Social media gives people a voice but also fuels online hate, especially against marginalised groups. PhD candidate Eva Nave: ‘While end-to-end encryption protects activists, it also enables criminal activity, creating a more accessible version of the Darkweb.’

The Economics Department at Leiden University is pleased to announce a junior workshop focusing on The Economic, Social and Political Effects of Migration, which will be held Friday 19 April 2024, at the Gravensteen in Leiden.

It increasingly seems that Elon Musk has taken it upon himself to decide what can and cannot be said on Twitter. He bought the platform with the message that there would be room to say whatever you desired, but he himself is casting doubts on that principle.

Marieke Liem, professor at ISGA, discusses how the number of drug-related murders has not decreased in the last years

Festival

This September, Adina Akbik received the Political Science Teaching Award at Leiden University. Created by student members of the Bachelor's and Master's Programme Committees (OLC), the award recognises remarkable teaching at the Institute. Akbik was chosen from five finalists after receiving several…

The Hub for Impactful and Engaged Research is a new collaboration that brings together five leading educational institutions in the province of Zuid-Holland: Leiden University, the LUMC, Delft University of Technology, Erasmus Medical Center and Erasmus University Rotterdam.

On Tuesday, November 18, 2025, Ambassador Bert Theuerman (Austrian Ambassador to The Netherlands) hosted a Coffeehouse Discussion exploring the position and impact of women in science and arts at his residence in The Hague.

The steady decline in lethal gun violence in the EU came to halt in 2012 and some countries, such as Sweden, have even noticed an increase since then. An arms race among drug criminals and an increase in the availability of illegal firearms could lead to more criminal and gun violence. This is one of…

Many children experience trauma and if they are unable to deal with it properly, it can have a huge personal and societal effect. Building resilience in vulnerable children and young people should therefore have the highest priority. This is the message of Anne-Laura van Harmelen, Professor of Brain,…

Carlotta Rigotti and Eduard Fosch-Villaronga have published a new article that offers an insightful and critical literature review on fairness and AI in the labour market as part of the BIAS project.

Course

People in the Early Bonze Age used bronze artefacts as a means of payment. This is the conclusion reached by archaeologists Maikel Kuijpers and Catalin Popa in a PLOS ONE article published on 20 January. The discovery led to a surge of media reports.

Ever since the first edition of the Science Run, the Leiden Student Running Association Currimus has delivered the winning team or the fastest runner. Now the event is back, the new batch of students must uphold the honour. The board is also forming a team: ‘During the upcoming training session, we…

Mensen werken niet alleen liever samen met leden van hun eigen ingroup, ze concurreren er ook liever mee, lieten Leidse onderzoekers in een sociaalpsychologische studie in 51 landen zien. Dit ‘nasty neighbor’- effect was een grote verrassing voor de onderzoekers, totdat ze in studies over dieren doken.…

South Korean smash hit Squid Game is on track to becoming the most successful Netflix production ever. The series is number one in over 90 countries. Professor and Korea expert Remco Breuker can see why South Korean pop culture is becoming so popular, also outside Asia.

The interdisciplinary, English-taught minor ‘Violence Studies’ looks at violence from very diverse scientific perspectives. What are the benefits from this approach? Students and lecturers evaluate: ‘This minor’s a goldmine’.

What motivates citizens to participate in a citizen science project on plastic pollution? And does that motivation change over time? Liselotte Rambonnet tried to answer these and other questions with her research on the Clean Rivers (‘Schone Rivieren’) project. Rambonnet is a PhD student at the Institute…

PhD defence

Festival

113 Suicide Prevention gave a guest lecture about suicide prevention at the Spanish Steps in Wijnhaven

The Leiden Bio Science Park (LBSP) is eager for new talent. Therefore, as a member of the core group, Miranda van Eck is committed to improving cooperation between the faculty and the business community. How do we make sure we know how to find each other better? And how do we show our students what…

More papers, more grants, more students: constant growth is still the gold standard at universities. Neuroscientists Anne Urai and Claire Kelly argue that this mentality obstructs us in resolving such complex societal problems as the climate crisis. Their alternative? The university as a doughnut.

From researching plastic pollution to caring for injured wildlife, volunteers play a crucial role in conservation. But much of the valuable knowledge they gather remains unused.

Lecture, Sociolinguistics & Discourse Studies Series

Extremist users of Telegram are moving en masse to other chat apps, such as the anonymous SimpleX. In this way, they hope to avoid detection, now that Telegram founder Pavel Durov is going to share personal data of criminal users with authorities.

Festival

Festival

Ionica Smeets is planning to give the prize money that she won with the Iris Medal, a prize for excellent science communication, to student projects.

Science day

Four researchers from Leiden University have been awarded prestigious Vici grants the Dutch Research Council (NWO) has announced. The honoured applications are from researchers at the Faculty of Social and Behavioural Sciences, Leiden Observatory, the LUMC and the Faculty of Archaeology.

Didactics, Working effectively, ICT

Een internationaal consortium onder leiding van Olaf van Vliet heeft een Horizon Europe subsidie van 3,4 miljoen euro gewonnen. In het onderzoek staat centraal hoe wereldwijde sociale veranderingen zoals migratie, digitalisering en de klimaattransitie de arbeidsmarkt beïnvloeden en wat daar de gevolgen…

Webinar with Q&A