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.

Aukje Beers combined theory and practice, as well as chemistry, biology, and computer models. In this way, she discovered two protein inhibitors during her master’s project that could contribute to the development of a new cancer drug. For her research, Beers received the Unilever Research Prize on…

The starting point of human-induced landscape changes has been under permanent debate. It is widely accepted that the emergence of agriculture strongly increased human impact on their environments. However, foragers can and do actively transform land cover and ecosystems. Ethnographic observations,…

Since its discovery thirty years ago, it remained a mystery: how does the body’s own marijuana move between nerve cells in the brain? Mario van der Stelt and his research group have now uncovered the answer. This insight could aid the development of new treatments for pain and neurological disorders…

For the first time, astronomers have observed in three dimensions that gas from spiral galaxies is blown upwards and downwards at high speed, far out of the galaxy. They thereby confirm the theory of galaxy evolution: that star-forming galaxies create intergalactic gas flows by discharging gas along…

Dr Alex Geurds was elected as a Fellow for the Society of Antiquaries, a prestigious and old educational charity based in London. Established in 1707, the society aims at the encouragement and advancement of the study and knowledge of the antiquities.

Your student days are the best time of your life, full of parties and friendships for life. Right? Well, not always. Especially at the beginning of your studies, chances are you will feel alone from time to time, but even after that, it is normal to have to get used to this big change and feel lonely…

Het strategisch plan van de faculteit wiskunde en natuurwetenschappen (FWN) werd gepresenteerd tijdens de opening van het academisch jaar 2023-2024.

From lectures by Robbert Dijkgraaf to a telescope on the ocean floor: during his double bachelor’s in Physics and Astronomy, Jelle Oonk discovered that the path to big cosmic answers sometimes runs through the smallest, hardest-to-catch particles—neutrinos.

Lecture, Astronomy on Tap

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Lecture and excursion

During the second Arthur Docters van Leeuwen Lecture on 2 December, AIVD Director Erik Akerboom underlined how the changing threat landscape demands reflective leadership, transparency where possible and close cooperation to protect the democratic legal order.

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.

Can humans perceive single photons? What is our place in the universe? How can we make quantum computers more stable? Five researchers from the Faculty of Science have received funding for their research projects within the Dutch Research Agenda (NWA).

The nominees for the IRO Thesis Prize 2025 and the Prof. Dr. J.Th.J. van den Berg-prijs 2025. Who authored the best thesis in Leiden University’s bachelor’s programme in Political Science?

Leiden researchers have developed a groundbreaking model to advance cancer immunotherapy. Using a 3D printer, they create mini-tumors within an environment that closely mimics human tissue. They have also developed a method to monitor real-time interactions of these mini-tumours with immune cells during…

A group of astronomers led by Leiden PhD student Sebastian Zieba has discovered using the James Webb Space Telescope (JWST) that the rocky exoplanet TRAPPIST-1 c has a thin atmosphere. Although the planet is nearly identical to Venus in size and temperature, and was expected to have a thick atmosphere,…

How can you persuade researchers who are used to conducting research within clearly defined disciplines to adopt an interdisciplinary approach? Newly appointed distinguished professor Arnold Tukker explained.

The liquidator is, according to the law, the initial designated person to signal and address irregularities in insolvencies. But when tackling fraud costs more than it generates, what does that mean for the liquidator’s course of action? And which factors obstruct liquidators in addressing these irregularities?…

Eight scientists from Leiden University have been awarded a grant by the Dutch Research Council (NWO). With this Vidi funding, the researchers can set up an innovative line of research and further expand their own research group over the next five years.

The euro crisis of 2010 has shown that the Eurozone lacks economic cohesion and that EU fiscal integration is needed for a stable euro. But can this integration exist without clashing with the national constitutional interests of the Member States? Frederik Behre looked into this matter in his PhD-thesis…

Henk Hoekstra and Alessandra Silvestri work on the astronomy and theoretical physics in the Euclid mission. These Dutch researchers are part of the mission.

Cancer research generates massive amounts of data, but traditional tools often fail to fully harness their potential. How can we unlock this data to provide better treatments for cancer patients? PhD candidate Marina Gorostiola González explored this by using advanced data analysis techniques to guide…

Bacteria carry countless hidden treasures in their DNA: fragments that could hold the key to new medicines. But how do you pick out the most promising ones from millions of options? ‘Look at the switches that turn genes on and off,’ says molecular biologist Gilles van Wezel.

