The circular economy is typically seen as the progressive alternative to our wasteful linear economy, where raw materials are used to make the products that feed today’s rampant consumerist hunger, which are then thrown away. In a fascinating article, archaeologist Maikel Kuijpers reflects on the recycling…

Why do we sometimes speak more slowly or more rapidly, and why do we sometimes have a longer pause between uttering particular words? This has to do with whether you are about to use a noun or a verb. This is the finding from research by an international team led by linguist Frank Seifart from the University…

Students, staff and alumni of the Faculty of Social and Behavioural Sciences joint forces to interact, debate, pitch, and speed date together at the Connecting Social Sciences science festival on Friday 22 November, 2019. After the opening speeches and panel discussion on science and societal impact,…

Plants can’t run away from enemies. Still, it would like to keep life-threatening herbivores at a distance. This can be done with odours. Klaas Vrieling of the Institute of Biology Leiden found out with his team how plants change odour production to keep the munchers at a distance.

Recently Professor Joanita Vroom’s book Feeding the Byzantine City was published by the prominent academic publishing house Brepols. This volume is the fifth in a series called Medieval and Post-Medieval Mediterranean Archaeology, of which she is the editor. ‘This series aims to offer new perspectives…

The Faculty of Humanities offers an inspiring international working environment with room for diversity and innovation to staff and students from home and abroad.

On 15 March, beta students looked for their match during the Bètabanenmarkt at the new Gorleaus Building. This 33rd edition was the biggest ever, with an impressive 53 companies and 1060 registrations. The CEO of Siemens Ab van der Touw opened the career event.

Evidence-informed policy-making is crucial for good governance. Yet, despite the abundance of evidence from research and evaluation available to decision-makers, we know little about the actual influence of evidence on government policies. The ‘Power of Evidence’ (PoE) research programme, directed by…

A computer can look at, and learn from, many more images than a human specialist. AI systems are rapidly becoming indispensable for medical and biological applications. But they still have to learn how to explain their decisions.

How humans and rats cohabit the cityscape and what consequences this has for both sides of the conflict?

Making predictions about emotional problems or the effects of air pollution: Marjolein Fokkema’s algorithms are getting better at this all the time. She is making her algorithms increasingly flexible, so they can predict not just characteristics at one particular moment, but also how skills, for example,…

Neural networks have a wide range of applications. In Leiden, psychologists use them to build robot brains, whereas archaeologists use them to hunt for prehistoric graves.

The ‘Schijf van Vijf’ is the Dutch official dietary guideline, similar to a food pyramid, that shows what a healthy daily diet looks like. The updated version places more emphasis on plant-based eating. But how big is the impact of that shift really? We asked environmental scientist Joran Lammers.

Lecture

On Tuesday 8 November, Americans will go to the polls for the so-called midterm elections. 'We tend to look at this election as if it were a poll on Biden. But it’s not a presidential election,' emphasises associate professor Sara Polak.

For 20 years, Comenius has been affiliated with the University of Groningen and organizes courses - both nationally and internationally - around personal leadership. The Comenius Courses are designed for experienced directors and managers from the public and private sectors such as general managers…

Tiny self-propelling spheres, measuring only micrometers, move faster over a hydrophobic silicone surface than they do over hydrophilic glass. 'Almost nobody had realised that the substrate matters', says Stefania Ketzetzi, the researcher who discovered the effect, researched it and explained it. She…

Election Day is over, but it's by no means clear who the new President of the United States will be. On the morning after Election Day, US expert Sara Polak relects on the results that are in so far, and looks ahead to the coming days.

Maarten Aalbers was invited as a guest speaker by the University of Bergen (Norway) to present his views on the joint application of state aid law and free movement law concerning the adoption of sugar taxes.

Dutch astronomers have measured a superstorm for the first time in the atmosphere of an exoplanet, the well-studied “hot Jupiter” HD209458b. The very high-precision observations of carbon monoxide gas show that it is streaming at enormous speed from the extremely hot day side to the cooler night side…

On 27 September the European Commission informed the International Skating Union (ISU) of its preliminary view that its eligibility rules under are in breach of EU antitrust rules.

Associate professor Eric Storm discusses the return of imperial ambitions in global politics on The Conversation. He argues that leaders like Putin, Xi, and Trump challenge the post-WWII international order.

Europe’s security suddenly looks uncertain now President Trump has started negotiations with Putin. What does this mean for the Netherlands? What do we need to do?

