At the start of the year a lot of journals publish lists of their most cited papers of the previous year. Three papers published by Leiden archaeologists were ranked in the top 10 of the Journal of Archaeological Science: reports.

Organisation

You're about to graduate. That means there’s a lot to be arranged. The university expects you to take certain steps, as does your faculty and/or institute. Your faculty has various regulations and procedures in place that you need to follow carefully when arranging your graduation.

Scientists' computers are now full of complicated 3D models, but no standard has yet been developed for exchanging the data. A new database should change this. External PhD student Liselore Tissen is receiving a grant to contribute to this on behalf of Leiden University (and TU Delft). ‘It will be great…

At the symposium ‘Diversity and Inclusion in the Police: from Aspiration to Reality’, the central question was how organisations can truly embody diversity and inclusion. The high level of interest (it was fully booked in no time) demonstrates that the topic is pressing—both in academia and in pract…

On Friday 29 August, the Wijnhaven was filled with a special mix of first-year students just beginning their academic journey, and students who, after 1,089 days of intensive study, were awarded their Bachelor’s degree in Security Studies. In two festive sessions, a total of 223 students received their…

CML grants three Stans Awards each year, known as the best student thesis, best PhD paper and best outreach from the past year. The CML staff nominated students and colleagues and this year’s jury Prof.dr.ing. Jan Willem Erisman and Prof.dr.ir Willie Peijnenburg made the final decision.

More severe droughts that will also last longer: this will primarily be a problem for irrigated croplands, as discovered by environmental scientist Qi Chen. Mixed forests with a variety of plant species will be the least vulnerable. Chen compared the effects of drought on different ecosystems across…

If Europeans eat less meat and dairy, this will have major consequences for farmers. New research shows that many barns and machines could lose their value. With the right policies, these losses can be limited. This is shown by research from Leiden, Oxford and Vienna.

Is polder rice a feasible circular alternative for cows on peatland? A pilot experiment started this week. On May 22nd, researchers from Leiden University and Wageningen University & Research (WUR) planted roughly 3,000 rice plants on the Polderlab near Leiden. The researchers want to test rice as a…

Although there is considerable evidence that nature in the city is beneficial to both people and animals, we still do not have an overall picture of those benefits. To rectify that, a Leiden PhD candidate and a student – armed with a cargo bike – are using The Hague as a life-size laboratory.

Research

Research

‘The climate crisis is the greatest threat we face,’ says Leiden University environmental scientist Paul Behrens. ‘And yet, there is hope. In the near future, I think we will wonder why we didn’t make these changes earlier.’

Photographing fluorescent flowers, searching for frogs and shooting tropical cucumbers out of trees: this is only a small part of the course Tropical Biodiversity and Field Methods. For this class, master’s students biology traveled to Malaysian Borneo for two weeks to gain experience in fieldwork.…

Over the past year, historian Fenna IJtsma delved into 'four centuries of historical greenery'. As part of the Heritage Deal, with input from biologists at Naturalis and others, she looked for inspiration and examples from the past to contribute to a future climate-proof city centre.

Sterre ter Haar has won the Rachel Carson Graduation Prize for her thesis on how rising levels of CO₂ affect the nutrient content of plants. For the Industrial Ecology student, the award is a crowning achievement after a difficult period of recovering from long COVID.

Playgrounds often fail to accommodate children with autism, according to researchers Carolien Rieffe and colleagues. They have published an essay offering practical advice on how to make all children feel safe and welcome for Autism Week (Dutch) and World Autism Autism Awareness/ Acceptance Day on 2…

You may already have seen them in the larger restaurants in the teaching buildings: simple yet tasty hagelslag or cheese sandwiches. Students asked and the University Services Department (UFB) has delivered with its new Pure Basic line. Now there is a lunch for every budget.

Galaxies in the early universe contain more dust and hidden star formation than previously thought. That's what Ivana van Leeuwen concludes in her PhD research, where she combines data from various telescopes to create a more complete picture.

By means of a presentation, a panel discussion, and activities in the fresh air, the event themed ‘Environmental Humanities’, organised by the Honours College Humanities, managed to unite both people and disciplines. ‘There is a gap between humanities and sciences, but they are more alike than you might…

In collaboration with the Biate community of Meghalaya (Noth East India), I am co-creating the first-ever bilingual picture book in the Biate language. The project began with Biate schoolchildren collecting stories about their environment — stories shared by parents, neighbours, and village elders.

"Climate citizenship” explores how adapting environments to climate change can change the way people interact with each other and with government. It focuses on nature-based or 'green' climate infrastructure projects that make use of natural entities or dynamics. With an ERC grant, anthropologist Andrew…

Fantastic plants, dizzying patterns and pulsating sounds: researchers from Leiden are going to study the effects of a simulated psychedelic trip on the mind and body at Lowlands Festival. Why might this be interesting for therapies?

Imagine scanning lion dung or a mouse dropping and instantly knowing exactly what and how much the animal has eaten. Thanks to new DNA techniques, this is becoming increasingly feasible. PhD student Kevin Groen tested how effective these techniques are at unraveling the diets of wild animals.

After hard work in the lab, Chemist Tirong Guo has developed a group of materials that provide a stable and efficient foundation for artificial photosynthesis. Will this enable the large-scale production of hydrogen and other useful compounds in the most sustainable way possible? Guo will defend her…

LUC students and staff came together this past semester to transform a local urban garden into a hands-on space for learning, experimentation, and community building.

Approval and application

AD(H)D stands for Attention Deficit(-Hyperactivity) Disorder, which is a common disorder that can impact your learning at Leiden University.

The moving boxes are unpacked, the floors are gleaming, and the workshop rooms look fresh and inviting. On Monday 16 June, the renovated Lorentz Center will be officially reopened by dean Jasper Knoester and rector Hester Bijl. Director Roeland Merks: ‘There’s a new energy running through our centre…

Astronomers have found complex organic ice outside the Milky Way for the first time. The discovery shows that the building blocks of life could arise early in the universe - and under a variety of conditions, said Leiden astronomer Will Rocha.

The Hortus Talks is a podcast series as well as a botanical college tour, recorded in the greenhouse in the middle of the Hortus Amsterdam. The theme of the podcast was plant migration. In this context Anastasia explained the importance of understanding how hunter-gatherers impacted past landscapes…

The carnivore diet, a fact or just a trend?

‘Space Antenna LISA will open an unprecedented window on the Universe,’ says astronomer Elena Maria Rossi. The mission will be the first one to detect Gravitational Waves from space. These can tell us more about the beginning of our Universe and the formation of black holes. With an NWO grant of twelve…

Katharina Natter of the Institute of Political Science has been awarded the 2025 IMR Book Review Award for her book on migration politics in Morocco and Tunisia.