Nanomaterials can pass much further along the food chain than was previously thought. The particles can change shape and size in each organism, enabling them to pass on to the next one in the chain. Researchers from the Institute of Environmental Sciences discovered this accidentally when using a novel…

The Hortus Botanicus is celebrating its 425-year anniversary this year. It’s the oldest botanical garden in the Netherlands, but how did it come into existence and what kind of research takes place there?

It's pretty hard to spot a single 5 nanometer particle. Leiden physicists pulled it off by turning a 120 nm gold rod into a detector.

On November 16 a festschrift in honor of Dr Olivier Nieuwenhuyse was presented in a moving event at the Faculty of Archaeology. Professor Bleda Düring, a personal friend of Nieuwenhuyse, was one of the initiators. ‘If he had been here, he would have loved this book.’

More CO2 in the atmosphere is making food crops more calorific, less nutritious and potentially more toxic.

That a parrot can copycat sounds is nothing new. But vocal learning is not common in animals. Researcher Carel ten Cate of the Institute of Biology Leiden (IBL) of Leiden University has now discovered a duck species that can imitate sounds. ‘It started with an obscure reference about an Australian musk…

On August 27 – 31 2019, PhD candidate Maria Vasile participated in the IUAES 2019 Inter- congress in Poznan, Poland entitled "World Solidarities" and shares some of the insights from presentations she attended and found particularly relevant to the Food Citizens project.

In 2020, the organizing committee of ICEHL-21 made the decision to host the conference in 2021 as an online conference. After careful consideration, and taking the feedback of participants into account, the organizing committee has made the following practical decisions:

The Dutch asylum application centre in Ter Apel is overburdened, an issue that is currently a prominent feature in the Dutch media. In podcast De Verbranders, PhD students Neske Baerwaldt and Wiebe Ruijtenberg engage in dialogue, and use different angles to examine themes related to migration, borders…

Staff and students from the Faculty of Archaeology are just back from a newly started Field School in the inland of Portugal.

Nitrogen deposition does not only affect plant biodiversity, but also strongly affects the composition of the remainder of the food web, through the changes in plant composition. In an unprecedented analysis of population changes of butterfly and moth species, an international research team including…

Almost fifty scientists and twenty companies will be working on developing new antibiotics and alternatives for antibiotics use. NWO and the Ministry of Health, Wellbeing and Sport will together invest close to seven million euros in this research. Scientists from Leiden University and LUMC will be…

Leiden alumnus Emma Govaart (24) wanted to make an impact on society, so she took a job in the non-profit sector after graduating.

Students of the European Union Studies track of MA International Relations visited Brussels this October and met many Leiden alumni who already work there.

If you imagine in advance that something is not going to hurt, this could mean you experience less pain. This discovery was made by health psychologist Kaya Peerdeman during her PhD research on the placebo effect. PhD defence 7 February.

A tried and tested medication for treating ADHD works differently than expected in the brains of healthy individuals during rest: rather than stimulating brain activity, it suppresses it.

Leiden University Professor and world renowned Bach specialist Ton Koopman returned to the San Francisco Symphony for two weeks of concerts celebrating J.S. Bach and his legacy.

Emma de Vries, PhD researcher at LUCAS, has been awarded with a Fulbright Grant and Prins Bernhard Cultuurfonds Scholarship. From September 2015 onwards, Emma will spend a full academic year in the Unites states, to work at UCLA and Harvard on her PhD research on Neo-Epistolarity.

Students from the Advanced Master in Law and Digital Technologies completed a successful work experience programme at Privacy Company in The Hague.

Nowadays they can cause the fall of ministers, but once upon a time receipts were a new phenomenon. Associate Professor Robert Stein is to receive a grant from NIAS to map their origins.

Activities of Magda Dourado Pucci, Dick de Graaf, Henri Bok, Catalina Vicens, Patrizia Bovi, k.g. Guttman, Andrea Stultiens, and Lilo Nein

A delegation from the University of Edinburgh recently visited Leiden University to deepen their collaboration. What makes Edinburgh such an attractive partner?

On August 18, 2022, Henk Bodewitz, distinguished Indologist and emeritus professor of Sanskrit at Leiden University, passed away in his hometown of Utrecht.

As every year the Faculty of Archaeology bioarchaeology group has visited Schöningen Germany for field research.

