A moon rock from the Apollo 17 mission, antique globes and the cosmos according to Wassily Kandinsky. Ewine van Dishoeck, Professor of Molecular Astrophysics, has put together an impressive exhibition at Rijksmuseum Boerhaave.

At the end of the year we always compile a list of our most interesting, most popular articles from that year. In the crazy year that was 2020 one topic was at the forefront of everyone’s minds: coronavirus. Fortunately, there was also room for other stories.

Why is the sky blue? Why are most people right-handed? Why are spiderwebs so strong? These are just some of the questions arriving at Postbus 71, a Leiden2022 project where everyone can ask their questions. Friso de Hartog, the driving force behind Postbus 71, is busy answering as many questions as…

Epithelial cells play a crucial role in the lungs. PhD student Ying Wang researched the effects of cigarette smoke and viruses such as COVID-19 on these epithelial cells. ‘We hope to reduce the risk of pandemics in the future.’

On 10 May 2021, Melanie Fink and Barbora Budinská published their views on recent developments in the areas of EU regulation of Artificial Intelligence and the Banking Union respectively as Op-Eds on EU Law Live.

On Tuesday 26 June Linlin Sun will defend her dissertation entitled ‘International Environmental Obligations and Liabilities in Deep Seabed Mining’. The dissertation has been written under the supervision of prof. dr. N.J. Schrijver and prof. dr. E.C.P.D.C. De Brabandere.

Manufacturers produce high-end technology mostly top-down with large machinery, but small particles are able to build structures by themselves from the bottom up. A major challenge is that these particles easily clump together. Leiden physicist Daniela Kraft has developed a method to use this phenomenon…

A day at the beach, games, a visit to an embassy and a pub crawl. The activities at HOPweek help new students get to know not just The Hague but each other too.

While Old Germanic studies might seem dated and, regrettably, occupies a less than secure position in various academic institutions, exciting new research presented by young researchers shows that the field is still vibrant and may have a bright future. On Thursday, the 7th of April, the ‘Junius Symposium…

Leiden University College The Hague is an international honours college of Leiden University situated in the world’s capital of Peace and Justice. LUC The Hague provides a unique combination of world-class scholarly depth, drawn from the oldest university in the Netherlands, with a cutting-edge and…

Medicines do not follow the one size fits all principle, because genetic differences can influence their efficiency. That is what research by PhD candidate Julia Hillger shows. She defends her PhD dissertation Take it Personal on Thursday 7 December.

The organisational network in and around a primary school influences the school’s achievement, according to Petra van den Bekerom. Effective networking allows problems to be countered more easily. PhD ceremony on 8 November.

Professor Jenny Doetjes at Leiden University researches similarities and differences in languages, specifically in the area of numerals and quantifiers. Her research provides insight into language patterns, bu also in the working of the human brain. Inaugural lecture on 26 January.

Four scientists from the Faculty of Science will receive a grant of up to 50,000 euros in the Open Competition Domain Science - XS from science financier NWO. This category emphatically strives to encourage curiosity-driven and bold research involving a relatively quick analysis of a promising idea.…

Jos F. Brosschot has been appointed as a professor by special appointment on the chair ‘psychophysiological mechanisms of stress in daily life’. This chair has been created by the Foundation for Research into Psychosocial Stress.

Light reflects from a mirror, but where exactly does this reflection happen? Well, it depends, Martin van Exter and Corné Koks discovered. Their precise calculations, published in Optics Express, are important for designing optical cavities for quantum communication.

Spying in the seventeenth century was a man’s job. That had been the prevailing impression, until the Veni research by Nadine Akkerman from Leiden University...

Leiden physicists have developed a way to address how accurately a superconducting single photon detector (SSPD) can be characterized by detector tomography. SSPDs are not fully understood, and tomography is a key element to determine how these devices detect light. A better understanding of these detectors…

Philosophy has an important contribution to make to society, says Professor of Practical Philosophy Glen Newey. You need people who can think clearly, certainly in positions of power and authority. Newey stresses that “there will always be a place for philosophy”. An introduction to the practically…

Good education is the basis for a fair and sustainable society. To maintain a high level of education, teachers, pupils, lecturers and students need new resources. One of the ways that Leiden University supports them in this is by conducting academic research, largely together with practicing teaching…

Various projects at Leiden University have been awarded an Erasmus+ grant, an EU funding tool. This is a substantial boost to the internationalisation of our research and teaching.

Andrea Evers is the new Professor of the brand-new unit of Health, Medical and Neuropsychology. She's getting off to a flying start in Leiden with a consolidator grant of the European Research Council (ERC). Her ambition? 'To work together with other disciplines; that way we can arrive at new insigh…

Using a clever experiment, PhD candidate Shengxiang Yang discovered how gold electrodes convert water into oxygen. He is the first to unravel the mechanism of this reaction. Yang published his results in the journal ACS Catalysis.

On Friday, 2 December 2022, PhD candidates connected to the Institutions for Conflict Resolution (COI) research group participated in a Skills Lab focusing on the skill of writing empirical legal research papers.

The 2018 King's Speech was a string of statements containing little or no substance. It was obvious that, in an attempt to keep all the coalition parties happy, the speech covered more issues than in 2017. This is confirmed by an analysis of the speech carried out by public administration experts Gerard…

Good teaching isn’t as easy as it might seem. In November, the Month of Open Teaching, staff at Leiden University therefore have the opportunity to ‘spy’ on talented colleagues. ‘We are making it as easy as possible to see what the neighbours are up to.’

