The Sanquin blood bank gathers data on every donation. Around 720,000 donations are made every year. ‘That generates a mountain of highly valuable data,’ says Leiden PhD candidate Marieke Vinkenoog.

Political scientist Matthew Longo (Leiden University) takes a detailed look at the evolution of border security in the United States after 9/11. Far from the walls and fences that dominate the news, he reveals borders to be thick, multi-faceted and binational institutions that have evolved greatly in…

October and November not only bring a number of proud Political Science graduates, it is also the season to determine who wrote the best bachelor’s thesis. For 2021-2022, fifteen theses were nominated. During the various graduation ceremonies the two final winners were announced: Essi Maria Teresia…

As of 1 August, Anika Bexkens has been appointed Professor of Evidence-Based Clinical Practice for Child and Adolescent Mental Health. Her research focuses on the optimal application of scientific knowledge in practice. ‘Scientists and practitioners often speak past each other.’

This dissertation is a study of the view of the Neoplatonist Proclus (Athens, 411-485) on to what extent and how the changing and unreliable world of sense perception can itself be an object of scientific knowledge.

This dissertation explores Aristotle’s use of teleology as a principle of explanation, especially as it is used in the natural treatises.

Promotor: H.V.J. Linnartz

This article explores how the meaning of the rule of law has evolved over the past century in UK and US parliamentary speeches, focusing on procedural (thin) and substantive (thick) conceptualisations.

A collaboration between the IBL and LUMC has resulted in the discovery that the polymerase theta enzyme is essential for the integration of Agrobacterium T-DNA into the genome of plants. The finding means a break-through for the development of more efficient systems for targeted genome modification…

Vicencio Oostra, who defended his PhD-thesis at the IBL successfully in June 2013, published new insights into the hormonal regulation of butterfly responses to fluctuating environments.

Hortus prefect Paul Keßler was a part of the delegation of Leiden researchers that traveled to Indonesia on a knowledge mission. In two weeks, he visited seven different universities and institutes and of course he also went to see three botanical gardens.

Global affairs, governance, security, sustainability, public administration, and urban development are topics broadly covered in FGGA's research activities. Regularly, FGGA researchers contribute to The Conversation, an independent platform for academic insights and analysis on current affairs. This…

A more powerful and prosperous China is exerting unprecedented influence on global affairs and the Chinese government is openly pursuing a proactive diplomacy. Reflecting the importance of these developments, The Hague Journal of Diplomacy is now calling for paper proposals for a special issue.

Assessing Learning in Higher Education addresses what is probably the most time-consuming part of the work of staff in higher education, and something to the complexity of which many of the recent developments in higher education have added. Getting assessment ‘right’– that is, designing and implementing…

The national dietary guidelines in Australia, Brazil, Ireland, Japan, Portugal, and Slovenia benefit nutrition, environment and animal welfare, Leiden environmental scientists write in the journal One Earth. However, the national guidelines of other countries face trade-offs, negatively impacting at…

It took a while, but the new cabinet has now finally been appointed. Four members of Schoof I studied in Leiden. Who are they?

Paul Behrens (Leiden University) and Matthew Hayek (New York University) have responded to an FAO report on livestock pathways which misrepresented the potential for dietary change to reduce emissions from the food system. The authors have sent a letter to the FAO calling for an urgent retraction on…

To discuss this question, chairmen, members, and secretaries of the Research Integrity Committees (Commissies Wetenschappelijke Integriteit, CWI) of almost all Dutch universities gathered at the Leiden Observatory on 21 April. Also present were members of the committees from Leuven, Brussels, Ghent,…

Leiden’s Rapenburg canal was transformed into a magical open-air stage for the jubilee edition of the Leiden Canal Concert, as hundreds gathered to celebrate 450 years of Leiden University. The concert featured an orchestra made up of students and staff performing alongside local artists.

On Friday afternoon 15 November 2024, the Leiden University Sustainability, Business and Human Rights Network and Discussion Group (LUSBHR) organised the Corporate Responsibility Conference: Topical issues on fundamental rights and sustainability. The afternoon was spent considering corporate social…

A wide range of metals need to be mined for solar panels, wind turbines and batteries. But the overall mining activity is set to decrease as clean energy replaces fossil fuels such as oil, coal and gas.

Sarah de Rijcke (CWTS) receives a ZonMw Fostering Responsible Research Practices grant for the project 'Optimizing the responsible researcher: towards fair and constructive academic advancement'.

How do archaeologists test ideas about the evolution of the modern brain? Veni-researcher Geeske Langejans and then Master student Paul Kozowyk (Leiden University) prepared different Prehistoric glue recipes and tested these for strength in modern test machines at the Delft University of Technology.

