The widely used pesticide thiacloprid can cause a large-scale decline in freshwater insects. This was discovered by researchers from the Living Lab in Leiden. For three months they counted the flying insects in the 36 ditches of the lab. Their research appeared in PNAS.

Professor of Dutch History prof.dr. H. (Henk) te Velde will become interim Dean of the Faculty of Humanities at Leiden University for a two-year term with effect from 1 March 2025. He will succeed prof.dr. M.R. (Mark) Rutgers. Mark Rutgers’ second term of office expires on 1 March 2025; he will be professor…

Depression has traditionally been linked to increased inflammation. Innovative research by psychologist Eiko Fried refutes this popular assumption. He shows that specific depression symptoms such as sleeping problems explain this relationship. Publication in Psychological Medicine .

In November 2019 visual artist and PhDArts candidate Riccardo Giacconi obtained the doctoral degree with the research project The Variational Mode. This summer Giacconi has been awarded a LUF grant for the research project The ‘Option’ aftermath in South Tyrol. The research will be conducted at the…

Without electronics carrying out computational tasks our daily lives would look very different. Devices such as elevators, vending machines, turnstiles, washing machines and even traffic lights use a simple form of electronic computing to switch from state to state. But, what if power supply is not…

Leiden PhD candidate Jo-Anne Verschoor discovered that nearly twenty percent of the bacterial strains she studied could degrade plastic, though they needed some encouragement to do so. ‘Bacteria are just like people,’ says Verschoor. Her research was published in the journal Communications Biology,…

President Joko Widodo was received on 22 April in the Academy Building at the Rapenburg by Rector Magnificus Carel Stolker and Henri Lenferink, Mayor of Leiden. Jet Bussemaker, Minister of Education, Culture and Science, was also present.

Graphene and other layered materials combine into completely new substances. Leiden physicists establish the ground rules for designing such materials by measuring how the layers in the stack interact. Publication on November 29 in Nature Communications.

Our solar system probably evolved in the same way as most of the other planetary systems around us. This has been shown by German-Austrian-Dutch research on more than 870 planet-forming disks in the Orion cloud A. The five researchers, including three from the Leiden Observatory, published their findings…

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.’

With a €1.5 million European grant, industrial ecologist Stefano Cucurachi will work on more sustainable production methods for the pharmaceutical industry. The Italian company Angelini Pharma intends to use the resulting knowledge to make its production process more sustainable.

The Faculty of Archaeology is running a funding scheme to assist small-scale projects that contribute to diversifying archaeological practice in all domains, including classrooms, laboratories, museums, and the field. We discuss the grant with two representatives from the Diversity Committee: Tuna Kalaycı…

Ramsey Albers wins Political Science Master’s Thesis Prize 2022

The MORE project covers the development of the new entrance area for the Leiden Bio Science Park. Partners Leiden University, the Municipality of Leiden and the Amstelveen-based development agency Yisheng signed the agreement on 18 March, marking the official start of the project.

Rigid materials break more easily than floppy ones. This simple observation allows to predict and control the width of cracks. Theoretical understanding of how materials break is useful in for example the production of cars or screens. Publication in PNAS.

The financial system needs complexity theory to predict economic crises like the 2008 meltdown. An international team of scientists, including Leiden physicist Diego Garlaschelli, state this in a paper published in Science on February 19th.

Plant scientist Omid Karami is the first winner of the Krijn Rietveld Memorial Innovation Award. The jury praises the outstanding quality of his scientific research as well as the positive societal impact and commercial potential of his work.

Farmers who commit to environmentally friendly working methods also actively practise nature conservation in their farming - particularly when this is not financed by the government. These are the findings of research carried out by Anne Marike Lokhorst, who will receive her PhD on 17 September based…

'Every year the courses are different, and there are new things to learn.' The 6th Leiden Summer School in Languages and Linguistics from 18-29 July this year has attracted 120 participants, 90 international and 30 from the Netherlands.

When focussing attention, the neurotransmitters noradrenaline and acetylcholine play an important role. This new finding made by psychologist Stephen Brown provides clues for further research on how focussed attention comes about. Dissertation defence on 16 June.

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…

The government spends millions regulating companies that work with large quantities of hazardous substances. But we don’t know whether this is making the industry safer. The number of violations and incidents remains constant. This is the conclusion of external PhD candidate Rob in ’t Veld in his dissertation.…

An evening program in the University Library and Middle Eastern Library in Leiden for everyone who has something to do with the Middle East; from Tajikistan to the Mahreb and from Istanbul to Sanaa. View the oldest books and clay tablets from the collection and listen to the most fascinating stories…

On Monday 11 December, human rights activist Ms. Wai Wai Nu will deliver the seventh Raymond and Beverly Sackler Distinguished Lecture on Human Rights at Leiden Law School. This events marks the annual celebration of International Human Rights Day, which was proclaimed in 1950 by the United Nations…

Many organisations have a biased workforce, even though diversity has so many advantages. Australian and Dutch researchers, including Leiden psychologist Romy van der Lee, have developed a solution based on a mathematical model. They published their findings in PLoS One on 28 July.

