The small quantum world and our world of perception obey different laws of nature. Leiden physicists search for the border between both worlds. In an article published soon in Physical Review Letters they set an upper limit.

Proving a quantum computer to be quicker than a normal one is one step closer. After a breakthrough in speeding up classical algorithms, researchers Vedran Dunjko and Casper Gyurik showed that only one quantum algorithm could beat its classical counterpart. They discuss their discovery in Quanta Mag…

Terwijl NAVO-landen hun defensiebudgetten fors verhogen, ontstaat ruimte voor start-ups om innovatieve technologie te leveren. De flexibiliteit en snelheid maken hen aantrekkelijk voor defensie, maar de opmars brengt ook risico’s met zich mee, waarschuwt Louisa Handel-Mazzetti, promovenda bij Lucht…

The development of smart cars, video games that adapt to your gaming behaviour, law enforcement assigning your neighbourhood a risk score, insurance rates determined by your behaviour, finding your perfect match via an app: Artificial Intelligence (AI) is rapidly and radically transforming our interactions…

Wat is er allemaal te doen rondom de universiteit in Den Haag?

As fruit and vegetables ripen, ethylene gas is released. Ethylene also influences the speed at which they ripen. Chemist Tom van Dijkman studied how small and inexpensive sensors can be made that measure ethylene concentrations during transportation. PhD defence 12 May 2016.

Willem Heiser receives the 2017 Psychometric Society Career Award for Lifetime Achievement. 'Receiving this prize from my colleagues makes me very happy.' Heiser is professor emeritus in Psychology, Methodology and Statistics at the Leiden Faculty of Social and Behavioural Sciences and professor of…

Professor of Media Law and Information Society Tarlach McGonagle is concerned about the increase in online disinformation and hate speech. He argues that human rights should guide new policies for the online world. McGonagle will give his inaugural lecture on 9 May.

Leiden biotech company In Ovo, a spin-off of Leiden University, has received a European Innovation Council Accelerator Pilot Grant. In Ovo will use this 2.5-million-euro grant in its mission to stop the culling of male chicks.

International law experts have voiced concerns about the recent attack on Iran. Legal philosopher Andreas Kinneging expressed a different perspective in an interview with ‘Trouw’ newspaper: 'In times of crisis, the best in people comes out.'

Lecture

While tens of thousands of visitors dance to deafening music, a team of Leiden psychologists are trying to collect data for their research at Lowlands. How do festivalgoers experience a virtual trip? And what role do factors such as too little sleep and whether they have experience with psychedelics…

Corinna Jentzsch and Wouter Veenendaal, two political scientists affiliated with Leiden University’s Institute of Political Science, have been awarded a NWO ‘Veni’-grant. This grant brings them official recognition as ‘young outstanding researchers’, as well as financial support for conducting independent…

A whole week was dedicated to fair partnerships and equitable exchange in Leiden-African education and research

The annual New Year Lecture for Honours College Law took place on Friday 17 January. This year’s speaker was Barbara Zwirs, author and former assistant professor in criminology at Leiden Law School. Her lecture got 2025 off to an inspiring start.

On June 16, 2025, the Institute of Political Science at Leiden University hosted a panel debate about the ongoing mass student-led protests in Serbia. The protests have shaken the increasingly illiberal regime in Serbia to its core and have grown into the largest student protests in Europe since 196…

Alumnus Rennie Roos lives and works in Indonesia. What took him there, what does he do there and what inspires him?

When Russia invaded Ukraine at the end of February, normal life there came to a halt. To ensure that affected students and researchers can continue their studies and work, professor Ellen Rutten (UvA) and assistant professor Dorine Schellens (Leiden) set up an international mentor network.

Often landscape restoration is seen as a quick technical fix, when a long-term and more sensitive approach is necessary. Within her PhD research, conducted over the past five years in South Africa, Ancois de Villiers explored how we can change this approach. ‘A damaged ecosystem can’t be

The section Air & Space Law of the institute of Public Law of the Leiden Law School is looking for a

How can the academic world best handle the new political reality in the United States? This is the question that managers, lecturers, researchers and students at Leiden University discussed on Friday afternoon at a gathering in the Kamerlingh Onnes building. ‘Don’t just give in; defend academic free…

Apps to help people stop smoking, eat more healthily or exercise more are everywhere. eHealth programmes are abundant, yet they are often not accessible to people with lower incomes and levels of education. For her PhD research, Isra Al-Dhahir investigated how this could be improved.

Helping industry to spot dangerous and climate-harming gas leaks faster, cheaper, and more reliably than today’s tools: that's what Leiden University and BigCircle Ventures set out do in a new spin-off company.

This page features an overview of relevant lectures, publications and conference papers.