There is a growing conflict between the US and the EU about the investigation by the Commission under the EU State aid rules into so called

The COVID-19 pandemic and associated measures during the first lockdown in the Netherlands in March 2020 caused major changes in daily life. Parents worked from home and children followed school online. Therefore, the families were forced to spend more time together. This is particularly difficult for…

On 8 February 2016, Dr Jennifer Tour Chayes, Director of Microsoft Research in Boston and New York, will be presented with a Leiden honorary doctorate by Frank den Hollander, Professor of Probability Theory and Statistical Physics.

Jeanine de Roy van Zuijdewijn, researcher and lecturer at ISGA, was interviewed by Deutsche Welle (DW) on the topic of career foreign fighters. This is also the topic of study in her latest publication.

From towering mechanical heroes to city-destroying battles, giant robots have become one of the most iconic images in Japanese animation. On 28 April 2026, Leiden University will host

As of 1 April 2025, Lodewijk Govaerts will be standing down from the Board of Governors due to other commitments that will demand a significant part of his time and attention within the foreseeable future. Govaerts does not want this to affect his ability to fulfil his role on the Board of Governors…

The 2017 Nobel Prize in Physics has been awarded to Rainer Weiss, Barry Barish and Kip Thorne for their work on the measurement of gravitational waves. Thorne was Lorentz Professor in 2009 in Leiden. Physicist Jan Willem van Holten explains why this is such an important discovery. ‘A new branch of astrophysics…

On March 18 2016 Pieter van Cleynenbreugel and Maarten Aalbers discussed recent developments in EU internal market law and EU state aid law at the International Colloquium on EU Law.

On 3 March 2016 the book “The European Convention on Human Rights: A Commentary” by prof. dr. W. A. Schabas has been selected by The Executive Council of the American Society of International Law (ASIL) to receive the 2015 Certificate of Merit for High Technical Craftsmanship and Utility to Practicing…

Cultural anthropologist Annet Pauwelussen has been invited by the University of Washington to participate in an expert meeting on 'Global Measures of the Contribution of Small-Scale Fisheries to Sustainable Development'. 29 - 30 May 2018, Seattle.

At the International Astronautical Congress in Washington DC last week, IIASL alumna Thea Dethlefsen (Denmark/Norway) won the I.H.Ph. Diederiks-Verschoor Award, given each year by the International Institute of Space Law (IISL) for the best paper by a young author.

President Donald Trump’s decision to freeze U.S. foreign aid is raising concerns about ceding global influence to China. The Associated Press explores how this shift could weaken America’s soft power, traditionally used to build alliances and counter adversaries.

Dr. Van Eijk will teach an advertising technology Masterclass for the Future of Privacy Forum (FPF) next week. It is the fourth session of the FPF & Brussels Privacy Hub's Digital Data Flows series. Van Eijk will be teaching alongside Adam Towvim (Brandeis International Business School) and moderated…

What languages do you speak? According to Felienne Hermans, ‘Python’ could be an answer to this question. Hermans studies how people learn to program at the Leiden Institute of Advanced Computer Science (LIACS) of Leiden University. In an article of the NewScientist she explains why programming is similar…

Last week, Dr. Larik’s article entitled

First author Scott Waitukaitis and principal investigator Martin van Hecke have made the cover of Nature Physics with their publication on a newly discovered effect. The Elastic Leidenfrost effect explains why hydrogel balls jump around on a hot plate making high pitched sounds.

The Netherlands has a lot of world-class speed skaters and footballers. Clever statistical analyses could help them perform even better. Leiden University is working on this together with Delft and Amsterdam.

How can Ronald Mulder run his skates across an ice layer at 60 km/h? His skating blades get help from a lubricating layer of meltwater. In Leiden, physicists found this explanation to be incomplete. Theoretician Hans van Leeuwen and experimental physicist Tjerk Oosterkamp searched for a deeper answe…

Leiden University Centre for Linguistics (LUCL) is an independent institute within the Leiden University Humanities Faculty. A Management Team, consisting of an Academic Director, a Director of Education and an Institute Manager, is responsible for the overall running of the institute. This team is…

Something that a year ago would have been unthinkable has become a reality on 12 June: Donald Trump and Kim Jong-un sat down together to talk about nuclear disarmament. Can these two hardliners reach agreement in the negotiations? Professor of Korea Studies Remco Breuker is doubtful. 'As it looks now,…

An international team of researchers led by Leiden University (the Netherlands) has mapped nine gigantic collisions of galaxy clusters. The collisions took place seven billion years ago and could be observed because they accelerate particles to high speeds. It is the first time that collisions of such…

Speech Prosody 2024 includes three workshops.

Asian Studies at Leiden University is unparalleled in the Netherlands and combines the very best of Asia-related research in North-West Europe.