Starting on 1 February 2026, Nadia Sonneveld will work one day a week as the faculty's Diversity & Inclusion (D&I) officer. Here, she explains how she came to take on this role and her priorities for the coming months.

Are you a PhD candidate, and is there something you’d prefer to discuss with someone other than your thesis director or supervisor? The confidential counsellor for PhD candidates is here to help. You can speak to him/her in confidence and receive advice. If you experience symptoms of physical or mental…

An international team of astronomers led by Ardjan Sturm of the Observatory has made the first two-dimensional inventory of ice in a planet-forming disk of dust and gas surrounding a young star. The researches, including Melissa McClure, used the James Webb Space Telescope and publish their findings…

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…

Recently, Carlotta Rigotti participated in the ViolenceStop project, a collaboration between Vrije Universiteit Brussel (Belgium) and the Central University “Marta Abreu” of Las Villas (Cuba).

Could water be present in planet-forming disks before the formation of rocky planets? The James Webb Space Telescope may have found evidence for that. Webb has for the first time observed water in the inner disc around young star where at greater distance, giant planets have already formed. The research…

Helma de Jong

The Leiden archaeologist Harold Berghuis was closely involved in archaeological discoveries off the coast of Java. Skull fragments and other fossil remains provide new insights into the world of Homo erectus. The discovery was the subject of numerous news reports.

Dr. Rafal Matuszewski, assistant professor at the ancient history department of the Institute for History, has been awarded an Early Career Partnership by the Royal Netherlands Academy of Arts and Sciences (KNAW).

Jojanneke van der Toorn appears in several media trying to bridge science and society with the aim of contributing to effective and evidence-based diversity policy. Read more in English and Dutch media.

The supermassive black hole at the center of the Circinus galaxy is being fed with gas by two spiral arms. This is what PhD candidate Wout Goesaert discovered. But only a small percentage disappears into the black hole, the rest is ejected.

Waarom is empirisch-juridisch onderzoek van belang voor de rechtspraktijk en het wetenschappelijke onderzoek? Op die vraag kregen masterstudenten van de afstudeerrichtingen civiel recht, ondernemingsrecht en financieel recht antwoord tijdens het congres over empirisch-juridisch onderzoek en het privaatrecht…

A team of international researchers led by Tomas Stolker in the Netherlands has imaged a young gas giant exoplanet near a 12-million-year-old star. The planet is orbiting a star at which planet formation has finished, while the same-aged companion star still has a planet-forming disk. The researchers…

Associate professor Salvador Santino Regilme spoke in various media outlets about the tensions between the United States and Venezuela.

Sufyan Al Karaimeh, a guest researcher at the Faculty of Archaeology, is currently involved in the Aerial Archaeology in Jordan (AAJ) Project. Over the past 25 years, the individuals involved in this project have not only compiled an expansive collection of photographs but have also helped discover…

Revelations about unacceptable behaviour and sexual misconduct in the TV and sporting world have rekindled the public debate about a safe environment. At Leiden University we are coming together to prevent unacceptable behaviour and provide proper care and support for victims. According to President…

Researchers need to work in specialized environments when they work with dangerous bacteria and viruses. These microbes spread easily, so only in labs with a high biosafety levels they can be studied. Unfortunately, to look at the microbes properly, expensive microscopes are needed that are not always…

Astronomers have captured a new deep field of Pandora's Cluster (Abell 2744) with the James Webb Space Telescope. The images show never-before-seen details. The results are described in four scientific papers. Leiden astronomers Marijn Franx and Mariska Kriek collaborated on the study. 'This opens a…

Working in a laboratory is different from working in an office. Some of the rules that apply when working in or around a laboratory are given below.

Jus post bellum, the body of laws and norms governing the transition from armed conflict to peace, has emerged as a crucial issue for international law scholars, governments, and all concerned with building a just and sustainable peace. The Jus Post Bellum Project, funded by the NWO and hosted by the…

Jasper Knoester startte op 1 januari als onze nieuwe decaan. Hoe gaat het met hem, wat doet hij precies en hoe ziet zijn dag eruit? In elke nieuwsbrief geeft Jasper een inkijkje in zijn leven als decaan.

In a recent study, Dr. Moji Aghajani and colleagues show that adolescents with a severe form of Conduct Disorder (CD) -with limited prosocial emotions- require an unusually large amount of brain capacity to read emotional faces. These effects were found in comparison to CD youth without limited prosocial…

In a new article in the journal Scientific Reports, Leiden archaeologist Wei Chu and colleagues report on recent excavations in Western Romania at the site of Româneşti, one of the most important sites in southeastern Europe associated with the earliest Homo sapiens. The site gives an important glimpse…

The Indonesian government has been trying to enforce marriage and divorce laws for some time. These efforts are encountering resistance from both local communities and the Indonesian Supreme Court. PhD candidate Al Farabi investigated where this resistance comes from.

