Under what circumstances do paramilitary groups limit their use of political violence? This article examines the use of political violence by the PIRA.

Our mission: a positive impact. Our vision: community. By involving the world around us in our education and research we make a positive impact. We do this by applying Open Science.

Leiden University College The Hague (LUC) offers a 3-year Bachelor's programme with a focus on Global Challenges: Peace & Justice, Sustainability, Diversity and Prosperity. The programme offers room for flexibility; you get to specialize in a major of your choice and combine this with a minor or electives.…

What happens to electrical waves that have to cross gaps in insulation material around nerves in the human body

Social Information Processing in Children with and without Hearing Loss

igraph development focused on improving the most-used interfaces, which are Python, R, and Mathematica. Additionally, the developers aim to make the library and the interfaces easier to maintain, focusing on long-term sustainability. This ensures that igraph continues to be a useful tool for network…

Open Educational Resources (OER) have the potential to change teaching in Higher Education, but adoption is low despite the growing amount of resources available. The current project aims to investigate if and how teacher communities can foster adoption of OER in curricula.

This research revolves around the philosophical and linguistic elements that naturally belong to the process of learning music scores, including complex contemporary repertoire distinguished by physically decoupled notations or physical polyphonic notations.

The digitisation of society is a worldwide challenge. Not only are robots increasingly taking over human tasks, they are even beating the world champion at solving the most difficult brainteasers.

Opportunities, challenges, and future perspectives of people-centered approaches in dynamic historic urban landscapes

To investigate the effectiveness of an online self-help programme for people with HIV and depressive symptoms.

Within the Centre we cover several research themes.

PathOS aims to contribute to a better understanding and measurement of Open Science impacts and their causal mechanisms. This is pivotal in order to develop effective OS policy in the EU (European Union). It will do so by collecting concrete evidence of OS effects, by studying the pathways of OS practices,…

Leiden University College The Hague (LUC) offers a 3-year Bachelor's programme with a focus on Global Challenges: Peace & Justice, Sustainability, Diversity and Prosperity. The programme offers room for flexibility; you get to specialize in a major of your choice and combine this with a minor or electives.…

Leiden academics research the world around us and pass on their knowledge to future generations. Each with his or her individual expertise and personal fascination for a particular discipline, they are the public face of the University.

The Leiden Academic Centre for Drug Research (LACDR) is a centre of excellence for multidisciplinary research on drug discovery and development.

The Leiden University Medical Center (LUMC) is committed to improving healthcare and the health of individuals. The LUMC staff put this mission into practice on a daily basis with their leading research, cutting-edge teaching and optimal, innovative healthcare.

We know this, but we don’t act on it: eat healthily, move more, address our stress levels and sleep well. Internist and Professor of Diabetology Hanno Pijl is fascinated by the effect that a healthy lifestyle can have on health. He researches how this lifestyle is achievable and satisfying, for patients…

What is the Electronics Department?

How to access the end-of-supply risk of spare pares using big data analytics

Martijn Bezemer has been appointed as professor in “Ecology of plant-microbe-insect interactions” within the Faculty of Science at the Institute of Biology from the 1st of September 2016. His main research focus is on aboveground-belowground interactions.

What role do the soil and soil organisms play in the restoration of nature quality? This is what researchers at Leiden University are going to find out, together with water company and nature manager Dunea. They will do this by inoculating soil, whether or not sterilized, with soil and seeds. On Friday…

From learning modules for primary schools to a ‘Fixer-Upper Day’ and from a platform for returning broken electronic devices to a call to government: the National Think Tank has presented ten solutions that should help create a circular economy. We spoke to three Leiden members of the Think Tank about…

Farmers do not love them all. Microbes can cause tragic consequences for crops. Even the presence of just one pathogenic fungus or bacterium can drastically reduce yields. Still, there are exceptions. In that case, a pathogenic microbe is present in the soil, but does not cause any harm. Adam Ossowicki…

With the sowing of the last experimental plot, new research platform TERRA-Dunes was officially opened on 29 June 2018. The experiment has a fundamental scientific character, but has important practical applications in nature restoration.

