Research on papyri has provided new insights into the history of the origins of Islam. Petra Sijpesteijns’s book,'Shaping a Muslim State', is based on these ancient Arabic letters and documents. Her new research on a Viennese collection of untranslated papyri is expected to produce more discoveries.

The Huizinga Institute research network “Archives of Power/The Power of Archives” will offer an interdisciplinary summer school on the various and complex origin stories of archives. The summer school will take place at the University of Amsterdam from 18 to 20 June 2024.

Since the emergence of humankind people have maintained social contacts and traveled widely, establishing interaction networks in which goods are traded and ideas are transmitted, increasingly on a global scale.

Promotor: J.A. Bouwstra Co-promotor: A. El Ghalbzouri

In this study, Tessa Dool and Thijs Bosker estimate the microplastic uptake of two odontocetes in the Mediterranean Sea and the Norteast Atlantic.

Man-made sounds in and around the oceans stress marine life and have an impact on marine species and ecosystems by changing the underwater acoustic climate. Hans Slabbekoorn from the Institute of Biology Leiden pleads for technical solutions to mitigate problems of noise pollution. Science review paper…

The Leiden Hortus Botanicus is the oldest botanical garden in the Netherlands. Although perfect for a ramble, it is much more than an open air museum. PhD students carry out their research here and the Hortus makes a serious contribution to biodiversity through the exchange of rare seeds with other…

On 3 December 2019, Hanna Bosdriesz defended her thesis 'Furthering the fight against impunity in Latin America: the contributions of the Inter-American Court of Human Rights to domestic accountability processes'. The doctoral research was supervised by Prof. L.J. van den Herik and Prof. M.A.H. van…

With 8.9 million euros from the Danish National Research Foundation, Aarhus University and Leiden Observatory will establish the Center for Interstellar Catalysis. The centre is led by Aarhus professor Liv Hornekær and aims to find out how and when the building blocks of life formed in the Universe.…

Every year around 8 February, Leiden University, the oldest university in the Netherlands, is celebrating its birthday. Why does the King still receive a telegram on the day of the Dies Natalis? 4 questions on the origins of Leiden University and its traditions for celebrating its foundation day.

Seagrass is a marine flowering plant with special adaptations to coastal and marine environments, playing a crucial role in providing a wide range of ecosystem services.

The Western Mediterranean is a key region to understand human dispersal events within and out of the African continent as well as for the eventual replacement of Neanderthals by anatomically modern humans during the Pleistocene. Central to any conclusive interpretation of archaeological and palaeoclimatic…

Aetiologies seem to gratify the human desire to understand the origin of a phenomenon. However, as this book demonstrates, aetiologies do not exclusively explore origins.

Last week Esther Kentin participated in the Second Meeting of the Ad Hoc Open-Ended Expert Group on Marine Litter and Microplastics organized by UN Environment in Geneva.

Holtz defended her dissertation ‘Collective human rights as an (onto)logical solution to climate change: reconceptualizing, applying and proceduralizing an overlooked category of human rights’ on 16 October 2025. The doctoral research was supervised by Carsten Stahn and Daniëlla Dam-de Jong.

Our in-house human skin equivalents contain all stratum corneum (SC) barrier lipid classes, but have a reduced level of free fatty acids (FAs), of which a part is mono-unsaturated. These differences lead to an altered SC lipid organization and thereby a reduced barrier function compared to human skin.…

uman skin equivalents (HSEs) are in vitro 3D-skin models that mimic many aspects of the native human skin (NHS) and can be a valuable tool.

The advanced insights obtained for the CNS PBPK model development are currently used to develop advanced mathematical models for drug distribution prediction in other body tissues protected by barriers, such as the gut. The gut PBPK model will be linked to drug effects for treatment of colon cancer.

Thesis focused on uncovering the underlying mechanisms of the lysosomal storage disorders Gaucher's disease using chemical tools, biochemical assays and lipidomics.

The Laboratory for Human Osteoarchaeoloy examines human remains and their burial context to address questions about the human past.

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.

This collection of papers was compiled in celebration of the remarkable academic career of Professor Wil Roebroeks, who has established himself as one of Europe’s leading figures in Palaeolithic archaeology over the past three decades and founded the Human origins research group at Leiden University…

Promotores: Prof.dr. F. van Lunteren, Prof.dr. F.S. Gaastra

The routine assumption that Upper Palaeolithic early modern humans in Europe were regular fire users who produced fire at will has never been tested against the archaeological record. Utilizing literature, database and microwear analytical approaches, this project seeks to establish the role and forms…

In this provocative study, Shumon T. Hussain engages with the long-standing issue of French-Anglophone research conflicts in Palaeolithic archaeology.

The central question of this thesis is: What drives late Middle Paleolithic stone artifact variability? In its attempt to answer this question, this thesis is a contribution to understanding variability within and between late Middle Paleolithic assemblages of the European Plain.

Prof. Dr. Ir. Marin van Heel, Emeritus Professor at the Institute of Biology Leiden (NeCEN), is one of the winners of the “Wiley Prize in Biomedical Sciences 2017”. This annual award is presented to recognize contributions that have opened new fields of research or have advanced concepts in a particular…

What does the UN seek to achieve though global observance days, weeks and years and how have these initiatives impacted the role of the organization in forwarding the agenda of human rights?

During the next three years, 6 promising researchers from the Faculty of Humanities who have just been awarded their PhDs will be able to further develop their research ideas funded by a Veni grant from the NWO. A total of 147 Veni grants were awarded of which 14 went to researchers at Leiden Univer…

The genetic material of currently living Europeans is partly of Neandertal origin. Were our ancestors successful because they were hybridising and interacting with the local populations they encountered when migrating into new places? Reconstructing our evolutionary trajectory is key for rethinking…

How have human-environmental entanglements changed in the Gulf of San Miguel, Darien, Panama, from the first traces human practices through to the present?

Hermeneutics and the Humanities: Dialogues with Hans-Georg Gadamer / Hermeneutik und die Geisteswissenschaften: Im Dialog mit Hans-Georg Gadamer

This study presents an agent-based simulation model exploring the patterns of presence and absence of Late Pleistocene Neanderthals in western Europe.

This dissertation is part of a broader research project that revolves around unraveling the evolution of balanced lethal systems.

Language is a little bit like owning a mobile phone. We use it all the time, but we don’t really understand how it works. Where is language located in our brain? Do all humans have language? These and many other questions will be answered by professor Marc van Oostendorp in the MOOC Miracles of Human…

This research project focuses on the extended documentation and investigation of these non-Austronesian (‘Papuan’) languages.

Melanie Fink, Postdoctoral Researcher at the Europa Institute of Leiden University, has published her book Frontex and Human Rights, Responsibility in 'Multi-Actor Situations' under the ECHR and EU Public Liability Law. This work is based on her doctoral dissertation, which she defended in December…

The ECtHR needs to provide effective rights protection, but it also needs to set clear standards while showing deference to decisions made at the national level. Especially when socio-economic issues are concerned, meeting these different demands is a challenging task.

On Tuesday 23 May 2017, Jasmina Mackic will defend her doctoral thesis ‘Proving discriminatory violence at the European Court of Human Rights’. The defence will start at 15.00 hrs, at the Academy Building of Leiden University, Rapenburg 73. The supervisor of the research is Vice Dean and Professor of…