PhD student Wen Yang discovered how certain cell receptors in E. coli bacteria signal 'smells'. With the use of ice-cold electron microscopy microbiologists from Leiden gain more insight into how bacteria respond to their environment. Publication in mBio.

CERN has approved the construction and operation of SND@LHC, a neutrino detector at the Large Hadron Collider. It's a precursor for SHiP, a detector meant to detect dark matter. Leiden physicist Alexey Boyarsky is one of the initiators of both SHiP and SND@LHC.

In March, the Honours Academy will be launching two new Master Honours Classes. In these classes, students with a curious mind will have the opportunity to do research into the relationship between humans and nature or to work on an innovation for the healthcare sector. ‘This will allow students from…

Giving lectures, marking exams, essays or theses, supervising students and PhDs, doing research and, as if that wasn’t enough, also trying to raise the necessary funding. There is a limited number of funds for academic research and a large number of applications. Many of our researchers therefore experience…

When abusive mothers hear crying babies, their autonomous nervous system does not react strongly enough. This is the conclusion reached by Sophie Reijman, PhD candidate in Child and Family Studies, in her research. This finding may provide leads for reducing child abuse. Defence on 16 December.

They might not have had Twitter, but they did have brochures (pamphlets), the Roman Catholics and ‘modern’ Protestants between 1840 and 1870. In these, they launched a passionate attack on each other’s ideas. Ineke Smit has catalogued the brochures from the collection of the University Library and outlined…

Adrian Hamers is researching the way in which celestial bodies orbit each other, now and in the future. This often turns out to be more erratic than you might think. He will defend his PhD dissertation on 21 June.

Leiden physicists have managed to detect a single molecule called dibenzoterrylene in a new crystal, and found that it is a candidate component for a quantum network. Future quantum computers will need such a network to work together while maintaining their advantages. Publication in ChemPhysChem jo…

Collaboration within Europe is currently at a low ebb. This is threatening to undermine our freedom and the rights that are anchored in the European legal order, says Piet Hein Donner, Vice-President of the Council of State and Cleveringa professor at Leiden University for 2015. His lecture on 26 November…

What is it like to be old? Many young people cannot really imagine what it is like. For a group of Honours students, however, this question has been answered. They had the chance to wear an age simulation suit during the Bachelor Honours Class ‘Vitality and Ageing’.

A chair tipping over serves as a metaphor for a migraine attack in Thijs Perenboom’s PhD research at Leiden University Medical Center (LUMC). He wants to unravel whether and how we can predict migraine attacks. He will defend his thesis on Tuesday 21 June.

On 1 August, Lars Jeuken started work as Professor of Biophysical Chemistry at the Leiden Institute of Chemistry (LIC). His research is at the intersection of biology and chemistry, but also involves physics and nanotechnology. Jeuken: ‘By linking nanoparticles to proteins and bacteria, we want to convert…

Asexual procreation in female wasps leads to an accumulation of genetic mutations, and the shrivelling of their sex organ. Leiden biologist Ken Kraaijeveld published this discovery in Evolution. His research is one of the first experimental studies into the consequences of asexual procreation.

America’s dominance of the world stage is coming to an end. These were the words of Professor Amitav Acharya in his guest lecture in The Hague on 5 February. ‘But the world really won’t be plunged into immediate chaos.’

Baroque flautist Jed Wentz followed two years of dancing classes in order to develop the right feeling for the gestures required for the Baroque French opera genre ‘tragédie en musique’. On 9 December Wentz defended his PhD thesis on the subject, and on 8 December he gave a concert in the context of…

‘Politicians act only in their own interests. The common man does not interest them at all.’ And, ‘The debate in parliament was a sorry sight and demonstrated incompetence.’ These are two pieces of criticism that you might read in tomorrow’s newspaper. But they were actually in the papers at the time…

‘The Netherlands’ response to coronavirus is inconsistent.’ These are the words of Leiden political scientist Arjen Boin, an expert in crisis management. Vulnerable groups such as the elderly need more personalised advice. ‘It would be better to cancel bridge tournaments than football games.’

Women in the Middle Ages often wore better quality clothes than men. This is one of the conclusions drawn by Leiden archaeologist Chrystel Brandenburgh, who studied textile remnants from the period from 400 to 1000 A.D. PhD defence 10 May.

The new Erfgoed Gezocht/Heritage Quest website means you can play armchair detective and hunt for undiscovered burial mounds in the Veluwe. This will help stop them being destroyed by construction projects. The website is the initiative of the Leiden University Faculty of Archaeology in collaboration…

What chemicals do plants have available, and what happens if they use them when faced with bacteria or fungi? That is what PhD candidate Luis Salomé Abarca is keen to learn. He studies plants’ survival and their use of chemical components in communication and defence. Salomé Abarca works at the Natural…

Patients on patient forums share all sorts of things about their illness: from side effects and advice to messages of support. PhD candidate Anne Dirkson uses artificial intelligence (AI) to retrieve this information. ‘Ninety per cent of the side effects weren’t officially registered.’

Proud family members, lecturers and, above all, students congregated in the Van Steenis building on 27 June to celebrate the students' having completed the Preparatory Study Year in Leiden.

An international team of astronomers including Leiden scientists publishes the image of a young star with a surrounding dust disk that is still being fed from its surroundings. The phenomenon around the star SU Aur may explain why so many exoplanets are not neatly aligned with their star. The European…