An overview of research projects at the Predictive Pharmacology group.

In the period 1977–2020, the purchasing power of the Dutch population increased by 58 percent. The sharpest rise occurred from 1999–2009 (22 percent). This is the outcome of research conducted by Leiden University and Statistics Netherlands (CBS).

In September 2023, we started transforming a under-utilised outdoor space into a greener and more biodiverse garden in which all students and staff of the Schouwburgstraat can relax and enjoy.

Its idyllic setting and white sandy beaches have made the Maldives a hotspot for tourists. This provides an income but is a problem for the fragile natural environment. Students from various universities worked with the local people to make the soil more fertile. How did they go about it?

Last week Esther Kentin participated in the Second Meeting of the Ad Hoc Open-Ended Expert Group on Marine Litter and Microplastics organized by UN Environment in Geneva.

Recent publications

The ARTIVES project studies imaginaries of diversity portrayed by artists in Lisbon and Rotterdam in their films, performances and (oral) literature with the aim to explore their transgressive potential of opening up possibilities of thinking differently about migration-related diversity. Their stories…

What are the typical characteristics of teaching at research universities, and how is excellence defined and promoted? These are the key questions in the latest position paper published by LERU, the partnership of European research universities, including Leiden.

Relatively simple adjustments can reduce nitrogen losses on dairy farms in peatland areas. That’s the conclusion of the PhD research by by Leiden environmental scientist Jeroen Pijlman at the Louis Bolk Institute. Protein-poor grass species and narrow-leaved plantain in the grassland can limit nitrogen…

Aim: To develop and enable application of a practical, flexible, user-friendly platform to provide the scientific community with a tool to generate land surface products and its associated uncertainties and exploit these for data-intensive science.

What workflow of non-destructive techniques provides accurate, valuable data to improve our understanding of Caribbean archaeological landscapes? How were Amerindian settlements configured?

Scientists of Leiden University and Technical University Delft are going to predict how and where defects in sewer systems arise. They are working with light sensitive camera’s, based on new automated multi-sensor inspection with stereo vision and laser range scanning. Their models are going to process…

What are the behaviours of plant traits throughout various points in the growing season in a radiative transfer model framework and how well can this knowledge be integrated through data assimilation to provide priors for robust local and global vegetation products and analysis?

The Netherlands is not particularly rich in ‘wild nature’. Comparatively, what we have is a lot of intensively used agricultural land. This means that from nature’s perspective there much to be gained by combining the ‘nature’ and ‘agriculture’ functions. Not an easy task in such a densely populated…

This dissertation together with the artworks documented in it is the result of an investigation across multiple media over a seven-year period of the cultural, artistic and spiritual legacy of the late nineteenth- and early twentieth-century Lebensreform (Life Reform) movement.

Leiden University and the Municipality of Leiden worked together on the development of the Schilperoort Park. This new public space is situated in the north-eastern part of the Leiden Bio Science Park. The park ambience is extended into the adjacent residential area, where former medical laboratories…

A critical look at the impact assessment modelling of metals in Life Cycle Impact Assessment and improvement options.

How can ecosystem services within river catchments be quantified in spatial and temporal explicit way?

In the master’s programme in Archaeology, you can follow courses on the archaeology of the Near East, deepening your understanding of this region’s fascinating past.

This minor critically examines the complexities of food sustainability through ecological, socio-economic, political, and cultural systems.

Plants love favourable microbes such as bacteria and fungi: they grow better and become healthier. Jos Raaijmakers, Professor of Microbial Ecology, is in search of the right microbes to be used in agriculture. Inaugural lecture 13 November.

Offshore wind farms host more soil animals per square meter than the North Sea floor, discovered Leiden researchers. After 25 years, hundred times more animals and a doubling of the number of different species could live on the foundations of wind turbines. The researchers published their findings in…

‘Make more room for nature on farmland and you'll be surprised at the result.' This was the advice from Geert de Snoo in his Dies lecture.