Leiden University is awarding an honorary doctorate to virologist Marc van Ranst. Van Ranst has been one of the main advisers of the Belgian government during the Covid pandemic. German Arabist Beatrice Gründler will also receive an honorary doctorate for her work in the field of Oriental Manuscript…

Three researchers of Humanities have been awarded with a VIDI research grant. With a VIDI they can spend five years researching the topic they submitte. The grant amounts to a maxium of eight hundred thousand euros.

It has been just over a decade since the first students graduated with Leiden University’s unique Liberal Arts and Sciences Bachelor degree. We caught up with one of those pioneering graduates.

Students searched for MSc Internships under the following topics: 1. Understanding temporal variability in functional biodiversity and 2. Characterization of engineered nanoparticles in aquatic organisms: Gold nanoparticles and carbon nanotubes

For the twelfth consecutive year, Leiden University College The Hague has been awarded the 'Top Programme' quality label by the Keuzegids Universiteiten 2025. With an impressive overall score of 89 out of 100 points, the Liberal Arts and Sciences: Global Challenges (BA/BSc) programme has earned five…

Sustainable biotechnology, new insights into genome evolution and combining forces in mathematics. The NWO has awarded grants to these three innovative Leiden research projects in the ENW-M Open Competition.

In a full lecture hall C1 the Faculty of Science started off the new academic year on Tuesday 5 September. The theme of the meeting was, just as it had been at the university's opening the day before, sustainability.

On 5 September, spaceEU was launched at the Ars Electronica Festival in Linz, one of the world’s largest science, technology and media art festivals. This 1 million euro European-funded project is coordinated by Leiden Observatory. SpaceEU fosters a young, creative and inclusive European space community…

Cultural Anthropology graduate Tommie Lambregts conducted fieldwork in the Slaaghwijk neighbourhood in Leiden as part of a Policy in Practice research internship commissioned by the municipality. Leiden Science City nominated his research as one of four 'most impactful student projects'. Award ceremony…

The United Nations has declared May 22 the International Day for Biological Diversity. A moment of global reflection on everything on Earth and its indispensability. Anthropologist Marja Spierenburg stresses the importance of the interaction between natural and social sciences in addressing sustainability…

Leiden University has taken eighth place in this year’s SustainaBul, the sustainability ranking for universities and universities of applied sciences in the Netherlands. It was in 18th place last year.

On July 13, over seventy PhD students from Leiden and Delft came together at Katwijk beach for a workshop organized by the Casimir Research School: ‘So you have a degree in Science. Now what?’

Leiden University and The Hague University of Applied Sciences are going to increase their teaching and research collaboration. They signed a collaboration agreement to this effect on 8 May.

The ERC-funded project Rethinking Disability was featured in the Fȇte de La Science which was held on 11 October 2019 at Sorbonne University in Paris.

In its session of 15 April 2024, the Austrian Academy of Sciences elected professor Petra Sijpesteijn as one of its new Corresponding Members.

A leak developed in the mains water supply in the new building of Leiden University’s Faculty of Science at the Wassenaarseweg on Tuesday evening.

Political scientist Wouter Veenendaal (Leiden University) provides an in-depth case study of clientelism in Malta, the smallest member state of the European Union. He reveals that not only that patron–client linkages are a ubiquitous feature of political life in Malta, but also that the smallness of…

Why do communities form militias to defend themselves against violence during civil war? Using original interviews with former combatants and civilians and archival material from extensive fieldwork in Mozambique, Corinna Jentzsch (Leiden University Institute of Political Science) explains the timing,…

Where does Europe begin and end? How have the European Union and its precursors decided which countries are eligible to join the community and which are not? Few issues are more hotly debated, more important for the course of European integration, or more consequential for individuals in and around…

Citizens, journalists and scholars notice that foreign policy in, and of, the European Union, is ‘de-Europeanising’. Political scientist Daniel Thomas (Leiden University) offers a theoretical exploration of the likely implications. He expects that it will become more difficult for the EU to achieve…

Why do some civil wars experience quagmire, a situation in which belligerents are trapped in fighting? To explain this puzzle, Jonah Schulhofer-Wohl (Leiden University Institute of Political Science) analyses the overlapping strategic interactions between foreign powers and the warring parties. Studying…

PhD defence

The Spanish Society of Soil Science has chosen as the best thesis of 2015 (call 2016) in Spain to the CML-researcher Daniel Arenas Lago, for his research at the University of Vigo that expands and deepens in new knowledge about adsorption and retention of heavy metals in soils, an issue increasingly…

The SpaceEU project, coordinated by Leiden University, has launched an online toolkit with a collection of space-centred activities that engage people with the wonders of space. The toolkit is targeted at girls and underrepresented communities and can be used by schools, youth centres, museums, NGOs…

From a white leather armchair, on which Barack Obama once sat, Dean Michiel Kreutzer opened the academic year. This time not with visitors, but completely corona-proof via a live stream. In a homely setting, Kreutzer spoke with several guests, including Covid-19 researcher Thomas Hankemeier and brand…