The Institute of Criminal Law and Criminology conducts extensive research on imprisonment. Sending a person to prison is the most severe form of punishment that can be applied in the criminal justice systems of European countries. In most countries, the number of prisoners has risen in recent decades.…

This is an Erasmus+ International Credit Mobility project of Leiden University’s Faculty of Medicine with Haramaya University in Ethiopia.

At the Humanities Hub, researchers can immerse themselves in the world of Digital Humanities, while students get the opportunity to develop their digital and media skills within the field of the humanities. The lab spaces of LUCDH, the Faculty of Humanities, and Journalism and New Media provide modern…

The Division of Systems Pharmacology and Pharmacy (SPP) aims to develop precision medicine approaches to characterise and predict variation in treatment response and enhance translational drug development strategies.

Masses of hamburgers, steaks, cheese and a lot of eggs: Americans love their animal products. But researcher Oliver Taherzadeh discovered that only a relatively small group of high-volume consumers need to modify their diet to achieve an enormous environmental gain.

The "Van Marum Colloquia" are a collaborative lecture series between the LION and LIC institutes, focusing on fundamental and applied surface science.

After 25 years, December will finally see the launch of the long-awaited James Webb space telescope. Leiden astronomers are watching with great excitement: not only were they involved in the construction of important instruments on board, the telescope will also reveal many new secrets of the universe,…

From studying molecules in the blood of corona patients to developing a new concept for vaccines. The Leiden Academic Centre for Drug Research (LACDR) has transformed many ongoing projects into Covid research projects. Hubertus Irth, scientific director of LACDR, talks about the role of his institute…

Over a decade ago the then foreign minister Abdullah Gül awarded me the “Medal of High Distinction” of the Republic of Turkey. I received the award, consisting of a diploma and a gigantic gold medal, during a festive ceremony at the Turkish embassy in The Hague. The reason I was deemed worthy of the…

Unemployed people often need not only a financial safety net but also a stimulus to look for work. PhD candidate Heike Vethaak researched the effects of incentives used by benefit agencies, such as compelling people to widen their job search.

In 2018, the Institute of Environmental Sciences (CML), born out of activism, exists for forty years. The institute celebrated this on 28 June in the Stadsgehoorzaal in Leiden. In the morning, proud directors and researchers looked back and forth. After this several experts discussed the current environmental…

Over the last 5-6 years Burkina Faso has become seriously implicated in the rapid and dramatic changes in the geopolitical situation in the Sahel. The country, once reputed for its stability and safety, has come under the spotlight for the number of violent attacks and of internally displaced people.…

Rianne Scheerhoorn is a government trainee at the Ministry of Economic Affairs and Climate Policy and the Ministry of Agriculture, Nature and Food Quality. After completing her Bachelor's and Master's degrees in Public Administration, she was sure that the Central Government Traineeship Programme (Rijkstraineesprogramma)…

This summer postdoctoral researcher Mónica Varela from the Institute of Biology Leiden was awarded a Veni grant from the Dutch Research Council (NWO). Six questions about her project and hopes for the future.

From closed government systems in the Middle East to an exceptionally open Dutch government. Public administration lecturer Alex Ingrams is an expert on transparency: ‘Why are some countries secretive? And what role does technology play?’

Universities cannot survive in this highly competitive world without collaboration. And the ultimate aim is to make the world a safer and more sustainable place. This was Rector Carel Stolker’s message during the 441st Dies Natalis.

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.

Ever since Nadine Akkerman, Professor of Early Modern Literature & Culture, came across a woman spy in her research, secret agents have kept cropping up in her work. Now there’s Spycraft, a popular history book exploring the espionage techniques used by early modern spies, which she has co-written with…

Stopping people at the border does not result in less refugee migration, but providing relief in the region where migrants come from does. What else would be wise for the next government to do in terms of immigration?

Adolescents with good friendships experience fewer anxiety and depression symptoms, PhD student Iris Koele discovered in her research on high school students' social relationships. 'As a psychologist, I include friends in the treatment plan: who do you call when things are not going well?'

What’s it like to study a certain programme within the Faculty of Humanities at Leiden University? These prospective students found out during the Experience Day on Friday 6 April. They had a taste of the faculty’s atmosphere and discovered what study programmes are actually about.

How can society let go of its obsession with economic growth and focus on goals as wellbeing, inclusion and sustainability? This is one of the core questions which a new 3 million euro European project will tackle the upcoming four years. Leiden University researcher Rutger Hoekstra is project coordinator…

During the Faculty Staff Meeting of August 28th, Corinne Hofman spoke about her time on the Faculty Board. “I look back on a rich decade in which I have seen the Faculty, and the University as a whole, change at a rapid pace.”

It is with profound sadness that we have learned of the passing of our colleague and friend, Dr Harold M Hays. Harold passed away on Wednesday 20 November, in his sleep, as a result of heart failure.

How can I align science, society and myself to address today’s major challenges? That’s what students of the Honours College track ‘Science, Society and Self’ aim to find out. How do their classes at honours differ from their regular education?