Designing innovative algorithms, thinking outside the box, and brainstorming over coffee with his colleagues — this is what physicist Stefano Polla enjoys most. His success shines through in his nomination for the C.J. Kok Jury Award 2024 for PhD thesis of the Year.

With a call for dialogue and collaboration, vice dean Bart de Smit kicked off the new academic year for the Faculty of Science on Tuesday 3 September. Theoretical physicist Carlo Beenakker outlined the possibilities of quantum as a disruptive technology.

Two PhD defences on 9 June by behavioural biologist Errol Neo and underwater acousticianan Özkan Sertlek relate to measuring noise in the North Sea and the harm this noise can do to aquatic animals and their surroundings. Little is known about how harmful human noise can be to aquatic animals.

In May 2022 Lennart Kruijer succesfully defended his PhD, which he wrote as a member of the VICI Project ‘Innovating Objects’, led by prof. Miguel John Versluys. So succesfully, in fact, that he was awarded the Cum Laude honors. Just a short time later he was awarded a grant and a fellowship to further…

In love, we like to use great words. We promise to love each other ‘forever’ and praise the beloved as nothing less than ‘the one’ . Meanwhile, we know very well that we don’t live eternally and that we may find our ‘true love’ one day on the opposite side of the divorce table. So why do we continue…

Leiden has the most highly regarded China Studies programme in Europe. But how did this knowledge find its way specifically to Leiden? For his PhD research Koos Kuiper delved into the unique history of the start of this unique programme.

These days we do not just have wars and civil wars – more of a global civil war, says Bashir Azizi, who received a PhD in April 2020 for his thesis on global citizenship. The second edition of his thesis was recently published.

He was a popular face in the Leiden student world and even developed his own merchandise, but all good things come to an end. After seven years, community support officer Dennis Perdok (49) is leaving this role. Last week he bid farewell to the police and to his job in Leiden’s city centre.

That was the question physics and mathematics bachelor’s student Daan de Bos set out to explore during his thesis research. Applying machine learning theories to materials presented several challenges, but his efforts led to a working theory that can now be tested on real materials in laboratories.

In high school, Tim van Erven read about an artificially intelligent algorithm that could solve mazes. From that moment on, he was sold: ‘There’s something magical about algorithms. With a list of fixed rules you can make them learn the most diverse things.’ This year, he won a Vidi grant, which he…

Victor Gijsbers, university lecturer in Philosophy, has been chosen as a fellow of the Leiden University Teachers' Academy. Over the next five years and with €25,000 to spend, he will be looking for a new interpretation of the Philosophy of Science for Humanities course. ‘Treating a tough and abstract…

Another successful edition (the fourth!) of the Leiden Alumni in Brussels event took place on 23 February. With a fully booked registration list, it already promised to be a great success in advance. The event took place at the Baker McKenzie location right in the centre of Brussels. As the area was…

Cramming from a book, making notes or learning summaries. In the past these were about the only ways to memorise your course material. But that has long since changed. Multimedia is the code word. But is it effective?

Astronomers from Leiden Observatory have developed a new method to find distant quasars and better distinguish them from other objects that look like them, using machine learning techniques. The research result has been accepted for publication in the journal Astronomy & Astrophysics. It is the last…

In the discs of dust and gasses around young stars, mysterious structures occur. Together with professor Ewine van Dishoeck, PhD student Paolo Cazzoletti investigate how we can explain these forms, such as rings, spirals and holes. On 12 December, he will defend his thesis.

Leiden patriot Pieter Vreede fought for greater popular influence. Historian Dirk Alkemade reveals how this pioneer used radical means to shape Dutch democracy.

On June 14th, Jeroen Duindam, Professor of History at the Faculty of Humanities, was awarded an exceptionally high distinction for his achievements in the field of Austrian history.

How do children learn to see the world through someone else’s perspective? Max van Duijn, assistant professor at the Leiden Institute of Advanced Computer Science (LIACS), receives 24,167 euros from the Elise Mathilde Foundation and the Leiden University Fund (LUF). With this grant he will set up a…

Ben Wielstra strives to unravel the evolution of balanced lethal systems. On 1 February he started his own lab at the Institute of Biology Leiden. Wielstra is one of five researchers at Leiden University who has been awarded an ERC Starting Grant in 2018 by the European Research Council. ERC Starting…

Who determines what is wrong with children and how they develop? Educator and sociologist Annemieke van Drenth wrote a book about this that will be released on 10 June. In it, she uses the history of the school for ‘idiotic children’ in The Hague to investigate how special children were identified in…

Religious studies specialist and historian Tom-Eric Krijger talks about the new pope. Will he be a mediator or someone who dares to take a stand?

What do you do when you get the chance to meet Nobel Prize winners in your field? You say ‘yes’, of course! Two young chemists from Leiden had the opportunity to attend the Nobel Laureate Meeting in Lindau, Germany. They share what the experience was like.

The Leiden Institute of Chemistry (LIC) is to be joined by a further two talented young chemists. Bela Bode and Michele Pavanello have each won a Marie Curie subsidy. Bode will be studying electron transport in photosynthesis and Pavanello will be using computer models to study charge transport in large…

The annual commemoration of the nation’s war dead on Dam Square and at Waalsdorpervlakte, the Dutch apologies for historical slavery and the Cleveringa Lecture itself: our relationship with history is often ritualistic, Cleveringa Professor Frank van Vree will say in his inaugural lecture on 27 Nove…

You might take photos and selfies with your phone's camera, or scan a QR code. But there is much more you can do with it. Astronomer Olivier Burggraaff developed a phone attachment that allows you to take measurements of surface water with your smartphone. He will receive his PhD on 13 December.

