The main goal of the THEOR CHEM group, headed by Prof. Geert-Jan Kroes, is to characterize, and to accurately predict the outcome of chemical reactions at gas-solid and liquid-solid interfaces. Here the solid surface is typically a metal or an ice surface. These goals are important to many areas in…

duurzaamheidsthema's onderzoek

Lecture

This article aims to contribute to the debate about citizen involvement in medical and social issues by studying co-production initiatives in The Hague.

This research investigates the changing landscape and land use in two case studies of the coastal villages of St. Kitts and the Kalinago Territory of Dominica. By integrating human and ecological aspects of agrarian landscapes, this research analyzes how land degradation or land change impacts cultural…

This thesis reports on the influence of induction programs on beginning teachers’ well-being and professional development, and the essential characteristics of an induction program. These topics were explored by means of an interview study and large scale survey study.

The opening of the Academic Year 2017-2018 took place on Monday 4 September 2017 in Pieterskerk church.

Our institute contributes to multiple curricula. 

Occupational health in the Emergency Department

New technology offers many new possibilities for research, such as on dementia. ‘Organ-on-a-chip’ is a new technology in which small bits of organ are grown out of stem cells on a small plastic plate. A small piece of blood vessel, heart or nerve offers many new possibilities for research, such as…

Leiden University's Citizen Science Lab supports and organizes initiatives where anyone can get started with scientific data and research. This is how we enrich research with insights from the community, make science accessible to all, and tackle important local issues together.

Netwerk en projecten duurzaamheid verduurzaming green office en green team

Lets hit the water! Our students joined us on Saturday 30 August 2025 for a Stand Up Paddleboarding (SUP) and canal clean-up session on Leiden’s canals with Plastic Soup Surfer Merijn Tinga.

In this project, the hypothesis that language contact crucially impacts the development of spatial grammar and phonology is investigated.

This dissertation provides a thorough review of the words belonging to the oldest layer of Germanic loanwords in Proto-Slavic and answers the question of how these words were adapted to the Proto-Slavic accentual system.

The Covid pandemic has had a considerable impact on academics’ work and well-being. They have had much less time to spend on their research. The Young Academy and the Dutch Network of Women Professors have conducted research into how the situation has been for academics. The two organisations have recommendations…

Apprentices in the art of debate: that is the best description of the group of secondary-school pupils from Pre-University College who battled it out with each other and European parliamentary candidates on 29 March. The fitting location was Huis van Europa in The Hague.

Product packaging is essential. It prolongs shelf-live and highly influences purchasing decisions. However, it’s also a big source of waste, especially single-use plastic. Have you ever felt conflicted choosing a product due to the material it’s packaged in? Or opted for a different product due to its…

Western thought has often dismissed shadows as fictional, but what if fictions reveal original truths?

Diacylglycerol lipases (DAGLα and DAGLβ) convert diacylglycerol to the endocannabinoid 2-arachidonoylglycerol. Our understanding of DAGL function has been hindered by a lack of chemical probes that can perturb these enzymes in vivo.

Leiden University and four other parties have signed a declaration in which they agree to improve the well-being of students in Leiden. They signed this Declaration on Student Well-Being on 5 April at the Leidsch Besturendiner, a dinner for student associations, universities, local government and bu…

How do public organizations use strategic regulatory communication in regulatory governance?

This dissertation concerns the role of analogy in Kant’s “Critique of the Teleological Power of Judgment”, especially the role of analogy for the formation of the concept of a natural end (Naturzweck). A ‘natural end’ is a ‘regulative concept’ of the reflective power of judgment, that is, a heuristic…

It’s Not Easy Being Green – but we’re here to help! Listen via the link in our bio! Do you want to live more sustainably but have no idea where to start? Are you interested in making the world greener and do you want to get to the bottom of hot topics? Or are you sceptical about climate change and…

Adoptees in the Netherlands generally do not use more medication than their non-adopted peers.

Learning from nature and utilizing microbial biodiversity to identify and characterize enzymes for degradation and upcycling of plastics and other polymeric materials.

LACDR is committed to incorporating sustainability into our education and research. By developing environmentally responsible innovations in drug research, promoting the awareness of the importance of sustainability with LACDR staff and students, and implementing sustainable daily practices within our…

The earth has more than 7 billion inhabitants, all of whom leave behind traces of pollution. However, not all forms of pollution have the same harmful effect. Leiden scientists help determine where we should put our priorities.

How to keep 80 students with different backgrounds motivated for 3 hours? Stefano Cucurachi knows how! By incorporating current developments, lively discussions and even some improvisation theatre, this assistant professor managed to become Teacher of the Year 2018. ‘You have to find ways of gaining…

The main aim of this thesis was to unravel the signaling and regulatory networks that drive tumor cell migration during breast cancer metastasis.

The research at the Living lab attracts a great deal of press attention. Please find below a small selection of the many news reports that have been published. Also take a look at the Zembla programme about the Living Lab.

Agrobacterium tumefaciens, a gram-negative plant pathogen belonging to the family Rhizobiaceae, is the causative agent of crown gall disease, which can affect many plant species including agronomically important ones.

Prostate cancer (PCa) is one of the most prevalent cancer in males.

Subproject of

Living labs make it possible for citizens to participate in research for sustainable development of their environment. This way citizens, together with scientists and stakeholders, create local conditions for food production, healthy environment, and biodiversity.

Engineering an efficient microbial enzymatic polyethylene degradation pathway via an innovative combination of biochemistry and computational biology tools for enzyme discovery and characterization.

Promotor: Prof.dr. E. Smets, Dr. M. Stech

The Honours Academy offers extra opportunities for students and teachers at Leiden University.

Imitation is, perhaps more than ever, constitutive of human originality.

We investigate the physics and design of mechanical metamaterial, intricately sculpted materials with properties set by their architecture.

In human cells, a meter-long DNA is condensed inside a micrometer-sized cell nucleus. Simultaneously, the genetic code must remain accessible for its replication and transcription to functional proteins.

The bacterial cell wall is a nearly universal structure that offers protection and gives the cell its shape. However, environmental stressors, such as cell wall-targeting antibiotics and hyperosmotic conditions, can induce bacteria to shift to a wall-deficient state. It is unknown whether the lack of…

My PhD thesis investigates the ecological significance of resistance against drought-induced air bubble formation inside the water conduits of plants (embolism), and the plasticity and functional aspects of stem anatomical traits in woody and herbaceous species.