PhD defence

Around 1,300 Leideners found 2,265 species during the Expeditie Stadsnutuur urban biodiversity inventory. ‘It’s been a huge success’, says scientific coordinator Frederic Lens.

Governments are increasingly cracking down on tech companies like X, Telegram and Clearview that flout the law, with a fine, ban or criminal prosecution. In practice, however, this has little effect. A tougher stance is needed, argues Bart Custers, Professor of Law and Data Science at eLaw – Center…

Conference

On Thursday 8 December, the project teams of Leiden University and Heijmans Utiliteit, together with the construction workers of the project, celebrated reaching the highest point of phase 2a of the Gorlaeus Building. An important milestone in the construction and traditionally the moment to put the…

What began as a PhD project has grown into a website with 120,000 unique visitors each year. With the platform OpenML, researcher Jan van Rijn is contributing to open science, aiming to make machine learning more transparent, accessible, and fair.

Workshop

Conference

One of the largest roofs at Leiden University, that of the Snellius building, has recently been equipped with 590 solar panels and 57,000 sedum plants, making it the largest combined roof in the Benelux. The roof was officially opened on Monday 10 October by Annetje Ottow and Martijn Ridderbos, President…

Library, Research

The recent consecration of India’s Ayodhya temple by Prime Minister and Bharatiya Janata Party figurehead Narendra Modi raises important questions. Is secularism giving way to religious rule in the world’s largest democracy? How does this resonate with India’s culturally diverse population? France 24…

Opening van het Quantum Delta NL (QDNL) Talent & Learning Centre (TLC) Leiden-Delft.

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

Network meeting

Seminar

Interactive event

Are you doing research on migration policy in a country that is facing democratic backsliding or breakdown, or that is deepening its already-autocratic character? Are you struggling with how to best do your research so that it is meaningful and scientifically sound yet safe for you and research participants?…

Are all murderers calculating psychopaths with an obscene predilection for bloody chainsaws? Yes, if Hollywood is to be believed, but in the real world they are generally everyday people with problematic backgrounds. Professor of Violence and Interventions Marieke Liem therefore calls for the demythologisation…

You probably already noticed: work on the next phase of the Gorlaeus Building is in full progress. Are you curious to see what it will look like? Then come to the atrium of the Gorlaeus Building. A temporary 'viewing wall' makes it look as if you are looking into the new part of the building.

Of je nu appt, online nieuws leest, of door Instagram scrolt, jouw gedrag wordt gemonitord. Sterker nog: wát jij ziet, wordt door anderen bepaald. Promovendus Aleksandre Zardiashvili onderzocht de impact van online advertenties en de macht van de bedrijven erachter.

‘Een goed gesprek begint met iemand écht zien.’ (A good conversation starts with truly seeing someone). That text is written on a plaque that was screwed onto a IK Z1E J3 (I see you) bench on the Wijnhaven Rooftop Garden on Monday morning. The bench acts as a symbol to create room for discussions about…

White girls receive significantly more positive comments from their teachers in their primary school reports than white boys and children from migrant backgrounds. PhD candidate Antoinette Kroes researched subtle biases in different contexts and saw how harmful these can be.

Interfacultary lunch

Lecture

Bird, butterfly, fish: when you look through a children’s book, you usually don’t think about the fact that humans divided these animals, depicted in bright colours, into categories. Yet, this division has been discussed for centuries. In her PhD dissertation, Didi van Trijp shows how natural scientists…

The tenth International Conference on Rapa Nui (Easter Island) and the Pacific will be a special edition with a focus on reconciliation. The fatal shooting in 1722 will be remembered, when the Dutch shot and killed ten Easter Islanders. The conference will be held in Leiden from 19 to 24 June.

Martina Vijver has been nominated as Teacher of the Year of the Faculty of Science. She gets this nomination for the course Ecotoxicology she taught in 2022. The 52 students who took the course were hugely enthusiastic, as can be read in their positive reviews. What is so great about this course then?…

Conference, 2-day Workshop

On Friday 9 December, Renate van der Zee and professor Marieke Liem held a lecture on 'Visible and invisible violence against women' at the Campus The Hague.

Connecting scientific fields, enhancing research and teaching, and providing innovative solutions to complex social issues: that is the idea behind interdisciplinary research. What did the university achieve in 2024? A small sample.

Research & Politics (RAP) is a peer-reviewed open access journal which focusses on research in political science and related fields through open access publication of the very best cutting-edge research and policy analysis. The journal achieved a high score for the impact factor, which puts it in 49th…

Conference

Inaugural lecture

Festival

Didactics, Working effectively, ICT

Researchers, civil servants and local residents met on 27 September to talk about partnering for sustainability. What were the results? In a green ‘city oasis’ in the centre of The Hague they spoke about the energy transition, bottom-up initiatives and citizen science.

PhD candidate Julia Wąsala searches for greenhouse gas emissions in satellite data. As a computer scientist, she bridges the gap between computer science and space research. ‘We really can't do this research without collaboration.’

Heritage Quest is a large-scale citizen science project in the field of archaeology that allows anyone to contribute to scientific research. It is the first large-scale archaeological citizen science project in The Netherlands and one of the few of its kind in the world. As part of the Cultural Heritage…

The Faculty's Academia in Motion (fAiM) Roadshow has embarked on an inspiring journey across our institutes. The goal? To work together with all the expertise within the faculty towards a cultural transformation focused on Recognition & Rewards and Open Science.

Hwæt! You've heard of the adventures of the mighty Beowulf. You've heard of the brave folk standing beside him, and the awe-inspiring foes standing against him. But where their legend still lives, their tale ended long ago... Let us begin a new saga, let us find new heroes, weave a new story - by the…

De Faculteit Governance and Global Affairs (FGGA) heeft een facultair team opgesteld om invulling te geven aan Academia in Motion (AiM).

The war between Russia and Ukraine, the conflict in Gaza or the global rise of the far-right: topics that stir up emotions but are also regularly discussed in classes at Political Science. Moreover, with a diverse group of students, there is a great diversity of life experiences, backgrounds and opinions.…

Collaborating in drug discovery and health research was the goal of a visit to the Leiden Bio Science Park on 14 May by a Swedish delegation including His Majesty King Carl XVI Gustav of Sweden. The delegation visited Leiden University’s Faculty of Science.

Seminar

Using mathematics to help children with bone cancer. It sounds a little strange, but for statistician Marta Fiocco, it's just her job. She gets a substantial grant from KiKa for it. With that money, she is going to study the effect of chemotherapy adjustments.

More CO2 in the atmosphere is making food crops more calorific, less nutritious and potentially more toxic.

The Royal Holland Society of Sciences and Humanities (KHMW) has appointed four Leiden professors as members. Petra Sijpesteijn, Vanessa Mak, Mariska Kret and Miranda van Eck have recently joined the KHMW.

Leiden University publishes the highest percentage of preprints in the Netherlands. Why is that and why post your article online before it has been peer reviewed? Professor of Quantitative Science Studies and keen preprint poster Ludo Waltman explains.

The annual homicide rate has decreased considerably since the 1990s. In their hunt for an explanation, researchers Pauline Aarten and Marieke Liem made a surprising discovery: if you divide homicides into categories, you find significant differences in the homicide rate. Publication in the European…