On 8 March, International Women’s Day, equal opportunities for women worldwide, empowerment, and gender equality take centre stage. For years, the role of women in the past has been nearly invisible. Four archaeologists reflect on this inequality of focus, from hunter-gatherers in the palaeolithic to…

When do we define a piece of nature in the city as a park? And when is something a tree or shrub? It may seem obvious, but in scientific literature the definitions vary quite a bit. That makes comparisons difficult. Environmental scientist Joeri Morpurgo looked at the differences and designed a general…

With a self-converted red camper van, biologists and twin brothers Kevin and Marvin Groen go on a nature adventure in Eastern Europe. Together, they search for wild animals, beautiful nature and places to sport. From a long search for a bear in the Slovakian wilderness to the discovery that pelicans…

Martina Vijver has been nominated as Teacher of the Year of the Faculty of Science. She gets this nomination for the course Ecotoxicology she taught in 2022. The 52 students who took the course were hugely enthusiastic, as can be read in their positive reviews. What is so great about this course then?…

A lot of municipalities work with a points system to encourage construction projects to take biodiversity and creating green areas into account. But this way of working also benefits local neighbourhoods and residents, master's student Marije Sesink discovered. She based her study on The Hague.

Netherlands and China can learn from each other to handle household and livestock wastewater more sensibly. In the FOREWARD project, scientists from Leiden, Wageningen, and China are working together with local partners on feasible solutions that advance the environment, health, and economy.

Neanderthals were able to outwit straight-tusked elephants, the largest land mammals of the past few million years. Leiden professor Wil Roebroeks has published an article about this together with his German colleague Sabine Gaudzinski-Windheuser in the Science Advances journal.

Cotton is the most widely used natural fibre for clothes. But how polluting are our jeans and shirts actually? Environmental scientist Laura Scherer coordinated an international research project on the impacts of cotton. ‘The purchases of consumers in Europe can contribute to water scarcity in China…

To facilitate the search for new antibiotics. That is the aim of Gilles van Wezel, professor molecular biotechnology at the Institute of Biology Leiden (IBL). He wants to do this by looking at similarities in the DNA of antibiotic-producing bacteria. Van Wezel has been awarded an ERC Advanced grant…

Paco Barona Gomez is the newest associate professor at the Institute of Biology Leiden (IBL). The Mexican researcher is fascinated by the evolution of natural products: compounds made by microbes, but also plants and animals. ‘It’s like we investigate chemical dark matter.’

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.

Over 30 ambassadors strengthened their ties with researchers and university leaders in a recent visit to Leiden University. Cross-border collaboration (both literal and figurative) was the theme of presentations and a tour of the Hortus botanicus.

A huge shiny aluminium object stands in the middle of the Polderlab in Oud Ade. Are the researchers trying to make contact with extraterrestrial life? Certainly not; they are using the ’Moon landers’ to measure whether innovative forms of agriculture reduce greenhouse gas emissions. Fleur van Duin works…

Light, open and green: a description that fits the new, renovated location of the Faculty of Humanities. The official opening of the Herta Mohr Building took place on 8 October, and it has many remarkable features: for example, recycled ‘mushroom columns’, a pedestrian bridge to the University Library…

Leiden University is taking a major step forward in the energy transition with the expansion of the thermal energy storage (TES) in the Gorlaeus Building. This expansion is needed to be able to heat and cool all the new and renovated buildings on the Campus Square of the Faculty of Science sustainably.…

Leiden PhD candidate Mona Shahab climbed Mount Everest two years ago to raise money for the education of disadvantaged children in Egypt. She made it to the top and posed there with the University flag. She recently presented the flag to Rector Carel Stolker.

Eight university vegetable patches will soon join the display at the Hortus botanicus. The sun shone down on almost 40 enthusiastic students and staff as they started work on the new Community Garden there earlier this month.

Four promising young researchers will be able to conduct two years of research at a university abroad thanks to a Rubicon grant from the Dutch Research Council (NWO). The Leiden laureates are Renske Janssen, Girija Josh, Anne van der Meij and Yana van der Weegen.

Alex West’s dissertation, "Bujangga Manik or, Java in the Fifteenth Century: An Edition and Study of Oxford, Bodleian Library, MS jav. b. 3. (R)" (Leiden, 2021), has been selected for one of the five prestigious Praemium Erasmianum Dissertation Awards 2022.