Researchers from the Institute of Environmental Sciences (CML) identified six top priorities where environmental interventions can make the most difference. By doing so, they hope to help researchers and policymakers make the most out of the limited, available resources to protect people and the pla…

In the academic world interest in interdisciplinary research is growing. It can help to solve the big challenges of our times. But starting a research project that covers several disciplines is not always easy. This was one of the conclusions at a Young Academy Leiden (YAL) symposium. What are the c…

Seaweed, which is vital for marine life, is disappearing throughout the world at an alarming rate. Different currents and wave patterns can bring about recovery, but more research is needed. This is the conclusion of Achmad Adhitya. His PhD defence has a political edge because of his proposition and…

The EU Return Directive gives migrants residing unlawfully in the European Union the option to leave voluntarily. This is to avoid detention and forced expulsion. But the directive is too vague and can lead to unfair procedures and even human rights violations, PhD candidate Christian Mommers conclu…

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,…

The promising early results of an international study have shown that insulin-producing cells grown from stem cells can cure the disease. The new Cure One LUMC research centre aims to accelerate this breakthrough.

There is much wrong with the taxonomy of the plant genus Phyllanthus. Roderick Bouman of the Hortus botanicus Leiden has developed a new phylogeny for Phyllanthus and exposes the evolution of the plant genus. Publication in TAXON.

Carlotta Rigotti, Postdoc researcher at eLaw, and Eduard Fosch-Villaronga, Associate Professor at eLaw, delivered a lecture on AI and non-discrimination, engaging students with the Debiaser demo.

Artist Marlene Dumas gave the 48th Huizinga Lecture to a packed Pieterskerk on 6 December. She spoke about her own background, and why you can’t assume this will help you understand her work.

An international group of scientists, led by Leiden physicist Sense Jan van der Molen, has developed the first switchable molecular diode. You can turn this on and off through humidity. Vice versa, it is a humidity sensor at the nanoscale. Publication on 4 December in Nature Nanotechnology.

Until now, systematic discussions of gender, race and law have received little attention from Dutch law faculties, especially at the undergraduate teaching level. At the same time, public calls for discussion of these issues increases rapidly.

The pesticide thiacloprid turns out to be more harmful than previously thought. It can disrupt the lives of freshwater invertebrates and their communities, upsetting the balance and functioning of entire freshwater ecosystems. This was shown by ecologist Henrik Barmentlo and colleagues, their research…

For the students of our Dutch institutions, the Netherlands Embassy supported an ‘academic retreat’ at hotel Stella de Mare in Ayn Sukhna. During this two-day retreat, our students discussed with students of al-Azhar University in Cairo on various topics. It was an open exchange of ideas and feedback…

De collegereeks over het Nederlandse crisismanagementstelstel gaat vrijdag 26 mei van start. Lector crisisbeheersing bij het NIPV (Nederlands Instituut Publieke Veiligheid) Menno van Duin trapt af en geeft vast een voorproefje over het eerste college.

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…

Politicians from Forum voor Democratie (FVD) regularly retweet anti-Semitic accounts. They therefore promote players from a social media network in which anti-Semitism is commonplace. This ranges from conspiracy theories about George Soros to hate speech about Jewish people drinking children’s blood.…

Leiden Mayor Peter Heijkoop visited the Faculty of Social and Behavioural Sciences and the Faculty of Science on Monday,

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…

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…

Many articles in the media highlight the positive effects of using psychedelics, with some US states even using them for mental health treatments. However, we cannot conclude anything as of yet about the safety or efficacy of psychedelic therapy, says Michiel van Elk in an interview with National Geographic.…

After two years, it was great to be back in Brussels again. Many thanks to all alumni and students who were present during the academic discussion on the values and the future of the EU, followed by networking drinks.

Career Services of the Faculties Governance and Global Affairs, Social Sciences, and Humanities joined forces to organise the ‘Meet the Employer’ Week held from 6 – 10 December 2021!

Researchers from the Institute of Environmental Sciences of Leiden University started crowdfunding to raise 15.000 euro to build a laboratory in nature: The Living Lab. This is necessary to test the effects of chemical compounds in a natural situation.

Did you know that Arabic was for centuries the lingua franca in an area stretching from the south of Spain to the Chinese border? And that the Middle East under Muslim rule was the world’s beating heart of trade, but also of science and scholarship? Want to learn more? Then sign up for the new MOOC…

All supermassive black holes in the centres of galaxies appear to have periods when they swallow matter from their close surroundings. But that is about as far as the similarities go. That's the conclusion reached by British and Dutch astronomers from their research with ultra-sensitive radio telescopes…

On 2 December, the Municipality of Leiden will apologise for the role previous administrations played in colonialism and slavery. A further study will be carried out.