PhD student Robbin Bastiaansen applies mathematics to get insight in practical problems. By comparing mathematical models with developments in existing ecosystems, he hopes to demystify the process of desertification. His research has been published in Proceedings of the National Academy of Sciences…

The third and final introduction week at Leiden University is in full swing. Orientation Week Leiden (OWL for short) is giving a record 1,378 new international students the chance to get to know the city and one another. We got the lowdown from the new arrivals at OWLands Festival.

Dr. Mark Westmoreland (Institute of Cultural Anthropology and Development Sociology) and Dr. Francesco Ragazzi (Institute of Political Science) have been awarded a Seed grant for their project, ‘Other “ways of knowing”: should we prepare for a post-textual turn in the social sciences?’. The grant amounts…

During the 80th session of the Geneva-based Institut de Droit International, Aleydis Nissen was awarded the Andrés Bello Prize. The competition was established by James Brown Scott in 1931 and is carried out under the auspices of the Institut.

Workshop brings multidisciplinary experts together to debate proposed detection technologies and their impact on fundamental rights.

Last year, chemists Dennis Wander and Hermen Overkleeft contributed to an important discovery about a widely used cancer drug. Their research has now been recognised as Finalist for the PNAS Cozzarelli Prize in the Biomedical Sciences class.

Prof. C. Bakels is an archaeobotanist who devoted most of her career researching farming, its (pre)history and influence on the landscape. Born in 1942, she got her first appointment as a lecturer at Leiden University in 1968. On Monday 16 April, we celebrated her 50th work anniversary.

The emergence of 'illiberal democracies' and the protection of human rights in Europe.

For the first time, physicists have visualized the ‘melting’ of electrons inside a special class of insulators. It allows electrons to move freely and turns the insulator into a metal and possibly later into a superconductor. Publication in Nature Physics.

Three cybersecurity consortia that Leiden University is part of have been awarded subsidies of over a million euros by NWO. Leiden is the coordinator for two of the projects.

At the start of the COVID-19 pandemic, researchers from 15 departments at Leiden University Medical Center (LUMC) realised they could do more for patients if they joined forces. This is how the BEAT-COVID group has been able to rapidly gain knowledge about COVID-19, the role of the immune system and…

A bacterium hiding from the immune system and picking up bits of DNA from its environment. The result: gaining new traits, such as better protection against antibiotics. Fortunately, we have not found such a damning scenario yet. However, PhD student Renée Kapteijn did find the first clues, which…

On 27 June 2017, Daniel Dimov will defend his PhD dissertation “Crowdsourced Online Dispute Resolution”. The defence will commence at 16.15 hrs, in the Academy Building of Leiden University, Rapenburg 73. The supervisors are Professor H.J. van den Herik and Professor A.R. Lodder.

On 1 March 2023, the Dutch Safety Board (Onderzoeksraad Voor De Veiligheid, OVV) published its report on the protection provided by the Dutch security services and lessons learned from three cases. The OVV was highly critical of the use of key witnesses and the protection offered to them. Jan Crijns,…

An international team of astronomers has witnessed a cosmic weather event that has never been seen before.

PhD candidate Karen van den Akker has written a children’s book to get young girls excited about technology. The picture book ‘Met mama naar Mars’ tells the story of Luna, who wants to travel to Mars.

Jacques J. M. van Gent (8 June 1932 - 26 March 2021) was director of Leiden University Library from 1983 to 1993. He was librarian in a time of transition and, as director, was able to benefit from the new library building on the Witte Singel. Van Gent was a very different kind of manager from his predecessor,…

El viernes 3 de noviembre a las 11.15 tendremos el gusto y honor de escuchar a la Prof.dr. Sayak Valencia en el marco del X Congreso Internacional de la AHBx. Prof.dr. Sayak Valencia (Tijuana, Mexico, 1980) impartirá la segunda conferencia plenaria del X Congreso Internacional de la AHBx bajo el título:…

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…

Tiny selenium particles could have a therapeutic effect on ischemic brain strokes by promoting the recovery of brain damage. Pharmacologists, including Alireza Mashaghi from the Leiden Academic Centre for Drug Research discovered that selenium nanoparticles inhibit molecular mechanisms that are responsible…

In a world where bacteria are increasingly resistant to antibiotics, Emma van Groesen set out to find a solution. This month she obtained her PhD, after four years of research into new variants of the antibiotic vancomycin. With success.

No less than four Leiden research teams have been awarded a grant by NWO. On 27 July NWO honoured 21 applications in the Open Competition ENW-XL. NWO awards the grants to consortia in the exact and natural sciences who are doing unconnected fundamental research that is 'driven by curiosity'.

Topology is an emerging field within many scientific disciplines, even leading to a Physics Nobel Prize in 2016. Leiden physicist Marcello Caio and his colleagues have now discovered the existence of topological currents in analogy to electric currents. Publication in Nature Physics on January 14th.

On Monday 14 November, the first spadeful of earth was dug for the construction of the Living Lab, an experimental test site to study living organisms in freshwater. A total of 36 ditches will be dug out to create a natural environment where researchers can study the effects of chemical compounds from…

On 28 October 2016, prospective female students explored the natural sciences at the annual Physics Ladies’ Day. This event, specially for girls in the final two years of high school, was being held for the third time. 'You don't necessarily have to be top of the class.'