The Vrouw Vennepolder near Oud Ade has been transformed into the Polderlab. Scientists and students from Leiden University, together with farmers and citizens, investigate how to manage peatland in a sustainable and profitable manner. A great opportunity for students to experience how scientific knowledge…

Soil ecologists Emilia Hannula (Leiden) and Elly Morriën (UvA) received the Golden Medal of Teylers Tweede Genootschap on 5 November. They received the prize for their submission to a competition on sustainable soil management.

At the end of the 7th century something curious occurs in Northwestern Europe. Suddenly, people start burying the dead next to their dwellings instead of in communal cemeteries. Professor Frans Theuws recently published a book on this phenomenon. ‘We wanted to know if the study of these farmyard burials…

On Tuesday 6 September, the faculty year 2022-2023 got off to a great start with Leiden Law Op 1, our yearly talkshow live from the Kamerlingh Onnes Gebouw. Together with the Faculty Board, academic staff and students, we looked ahead to the upcoming academic year.

From sponsored runs to festivals and from open days to concerts: Leiden University hosts lots of events each year. We are highlighting six of them for 2023.

How do you count the nanoplastics in your body? Leiden researchers published a method in Nature Protocols today that should make this easier. Important for both environmental and medicine research.

Facility

Biotechnological developments are moving fast. From genetically modified plant varieties we are now moving to cultured meat. These developments require moral interpretation - and they get it in the form of art. Lotte Pet wrote a dissertation about it.

Are you looking for some listening material for the upcoming long weekend? Staff members and alumni of the Faculty of Humanities have been creating various podcasts over the last few months. A selection is shown here:

Organisation

PhD defence

PhD defence

PhD defence

Hans van den Berg, CEO of Tata Steel NL, is in the eye of the storm. He continues to believe in connection, debate and knowledge that will make green steel possible.

Arts and leisure, Arts and leisure

Arts and leisure, Arts and leisure

On 21 January, the Institute of Environmental Sciences (CML) has released two reports on circular economy and urban mining in the Netherlands. In them, together with Statistics Netherlands, they take stock of part of the Dutch ‘urban mine’: how much raw material can we reuse from the electricity grid,…

The Dutch Research Council (NWO) has awarded Vidi grants to Leiden researchers.

Each year, CML gives out three Stans Awards. The Institute's staff could nominate students and colleagues for the prices of best student thesis, best PhD paper and best outreach from the past year. Jury members Jan Willem Erisman and Nicole de Voogd made the final decision.

Would you like to take concrete steps toward a sustainable university or do you have a broad interest in sustainability? Over 200 staff members have already joined the Leiden University Sustainability Network. And there is always room for more – even if you’re no expert on sustainability, says project…

Rain or shine: in the course ‘The Ecology Project’ students of Leiden University College visit the nature of The Hague each week.

For her bachelor’s thesis, Molecular Science and Technology student Madouc Bergers synthesized her own molecule that can inhibit the breakdown of sugars. Although most students do not even manage to make one building block, Madouc made three. Partly because of this, she has been nominated for the Science…

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,…

Within the same species of butterfly many different wing patterns can occur. How is this possible? According to researchers Ben Wielstra and Emma Berdan, of the Institute of Biology Leiden (IBL), the answer lies within supergenes. A supergene is a part of a chromosome that contains many strongly linked…

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…

Leiden is European City of Science in 2022 and this will be celebrated under the name Leiden2022. During Leiden2022, various activities will be organised, such as lectures, workshops, excursions and exhibitions. On the occasion of Leiden2022, Postbus 71 will be opened: the place to go if you have any…

Inviting members of the public to help monitor wildlife, photograph plants or conduct samplings. These are some of the many examples of Citizen Science. It is increasingly recognized as effective and impactful for collecting data, but also for engaging the public in scientific research. In Nature reviews…

Leiden biologists have found a mutation in flour beetles that allows them to speed up their development. The study has been published in Nature Ecology and Evolution.

For thousands of years, beavers had a big influence on the Dutch ecosystem and the people that lived there. This is the conclusion of research by archaeologist Nathalie Brusgaard.

For ten months, PhD student Sanne Rotmeijer worked on the editorial boards of various news media on Curaçao and Sint Maarten. She also tracked how news goes around on the streets and circulates on social media. The aim? To find out how stories became 'the news'.