Tuberculosis stands as one of the most lethal infectious diseases worldwide. A significant challenge in combatting tuberculosis lies in the emergence of antibiotic resistance triggered by genetic alterations, commonly known as mutations. These mutations can diminish the responsiveness to antibiotics,…

Rapid developments in DNA techniques allow researchers to find out more and more about human genetics. An international group of scientists has drawn up five ethical guidelines to ensure that this DNA research is better regulated. Leiden archaeologist Marie Soressi – one of the signatories - explains…

Psychedelic drugs like magic mushrooms and LSD are embraced by some and seen as lethal by others. Cognitive psychologist Michiel van Elk delved into the world of psychedelic drugs and wrote a surprisingly sober book about them. ‘Without first-hand experience my story wouldn’t be complete.’

International researchers have, for the first time, pinpointed the moment when planets began to form around a star beyond the Sun. Using the ALMA telescope, in which the European Southern Observatory (ESO) is a partner, and the James Webb Space Telescope, they have observed the creation of the first…

During the summer, staff and students of the Faculty of Archaeology travel to all parts of the world, initiating or joining fieldwork projects. Read some of our students' stories here!

At one time, the railway from Kimberley to Kambove in Southern Africa symbolised prosperity and progress. Today, the exhausted mining towns along its route are marked by decay and pollution. Professor Jan-Bart Gewald has been awarded an NWO L grant to investigate the long-term global consequences.

To what extent does exoplanet Proxima b resemble our Earth? And is there some form of life present? Astronomers hope to find answers to these questions with the new European Extremely Large Telescope (ELT). An NWO research grant of €18 million will allow a Dutch consortium to continue building instruments…

Researchers from the LUMC and the Universities of Granada and Almería have found a gut bacterium that is associated with stronger muscles in people and mice. Their findings, published in the journal Gut, hint at the potential for new probiotics to support muscle strength and healthy ageing.

Over the past few years, citizen scientists from the Heritage Quest project have scoured the entire Veluwe and Utrechtse Heuvelrug areas for unknown archaeological heritage. One of the results of this research is that the number of known burial mounds in this area has doubled.

Last week’s sunny Lowlands festival was not just an occasion for partying and dancing. Visitors were also given a glimpse – as test volunteers – into scientific research. How do you conduct research on fear and silent communication at a festival?

Leiden researchers Arko Ghosh and Enea Ceolini analysed the usage data of hundreds of mobile phones and discovered that our body has rhythms ranging between 7 and 52 days. These cycles influence how we behave. Their research resulted in an article in npj Digital Medicine journal, a Nature Portfolio…

The COIn grants enable researchers to improve the infrastructure for their research. The four initiators of two projects explain how the grant has helped them.

Researchers from Leiden University, University of York, University of Barcelona/IQTCUB/ICREA and The Francis Crick Institute report a new class of experimental compounds that powerfully block influenza viruses. The findings offer a potential new strategy for treating flu infections and preparing for…

Leiden scientists lead COLIBRE, a groundbreaking set of cosmological simulations. By including key missing physics, cold gas and cosmic dust, they offer the most realistic picture yet of how galaxies formed and evolved since the dawn of time.

A surprising amount of life grows, crawls and flutters around Leiden University’s buildings. During the Biodiversity Challenge – from 30 April to 2 July – the campus will turn into a research site, and you’ll be the researcher. Grab your phone, take a look around and record what you see.

Astronomers who simulate galaxies do not always get the same result, even when they start from identical conditions. New research from Leiden University shows that this is not a flaw, but a consequence of how galaxies behave — and how they are modelled.

In May, the University concluded that a smaller programme of construction would be possible for the Humanities Campus. The new criteria were presented, which will have an impact on the surrounding area. During two meetings held in May and June, local residents, business owners and other stakeholders,…

The maths level of Dutch primary school children? Nothing to write home about—at least, that’s the common perception. But according to researchers Marian Hickendorff and Emilie Prast from the Institute of Education and Child Studies, that idea is simply not correct.

Lecture, Tuesday Talk

Lecture, Tuesday Talks: Science Insights

PhD defence

Marta Fiocco has been appointed as of 1 April as professor of applied mathematics, in particular medical statistics. Fiocco's appointment is at the Faculty of Science and at the Leiden University Medical Centre (LUMC). She conducts research into 'personalised medicine', tailor-made medicines for cancer…

After 45 years at Leiden University, it is time for Kees Goudswaard to retire. In his farewell lecture, he reflects on developments in his field: social security.

Alumnus Ben Smulders has worked for the European Commission for the past 33 years. ‘The discipline and depth that I experienced during my student days has helped me through various stages of my professional career.’

In the MS Cognitietour, psychologists and neuroscientists from Leiden University discuss the latest scientific knowledge with MS patients and their loved ones. This leads to insights: 'One lady told how much stress she felt from all those caregivers around her bed.'