You win the Leiden Teaching Prize and suddenly all eyes are on you. Three past recipients reflect on how this student-awarded prize has changed how they work and improved their teaching – and how they chose to spend the money.

How much energy and greenhouse gas emissions can Dutch homes save? Xining Yang uses Leiden as an example and shows with his research how enormous the impact can be. At least, if we work harder on becoming more sustainable. Based on the models he developed, Yang will receive his doctorate on 28 June.

How do you recount historic events if you are not allowed to talk about them? For his dissertation, Taufiq Hanafi tried to find out how a period of mass murder – despite heavy censorship – found a place in Indonesian literature. PhD defence 31 March.

Not many scientists can claim to have received funding from NWO to blow bubbles and play with sand, but Martin van Hecke definitely can. Van Hecke, Professor of the Organisation of Disordered Matter, delivered his inaugural lecture on Friday 4 September, under the enigmatic title of: ‘Bellen, bollen,…

PhD student Raymond van Bommel decided to pore upon one of the most complicated mathematical problems of our time; the solution of it is worth 1 million dollars! Van Bommel did not get that far yet. However, he wrote his own computer program to make new calculations. ‘It could just be that someone else…

Featuring the world’s first neural synthesizer, artist Guy Ben-Ary and his collaborators will perform at the TodaysArt Festival in The Hague on 21 September. For this performance, he collaborated with the lab of Erik Danen to transform neural stem cells into neural networks on a chip.

The fight against insurgents, guerrillas and resistance movements is an ‘incredibly unpopular’ topic with experts and military personnel, says Professor by Special Appointment of Military History Thijs Brocades Zaalberg in his inaugural lecture. He warns that ignoring these forms of irregular warfare…

The left is gaining more and more ground on the political map of Latin America, with the elections in Colombia as the most recent example. But what’s behind this pull to the left? Professor of Modern Latin American History Patricio Silva talks about the current political situation in the region.

Since January 2026, Alex Geurds has been the new Dean of the Faculty of Archaeology. His start was calmer than many expected, but behind that calm lies a period of exploration, listening, and strategic forward thinking.

Violence such as assault or head-butting causes pain, shock and distress. It is often seen as savage or senseless. But for those who commit it, violence has meaning, argues violence researcher Don Weenink in his inaugural lecture.

Connecting as the magic word. Seeking new collaborations, presenting ourselves to the outside world with an open attitude and showing what we do. During the opening of the academic year on Tuesday afternoon, Dean Jasper Knoester emphasised that change and connection are necessary for the university…

What makes peace missions succeed or fail? Which new technologies will determine the outcome of wars? In recent decades, insufficient use has been made of knowledge of modern warfare, when this is crucial to European security. This is what Frans Osinga, Professor by Special Appointment of War Studies,…

Music, being together and the impact of science were at the heart of the festive opening of the academic year and the start of the faculty’s 200-year anniversary. The faculty was 200 years old on 2 August 2015. The anniversary was celebrated in style, attended by 500 members of staff and students.

Our student Ivo Verheijen won an award with his excellent report on his internship studying mammoths in Northern Siberia. This Thursday he will give a lecture on this topic at the Cleveringa-meeting in Paris!

IT lawyer Eduard Fosch Villaronga wants to promote diversity and inclusiveness in AI research. And that's really important, because he has observed how artificial intelligence - from Twitter to walking robots - is prejudice in terms of race, gender and sexual orientation.

Arie-Willem de Leeuw, Postdoc at LIACS, analysed the running data of the Boston Marathon. In Mare he explains how to optimise your long distance runs.

Graphic Novels and Comics have developed from pulp status to an entirely self-contained medium. This form of storytelling is not limited to stories of superheroes but has been used, molded and reshaped to display historical events, classic stories and autobiographical memoirs. But where should you begin…

Dutch and international students brandishing bows and arrows fire at each other on the fields of the University Sports Centre on 11 May. This is the aim – not the shooting each other, but the act of getting together.

Piercing through the skull with an ice pick, administering electric shocks without an anaesthetic, or applying leeches to the uterus: these may seem like medieval methods of torture, but they are in fact therapies used in medicine. Willem van der Does writes about all of them in his new book. ‘Physicians…

From academic freedom to security and medical breakthroughs: during Leiden University’s 451st Dies Natalis, the speakers reflected on the role of universities in a world of social and geopolitical tensions.

A new year that will bring all sorts of developments in the world of research. What are the new year’s resolutions in social sciences research at our faculty? What unites us, and what exciting developments do we anticipate?

Peter Slort is the highly driven portfolio holder for Diversity with the Dutch National Police. Since November 2016 he has been spreading the importance of diversity throughout the police organisation.

Electrons in graphene behave like light particles; they have no mass and can penetrate everything: very useful if you dream about nano-electronics. But you do have to channel them. Carlo Beenakker will be researching how. He has been awarded an ERC Advanced Grant of 1.5 million euro to carry out this…

At the invitation of the Centre for Early Christianity and Its Reception (CECIR), Peter Liebregts, Full Professor of Modern Literatures in English (LUCAS), visited the University of Kent in Canterbury from March 17 to 20, to give a lecture and a masterclass.

Within a single generation, the digital world has changed completely: from a technical niche for ‘nerds’ to a reality that affects everyone. Cyberattacks, data breaches and system failures can disrupt essential social processes. How can we ensure that our society remains digitally resilient?