Harold Koster is a Professor of Company Law at the Institute of Private Law and is Head of the Department of Company Law and Financial Law.

Liesbeth works as of 2019 as an Assistant Professor at the Department of Health, Medical and Neuropsychology. Before joining the Department, she worked as a Researcher/Research Fellow at Nivel (2008-2012 & 2015-2018); UMC Utrecht (2016); OLVG (2017-2018); and King’s College London, Dept of Palliative…

When Dutch citizens request information under the Open Government Act (Woo), third parties can ask the public authority to withhold certain information. Leiden research reveals that the position of these third parties is unclear and accessing information is a difficult process.

From social inequalities in prehistory to placebo effects in medical treatments. Four researchers from Leiden University have been awarded a prestigious ERC Advanced Grant worth EUR 2.5 million to develop their research.

Information provided by the Tax and Customs Administration is something that concerns every citizen. So it is not surprising that the Tax hotline receives around 10 million calls each year. The Benefits Affair emphasised the citizen’s perspective in communications with the Tax and Customs Administration.…

ICT

The Dutch Tax Authorities leaked information about an international tax audit to Uber. In addition, they ‘obstructed and delayed’ an investigation by other EU Member States, says the International Consortium of Investigative Journalists (ICIJ) based on internal documents from the tech company.

It’s Cybersecurity Awareness Month, and we’re spotlighting the importance of digital safety in the workplace. Our Chief Information Security Officer, Sylvia Bunte-Thelen, shares how staff can help keep our university a safe place to work and study. ‘We need to work together to protect our knowledge.…

Jörg Meyer investigates energy conversion at interfaces at the atomic scale. Starting from the Schrödinger equation, he develops and employs computer simulation techniques.

Mark Somers focuses his research on the role of surface atoms in the reactive scattering and diffraction of hydrogen from metal surfaces. He hopes to achieve 'quantum supremacy': taking all relevant dynamical surface effects into account at a quantum dynamics level.

Prof. Dr. Ir. Johannes G.E.M. (Hans) Fraaije is Professor of Physical Chemistry at the Leiden Institute of Chemistry.

Jet Bussemaker (1961) is professor Policy, science and societal Impact, in particular in health care, at Leiden University Medical Center (LUMC) and the Faculty Governance and Global Affairs (FGGA) at Leiden University. With her interdisciplinary education and research activities Jet Bussemaker addresses…

Alies Jansen is a PhD candidate in Global Transformations and Governance Challenges at the Institute for History at Leiden University. In 2025, she is a visiting researcher in the Program in Science, Technology, and Society at the Massachusetts Institute of Technology (MIT).

I am a University Lecturer in Global Political Economy of China at the Institute for Area Studies. I also work in the Global Transformations and Governance Challenges Stimulus Program at Leiden. I study environmental politics and international political economy with an emphasis on developing countri…

In a landmark ruling, the International Court of Justice says that states are obliged to protect the climate. Jolein Holtz, a climate and human rights expert, believes the Court is too vague about the impact for future generations: ‘A missed opportunity’.

The year 2023 saw the earthquake in Turkey and Syria, the Wagner Group rebellion and wildfires and floods as all the weather records were smashed. Our most-read stories were about the climate crisis and the elections: here’s the list.

My main research subjects are urban flora and citizen science. I am working on a citizen science project where we map out where and what different pavement plants grow in cities and towns, together with citizens. Additionally, we want to see if participants will develop more attention for urban flor…

René Kleijn holds an MSc in chemistry and a PhD in Industrial Ecology both from Leiden University. He is now an associate professor at Institute of Environmental Sciences (CML) at Leiden University.

An organisation the size of Leiden University requires careful internal communication.