Hanne Cuyckens and Daan Weggemans have been appointed Teaching Fellow and Member of the Leiden Teachers' Academy (LTA) from 1 September 2023.

On the Day of the Emergency Response Officer, we shine a light on the colleagues who contribute to safety across the university. Their dedication and experiences highlight the value and versatility of being a company emergency response officer – not only in the workplace, but beyond. We spoke with four…

Het college van bestuur heeft Wim Voermans benoemd tot Universiteitshoogleraar. Hij gaat zich richten op duurzaam institutioneel vertrouwen.

Jasper Knoester is the dean of the Faculty of Science. How is he doing, what exactly does he do and what does his day look like? In each newsletter, Jasper gives an insight into his life.

How can we as a society prevent suicide? According to Professor of Suicide Prevention Renske Gilissen, a better understanding and targeted action could help save lives.

The theme of the Heritage Open Days Leiden on 10 and 11 September is sustainability. At four University locations guides will talk about the history of the buildings and how they have been renovated. And there is a first: tours in sign language.

Not all students spend the holidays with family and friends. The Leiden University Winter Weeks gives these students the opportunity to take part in a range of fun and free activities. The student well-being team worked again with student organisations from Leiden and The Hague to organise this year’s…

Fradinta Laksmita came to Leiden in 2023 for the Advanced Master Law & Finance during her sabbatical. She has since returned to Jakarta and now works as an associate lawyer at Dentons. ‘My best memory was actually going to class.’

On January 1st Jasper Knoester started as our new dean. How is he finding it? What kinds of things is he doing and what does his day look like? In each newsletter, Jasper gives a peek into his life as dean.

The 10th edition of the World Congress of African Linguists (WOCAL), hosted by Leiden University, will be held online from 7 – 12 June. Leiden University Centre for Linguistics (LUCL) researchers give us an insight into how important and special this event actually is.

Starting with the ‘why’, putting herself in her students’ shoes and providing structure. These are three ways in which environmental scientist Ranran Wang tries to make her course as interesting and manageable as possible. With success: she has been nominated for Science Teacher of the Year 2022.

Charlotte Vrendenbarg is Assistant Professor intellectual property rights (IP) at Leiden University. She was recently sworn in as deputy judge at the District Court of The Hague, exactly 30 years after her mother was installed as a judge in Breda. ‘Following in her footsteps was not a goal in itself,…

Working as a diplomat for the Ministry of Foreign Affairs: for many students it would be their dream. Alumnus Tom Groot Haar is busy making it a reality. 'My career seems like a preconceived plan, but it wasn't.'

An impressive 60 alumni recently came to the Dutch Embassy residence in Japan to meet, network, see friends and practise their languages.

By far the majority of users of child sexual abuse networks (or child porn forums as they are sometimes called) on the dark web do not actively communicate there but download illegal material, therefore committing a criminal offence. But they often stay under the police and judiciary’s radar. PhD candidate…

Connecting worlds, enhancing research and teaching, and providing innovative solutions to complex social issues: that is the idea behind interdisciplinary research. In that respect, a huge amount happened at Leiden University in 2023.

If European countries rely solely on technological advances, they won't be able to limit global heating to 1.5 degrees. Households will also need to change their lifestyles. This 'inconvenient truth' is the result of calculations done by industrial ecologist Stephanie Cap. ‘It's not a popular message,…

What looked like an ordinary coot’s nest turned out to be a five-star location with a remarkable backstory. Beneath a jetty on the Rokin in Amsterdam, biologist Auke-Florian Hiemstra discovered a true time capsule — complete with face masks from the COVID era and a Mars wrapper dating back to the 1994…

Armed with sunglasses, a thick layer of sunscreen and several bottles of water, over 3,300 students have arrived in Leiden for their introduction week. The start of the 55th EL CID happened to be on the hottest day of the year.

The Schoof cabinet has presented its budget. As expected, higher education is facing severe cuts. In the coming period, the Executive Board will regularly look at the consequences of what it deems an irresponsible policy.

For over 25 years, Christiaan Pen has been a valuable member of the faculty, both as an instrument maker and emergency responder. What is it like to support your colleagues during crises? Five questions for Christiaan.

Following the announcement of revised financial projections at the start of the academic year, the Faculty Board was keen to engage in dialogue with the wider faculty. Through information sessions held at all institutes, at the Faculty Office and in The Hague, we met with many of you to hear your questions…

'Frans Rodenburg is an excellent teacher who is able to convey difficult information,' say his students. In his statistics classes, he wants to make students enthusiastic for his beloved subject. 'Most students are convinced that statistics is not for them. I am here to convince them otherwise.' Rodenburg…

Terrorism expert Bart Schuurman has been appointed professor. As a researcher and lecturer at ISGA, he has witnessed the terrorist threat evolve and broaden. 'How can we explain these shifts and protect our society against them? That is what I want to focus on more,' he says.