Markus Altena Davidsen was 'extremely happy' when he heard that he and his colleagues had been awarded a grant from the KNAW pilot fund for science communication. Together with partners from all over the country, they are working on a book that should inspire secondary schools to renew their education…

Astronomers led by Leiden PhD candidate Richelle van Capelleveen have, for the first time, discovered an exoplanet that has carved a bright gap in the protoplanetary disc around its star. This rare observation provides new insights into how young planets shape their surroundings.

Not only dark matter, but also ordinary matter and dark energy are tracked in the largest ever cosmological computer simulation ever. In the FLAMINGO simulations, you can see virtual galaxies and clusters of galaxies emerging over the course of billions of years. This is no easy task: with more than…

Towards the end of the academic year, many students struggle with study stress. Does the pressure sometimes get too much for you, too? Student psychologist Martine Efting Dijkstra has some tips.

Three quantum-safe cryptography methods have been standardised for worldwide use since this week. Léo Ducas co-designed the two primary PQC methods selected for this standardisation. Ducas is part of the Cryptology group at Centrum Wiskunde & Informatica (CWI) and is also professor of Mathematical cryptology…

Not experiments and lab coats, but computers and artificial intelligence: this year's Nobel Prize in Chemistry went to the inventors of the groundbreaking AI model, AlphaFold. This programme accurately predicts protein structures based on their genetic code—a crucial step in understanding biological…

Due to technological and societal developments, we are being flooded with more information than our brains can process. How does this affect our decision-making, both as individuals and as a society? And can we learn to make better choices? This is what Lotte van Dillen will explore with her profess…

In a paper, researchers suggest how the next European Commission can develop an alternative policy model that centres people’s well-being.

On 10 December, the Intelligence and Security Research Group of ISGA had the honour of hosting Vice Admiral Peter Reesink for the inaugural Arthur Docters van Leeuwen Lecture.

How do fats and enzymes in the brain contribute to multiple sclerosis? In his PhD research, Daan van der Vliet combined chemistry and neuroscience to gain new insights into how brain disorders develop.

‘Take science communication more seriously.’ This is the message that Ivo van Vulpen, professor by special appointment in Science Communication in Physics, wants to convey during his inaugural lecture. At the moment, a lot of researchers look down their noses at this while it is extremely important…

The first block is almost over and that means you will soon be able to evaluate the courses you attended.

Suddenly getting lost, failing to recognise family members, or forgetting words and names are well-known symptoms of Alzheimer's disease. Psychologists have now discovered that the disease also manifests in more subtle ways: through the rhythm of finger tapping.

In the ‘Educatips’ column, psychology lecturers share their valuable insights about lecturing. This month: Franz Wurm is developing entrepreneurship workshops together with PLNT for master’s students of Clinical Psychology. ‘We want to teach students to develop from passive consumers to become active…

The European Space Agency (ESA) has published an interim data release from Gaia, the space telescope mapping out the Milky Way in 3D. The first scientific papers published today reveal half a million stars in the Omega Centauri globular cluster, nearly 400 candidate gravitational lensers and the positions…

An all-optical transistor, a molecule-sized sensor and a new kind of single-photon source for quantum communication. All dreamed applications of fundamental physics that are one step closer thanks to Robert Smit. On 12 June, he defended his PhD thesis with distinction.

Many people are wondering whether to vote strategically or not in the parliamentary elections on Wednesday. This raises at least three important questions: what is strategic voting, how do you know if you are a strategic voter yourself, and what do you need to do to use your strategic vote well?

'Academics who share their knowledge with the outside world on social media are often insulted or even threatened. Especially female academics and academics of colour seem to regularly be the victim of sexist and racist comments.' This is what Ineke Sluiter, Professor of Greek Language and Literature…

For many people, five o’clock signals the end of their working day. But not for the motivated students of the Honours College Law. With some drinks and snacks, they keep going well into the evening. This time, they met for the festive conclusion of a course which brought the history of Dutch crime to…

‘Space Antenna LISA will open an unprecedented window on the Universe,’ says astronomer Elena Maria Rossi. The mission will be the first one to detect Gravitational Waves from space. These can tell us more about the beginning of our Universe and the formation of black holes. With an NWO grant of twelve…

Seven Leiden professors have been elected as members of the Royal Netherlands Academy of Arts and Sciences (KNAW). In total 23 new members will be inaugurated on Monday 13 September.

A team of three students affiliated with Leiden University is shedding new light on the lives, diets, health, and mobility of individuals buried at the historic church site in Koudekerke, Zeeland. The project, a collaboration with the Walcherse Archeologische Dienst and funded by the Municipality of…

We need to dispel the arrogant and misguided idea that modern humans are superior to earlier human species. It is thanks in part to all our predecessors such as Neanderthals that we are who we are today. This is what Marie Soressi, Professor of Hominin Diversity Archaeology, will argue in her inaugural…