Scientists have discovered that starlings and parrots can imitate the complex sounds of Star Wars droid R2-D2 remarkably well. Their study reveals how the structure of a bird’s vocal organ determines its vocal abilities – and how citizen science helps uncover it.

On paper it is recycled, but in reality enormous quantities of plastic waste from the Netherlands end up in Asian seas. Researchers from the Leiden Institute of Environmental Sciences charted the fate of plastic food packaging waste from the Netherlands. They published their results on July 8 in the…

Students at Leiden University believe that their degree programmes should focus more on sustainability. These are the findings of a survey of more than 550 students by Leiden University Green Office.

Hoe kan het dat universele mensenrechten wereldwijd niet hetzelfde in de praktijk worden gebracht?

Since September, Jelle Oonk has been the chair of the Science Faculty Council. Jelle is a third-year student, combining Physics and Astronomy studies with this responsible role. Time to get to know him better. Five questions for the new chair.

Each year a staggering 18 billion chickens, turkeys, pigs, sheep, goats, and cows either die or are killed without making it onto someone's plate. Environmental scientists Juliane Klaura, Laura Scherer, and Gerard Breeman were the first to calculate this number on a global scale. 'Reducing these numbers…

How can Europe lead the way in vaccine development that is fast and for all? To answer this pressing question, Professor of Vaccinology Meta Roestenberg is holding a panel session on 14 July at the EuroScience Open Forum in Leiden.

The shock wave triggered by one of the five galaxies making up the iconic Stephan’s Quintet appears to be less disruptive than previously thought, with the shock likely being cushioned by dust particles in the surrounding gas. This is according to the analysis of the first scientific observations of…

How wonderful would it be to use art, technology and science in Ukraine's recovery? Young Ukrainians currently residing in Poland get guidance to develop creative programmes and activities that can later be implemented. Leiden astronomers Pedro Russo and Kateryna Frantseva cooperate in the project.

The 289 students who recently moved into the tower on Kolffpad at the Leiden Bio Science Park are sitting pretty. A self-contained unit in the middle of the campus yet surrounded by green, with a launderette, games room and study area on the ground floor, and, coming soon, a branch of Coffee Star.

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.

Quantum Rules lab van Leiden Universiteit biedt proefjes en experimenten voor middelbare scholieren om te leren over kwantum natuurkunde. Henk Buisman vertelt over het 5 jarige jubileum.

Not all gay and lesbian students feel equally safe at their sports clubs. ‘Homo’ is used almost unthinkingly as a term of abuse and players often face homophobic comments. What can sports clubs and teams do to make sure everyone feels safe when playing sports?

How can we make our cities greener and more people-friendly? Two Campus The Hague projects have secured a grant from the Municipality of The Hague. The researchers and students from both projects are working with city residents to find sustainable solutions to local issues.

Medewerkers van de Universiteit Leiden trappen maandag 10 maart de estafettestaking af van de Nederlandse universiteiten tegen de kabinetsbezuinigingen.

The Sustainability Monitor 2023 shows that Leiden University is taking its sustainability efforts seriously.

Some thirty Leiden students balanced on SUP boards for the Supping for Sustainability Lustrum activity. Together with alumnus Merijn Tinga, better known as the Plastic Soup Surfer, they paddled their boards through the Leiden canals and waterways, fishing plastic waste out of the water.

Research into depression in children, Leiden alumni in the Dutch House of Representatives and an exceptional achievement by one of our students: what do this topics have in common? They are among our most read stories of 2021.

Optimised antibiotic combinations can combat bacteria more effectively while also slowing the development of resistance. Scientists from five European countries are joining forces to identify such combinations and provide tools for others to do the same. The project is led by Professor Coen van Hasselt…

Amorphophallus decus-silvae, or the ‘penis plant’ as it is known, has just flowered at the Hortus botanicus. It flowered for two days, and then the pollen, which the male flowers produced was collected. As far as the plant experts at the Hortus can tell, this was just the third time that this species…

Micro- and nanoplastics cause stress to crops such as lettuce and carrots, PhD candidate Laura Julia Zantis found. This can lead to reduced growth and a lower nutritional value. Biodegradable plastics have this effect too, likely because of chemicals they release during degradation.

Can a robot help prepare cancer medication in a hospital pharmacy? That’s what hospital pharmacist Tjerk Geersing investigated in his PhD research. He compared manual and automated preparations in terms of quality, efficiency, and safety. He graduated on 19 March.

Planets existing in other solar systems contain invaluable information about the origin of planets and life. PhD candidate Yapeng Zhang has studied their atmospheres by looking at their smallest parts: isotopes. With her research she hopes to discover what makes our own solar system unique.

Hoping to learn something about the human brain, Leiden researchers are creating a setup to shoot single photons, particles of light, into someone’s eye. ‘The eye is a passageway to the brain.’