This year’s Education Market will be happening very soon. On 19 June, staff members will be on hand at a variety of stands in the Huizinga Building, ready to inspire you with their experiences. Two of the lecturers describe what they will be doing.

PhD candidate Agnes van Steen researched the history of the Leiden women’s rights movement (1860-1990) and found that the university produced many feminists.

It’s already in the name. Everything you tell a confidential counsellor is confidential. In fact, a confidential counsellor is even liable if they breach their duty of secrecy and confidentiality. Considering all the recent reports in Dutch media of unacceptable behaviour, more attention than ever is…

As technology transforms healthcare and services come under mounting pressure, one question remains the same: Will the advice or treatment offered help patients lead the lives they want to live? In her inaugural lecture, Professor Maxime Kummeling stresses the importance of quality.

Police killed Eric Garner 9 years ago (‘I can’t breathe’) when he resisted a search. Now everyone will consent to stops and searches. Law Professor and author Josephine Ross looks to feminism: what police call consent, feminists would call submission. During the lecture on Wednesday 31 May, Josephine…

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.

What is the impact of religion and its discourse on the lives of queer people in countries where LGBTQIA+ individuals are not accepted? University Lecturer Eduardo Alves Vieira wants to know just that. With an NWO-grant, he will take a closer look at the inclusive religion movement in Brazil.

If you look at the postwar cartoonists of Dutch origin, Bernhard Willem Holtrop is certainly the most interesting, according to Frenk Driessen. He wrote his PhD thesis on Holtrop - who drew for HP/De Tijd and Charlie Hebdo, among others - and then also published it as a book.

Five Leiden research projects in history, law and AI have received SSH Open Competition M 2024 funding from the Dutch Research Council (NWO). The researchers have up to five years to work on a promising idea.

The nominees for the Prof. Dr. J.Th.J. van den Berg-prijs 2022 and the IRO Thesis Prize 2022. Who wrote the best bachelor thesis in Political Science?

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

Protests against textbooks on trans persons in America and against a reading hour by drag queens in Rotterdam: it has been raining protests recently against people with a gender expression that does not match their birth sex. Why does this evoke such resistance? We asked Professor by special appointment…

The Dutch asylum application centre in Ter Apel is overburdened, an issue that is currently a prominent feature in the Dutch media. In podcast De Verbranders, PhD students Neske Baerwaldt and Wiebe Ruijtenberg engage in dialogue, and use different angles to examine themes related to migration, borders…

A widely publicized research article in Nature Metabolism by scientist from the University of Pittsburgh, suggests a high protein diet which is popular among for instance fitness enthusiasts, may be harmful to the cardiovascular system. National media outlets such as NRC Handelsdagblad and NPO 1 Radio…

In de maanden maart, april en mei organiseerde het programma Transparantie in Informatie, van de ministeries van Economische Zaken en Klimaat (EZK) en Landbouw, Natuur en Voedselkwaliteit (LNV), gesprekken over de veranderopgave naar een Open Departement. De sessies hadden als doel om een eerlijk en…

The transcription factor MYC is a master regulator implicated in the majority of human cancers. Despite its central role, MYC has long been considered "undruggable" by small molecules, lacking binding pockets and featuring disordered regions. While larger biomolecules could potentially disrupt MYC function,…

Buried beneath a Suffolk forest, archaeologists have uncovered the earliest known human-made fire. A fire that was sparked 400,000 years ago. This stunning UK discovery may rewrite our evolutionary story, potentially pushing fire-making back by more than 350,000 years.

In this commentary, Sabine Witting, Assistant Professor at eLaw, provides a comprehensive analysis of the Second Optional Protocol to the United Nations Convention on the Rights of the Child on the sale of children, child prostitution and child pornography.

This year's London Hellenic Prize is awarded to Caroline Vout for her excellent study of representations of the human body in sculpture, Exposed: The Greek and Roman Body.

The research project 'when patients don't want to know everything: guide and training for culturally sensitive information in palliative care' investigates how healthcare providers can offer inclusive palliative care.

Carlotta Rigotti, postdoctoral researcher at eLaw – Center for Law and Digital Technologies, has published a new article, Desire in Code: Legal Perspectives on Sex Robots and Consent, in Law, Culture and the Humanities.

Finally we know for sure that there is a black hole at the centre of our own galaxy. Today, astronomers unveiled the first ever photo of Sagittarius A*, a super-massive object at the centre of the Milky Way. This picture could only be taken thanks to the cooperation of telescopes worldwide.

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.

Ward Hoskens started ten years ago as an intern at one of Leiden's most iconic buildings: the Pieterskerk. Now he is doing his PhD on the question of how the function of this 'church that is no longer a church' changed over recent centuries.

A patent for what may be a potent, new antibiotic. And: a clear overview of promising approaches to overcome a crucial resistance tactic employed by bacteria. In the span of one week, two researchers from Leiden are receiving their PhDs, each of them on an important step in the battle against bacteria…