Discover the most-read…

Marc Koper has been selected as one of the six new fellows in 2015 of the International Society of Electrochemistry.

Dieselgate, privacy violations by TikTok, increases in energy prices: reports of mass damage lawsuits are a regular occurrence. These lawsuits raise many interesting legal questions. A new handbook sheds light on these issues.

On 21 April 2022, the Democracy and Citizenship thematic stream organized a seminar which focused on the question of citizenship under conditions of global crises. Three researchers presented their work during this seminar: Marion Collewet “Participatory Value Evaluation of policy options for the…

Flying is cheaper than driving a car, but a disaster for the environment. Yet few politicians dare to levy excise duty on kerosene. This is only one example from a world where emotions and yelling are burying facts, and in which scientists lose connection with society.

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…

The sustainable production of hydrogen could potentially be made more efficient by adding a cleverly chosen salt to the process. Researchers at the Leiden Institute of Chemistry (LIC), in collaboration with physicists at the University of Twente, have discovered that the type of salt present in the…

Simulations of galaxy formation provide much more information about galaxies than a telescope. Simulations have been improving significantly in recent years. Astronomer Evgenii Chaikin made such a significant contribution to this field that he graduated with honours on February 27th.

Cutting down global emissions of greenhouse gases to combat global warming won’t do the trick alone: we also need negative-emissions technology that can capture carbon dioxide directly out of the air. In the prestigious journal Global Environmental Change, PhD candidate Oscar Rueda and colleagues shed…

What if particles don’t slow down in a crowd, but move faster? Physicists from Leiden worked together and discovered a new state of matter, where particles pass on energy through collisions and create more movement when packed closely together.

Three Leiden professors have recently been awarded the most prestigious scientific accolade in the Netherlands: Maria Yazdanbakhsh and Marc Koper have been awarded a Spinoza Prize and Judi Mesman a Stevin Prize. They received their prizes on 13 October.

Shell cooperates with theoretical physicists and chemists of Leiden University to research how quantum computer algorithms can help simulate complex molecules.

Western countries still tend to view Africa as the periphery, says anthropologist Mayke Kaag. In her inaugural lecture, she calls for a shift in perspective: to see Africa as a mirror of global developments.

During the Bachelor Honours Class ‘The world is quantum’, students from various disciplines learned about the rules of nature on the smallest scale: quantum mechanics. What opportunities and dangers do they see for their field of study?

Director General of ESO, Tim de Zeeuw received President of the Republic of Chile, Michelle Bachelet Jeria for a ceremony marking the first stone of ESO’s Extremely Large Telescope (ELT).

The first Scaliger Medal was presented on 19 September to Leuven Professor Kurt Deketelaere, President of the League of European Research Universities (LERU). He received the award in recognition of his tireless commitment to promoting European research.

The Institute of Psychology is responsible for innovative and interdisciplinary research and education within psychology and related disciplines.

The activities of the Europa Institute (also known as the Department of European Law) are supported by ‘Stichting Europees Instituut’. This foundation was the first of its kind in both the Netherlands and Europe as a whole. Established in 1957, its aim was to ‘support and advance the study of scientific…

Leiden University is actively involved in various university networks worldwide.

Electrolysis is a technique that can be used to convert CO2 into fuels and other useful products. To do this efficiently and on a large scale, however, we need to understand exactly how electrolysis works. Professor Marc Koper is an expert in this field.

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Course, Summer School

The organising committee of the congress 'Social Benefits of Higher Education' has decided to postpone the congress.

The CEES Centre regularly hosts (guest) lectures, roundtables, and film screenings.

The Mycenaean civilization of ancient Greek times offers enormous potential for useful information: from innovative construction methods to ways of handling crisis situations as a society. Archaeologist Ann Brysbaert and her team analyse Mycenaean construction processes in the ERC Consolidator project…

Exponential population growth and rapid urbanisation are prompting the development of gigantic African metropolises that must be supplied with resources such as food, water and energy. This creates economic opportunities, drives migration and presents political challenges. Researchers from Leiden combine…

People are less willing to give up an interest when in a negotiation situation than when they can do it of their own free will, as Leiden University psychologist Eric van Dijk discovered. Knowledge of this kind can be used by policy makers, for instance, to motivate people to adopt certain desirable…

The relationship between States and foreign corporations are regulated by international economic law and international investment law in particular. Any disputes between States and foreign corporations must therefore also be solved by reference to this body of public international law, for example when…

Apps that can precisely identify shards, coins or heel bones: archaeology has embraced artificial intelligence. Alex Brandsen is working on a search engine that scans vast quantities of text from an archaeological viewpoint.

What is better for waste recycling: a plastic, paper or ceramic cup? A bio-based or fossil-based coating? Waste sorting at the source or at a recycling facility? Ask ten experts and you will get ten different opinions. We can all agree on one thing: doing nothing is not an option. Thus, Leiden University…

Here you'll find selected publications and media attention from our group.

In July 2022, Leiden hosted the ESOF conference.

We depend on nature for so many things: from clean water, wood and food to carbon absorption, water purification and coastal protection, as well as for relaxation, inspiration and identity. Nevertheless, our modern world putting increasing pressure on these ecosystem services. Leiden researchers investigate…

The university is making its campuses future-proof with measures for climate adaptation and biodiversity. You can read in the Sustainability Implementation Agenda 2023–2026 how we harvest rainwater, limit heat stress and make more room for greenery.