‘Critical thinking’ is an expression all academics have heard of: it’s the first learning objective in the Leiden Vision on Teaching and Learning. It’s both a historical topic with roots that reach back a long way and a topical problem too. The question on everyone’s lips is whether critical thinking…

How is it that the internet works so well, with billions of users sending millions of gigabytes all together every day? That's because the foundation of the internet is solidly set up. Yet sometimes there are problems on the internet. For example, when certain systems misbehave and disrupt the routing…

Every year on or around International Women’s Day on 8 March, Leiden University holds its Annie Romein-Verschoor Lecture. This year’s lecture will be given by Sylvana Simons, MP and leader and parliamentary chair of the BIJ1 party. What does International Women’s Day mean to her and which challenges…

Do you recall all those drugs that were hastily proposed as potential treatments for COVID-19? In the event of a future pandemic, the goal is to offer an effective treatment more quickly and efficiently. To achieve this, a team led by Coen van Hasselt is developing a platform that can speed up the process…

Portraits that gaze at you and have moving stories to tell: HEAR ME NOW says what usually remains unsaid.

‘Rudy van Vliet is always willing to go that extra mile to help us,’ is what students say about him. The lecturer in the Computer Science bachelor’s programme not only teaches his regular courses but also offers additional classes to prepare students for programming competitions. His dedication to students…

Martijn Manson became programme director for the Master’s in Pharmacy this month. He is a pharmacist as well as a lecturer and researcher at the LACDR (Leiden Academic Centre for Drug Research). ‘LUMC and LACDR share the responsibility for training the pharmacists of the future.’

Sustainability researchers can play an important role in the energy transition. But what if their partners are not (yet) sustainable and science itself has adverse effects? This is the subject of an online talk by researcher Thomas Franssen on 16 December with a discussion afterwards. ‘Clean energy…

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,…

A time-lapse of the universe in more detail than ever before: that’s the aim of the NSF–DOE Vera C. Rubin Observatory in Chile, which will unveil its first images of the night sky on 23 June. Researchers at Leiden Observatory have played a major role in making it all possible.

What if AI doesn’t just support engineers, but actually works alongside them? A large consortium, including Leiden University, gets 3.7 million euros. They will explore novel synergies between engineers and AI, in industrial engineering design areas such as automotive engineering.

‘Wadden Sea Sounds’ is the name of a new project launched by the Waddenvereniging in collaboration with researchers from Leiden University and the University of Groningen. The aim is to find out how underwater noise affects marine life in the Wadden Sea.

During a meeting at the University on 10 November, staff spontaneously removed a painting by artist Rein Dool from the wall in one of the meeting rooms in the Academy Building, reversed it and placed it on the floor. A tongue-in-cheek action with a serious undertone. This has led to a lot of commotion…

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

Leiden University will not enter into any new research partnerships with companies in the fossil fuel industry that are not intensively and demonstrably committed to achieving the goals of the Paris Agreement. Current projects can, however, be completed.

Master’s students in Industrial Ecology and Governance of Sustainability have helped answer organisations’ questions about sustainability

Organisation

In recent months, the university has been running the 'Smoke-free university' campaign because of the large number of cigarette waste on and around the faculties. As part of this campaign, gatherings were held in June, September and October to draw extra attention to this waste problem.

Life returned to something resembling normal after Covid but other crises soon took its place. These great challenges are also being felt at the University and our researchers are working on solutions. The nitrogen crisis, problems with young people’s services and an increasingly urgent climate crisis:…

Hans Slabbekoorn is specialised in animal sounds. On 1 July, he was appointed professor of Acoustic ecology and behaviour. A great honour, according to the new professor. ‘This job never gets boring, whether I am investigating the urban jungle or marine noise.’

Do you know a children's book fanatic? According to the Griffel-jury, 'Rekenen voor je Leven' (Calculating for your life) by Science Communication Professor Ionica Smeets is highly recommended. The book was awarded a silver ‘Griffel’, one of the highest awards for Dutch children’s literature. And that…

For her research into migration policy under different political regimes, Katharina Natter has been awarded the Gratama Science Prize for young, talented researchers.

The energy transition is already a huge challenge for society, but sustainable use of resources is even more complicated. Yet it is at least as urgent. Ester van der Voet has been working on it for decades, for example within the United Nations. Since February, she is a professor at the Centre for Environmental…

On 26 November 1940 Professor Cleveringa held his courageous speech protesting against the dismissal of his Jewish colleague, Professor Meijers. Cleveringa was arrested and the university was closed. Every year the university honours Cleveringa with a chair and meetings throughout the world.

Various Leiden researchers have been awarded a European grant to explore the commercial or societal potential of previous research.