The last decades it is increasingly recognized that acute as well as chronic postoperative pain is an important problem. Treatment and prevention of postoperative pain is a challenge, especially in special patient populations where there is only limited guidance on how to optimally use opioids.

How German Jews used photographs to document their experiences in the face of National Socialism.

This Festschrift in honour of Cary J. Martin

If an algorithm has to learn to understand language, simply having a lot of data doesn’t help much. Like us, a computer has to learn the language in interaction with others. Tessa Verhoef is fascinated by how this interaction works.

Linde Desmaele explores the role of US theatre nuclear weapons stationed in Europe. Moving beyond the deterrence vs. reassurance debate

Why do sexual violence policies still fail to systematically address men and masculinities, when the need for cultural change among men has been central in public debates since #MeToo?

On Thursday, November 20, 2025, the Leiden Jewish Studies Network celebrated the launch of the book Still Lives: Jewish Photography in Nazi Germany (The University of Pennsylvania Press, 2025) co-authored by Ofer Ashkenazi (Jerusalem), Sarah Wobick-Segev (Hamburg), Shira Miron (Basel) and Rebekka Grossmann…

Without scientific knowledge, we won’t be able to tackle the grand challenges of the 21st century: climate change, energy transition, social inequality and coronavirus, for example. Professor by Special Appointment of the Social Value of Science Laurens Hessels is therefore calling for more transdisciplinary…

There are still things we can learn from the Ancient Greeks. How they managed to make sure that innovations were accepted, for example. A group of classics scholars, led by Leiden, will be carrying out research on this question funded by the largest ever NWO subsidy.

Masterclasses, network meetings and coaching cafés: the Alumni Office was offering a whole range of activities every month for the University’s alumni. Until coronavirus broke out, that is. The Leiden Alumni Webinars mean that alumni can still meet and share their knowledge with interesting speakers.…

Particularly during this time of social distancing and remote learning, it is important to carry on meeting new people – even if you don’t always feel like it after another day staring at your screen, says Wessel van Dam. In his role as assessor at the Honours Academy, Wessel represents the interests…

Leiden University was present for the second time at the second Leiden Pride on Saturday.

If there’s one place at the University where it doesn’t matter where you come from, it’s De Kattekop. This, the University nursery, celebrates its 40th birthday in September. Its history reflects developments at the University. Parents are full of praise for it.

Native women are invisible in Mexican society. This is the conclusion Barbara Ortiz draws in her dissertation. PhD defence on 23 February.

At the recent UN summit in Geneva, representatives from more than 180 countries failed to reach a global plastics agreement. Esther Kentin, a lecturer at Leiden Law School, spoke to media outlets on the issue: ‘Human health is at stake.’

A clear, unambiguous definition of an extraparliamentary cabinet still seems to be missing in the political arena of The Hague. Caroline van der Plas, Farmer–Citizen Movement (BBB) party leader, wants to discuss this issue with the party chairs of the Dutch coalition parties. Wim Voermans, Professor…

The oldest forms of literature and law originate from Mesopotamia (3000 BC until AD 70), as do important discoveries in science and technology. All these developments were recorded in cuneiform texts on clay tablets. There is still a lot to learn from the study of cuneiform texts, says Professor of…

Pieter Omtzigt, a strong contender in the polls for the Dutch general elections with his New Social Contract party (NSC), has said he would prefer to remain in parliament as party leader. He is not saying who the NSC candidate for prime minister might be and will only reveal this after the elections.…

At the recent UN summit in Geneva, representatives from more than 180 countries failed to reach a global plastics agreement. Esther Kentin, a lecturer at Leiden Law School, spoke to media outlets on the issue: ‘Human health is at stake.’

A recent ruling by the Dutch Council of State indicates that asylum seekers may no longer be sent back to Italy. The Council of State increasingly concludes that the countries at Europe's southern and eastern external borders expose migrants to degrading treatment. This in particular is a reason for…

Leiden University's Pre-University College is celebrating its 20th anniversary. The programme introduced hundreds of secondary school pupils to science and the university. We asked those involved how PRE became so popular: ‘The students are the reason it still exists today.’

An international team of astronomers including Leiden scientists publishes the image of a young star with a surrounding dust disk that is still being fed from its surroundings. The phenomenon around the star SU Aur may explain why so many exoplanets are not neatly aligned with their star. The European…

Reuse everything and stop producing waste. By 2050, the Netherlands should have a circular economy. However, the new Integral Circular Economy Report by the Netherlands Environmental Assessment Agency (PBL) shows that there is still a long way to go. For the report, the Institute of Environmental Sciences…

Chances that Dutch Prime Minister Mark Rutte will become Secretary General of NATO are becoming increasingly likely now that the US and most western countries have expressed their support. The question now is how to appoint someone to the position of Prime Minister, who to appoint and when the situation…

The Oral History project, as part of the Tell Balata Archaeological Park project, published an arabic-english booklet of local stories about the site of Tell Balata. An archaeological site near Nablus (West Bank).

Cathodic corrosion for producing nanoparticles was (re)discovered when trying to control the electrochemical etching of a scanning tunneling microscopy (STM) tip.

The urban graveyard presents several studies in which the results of older archaeological and osteoarchaeological research are compared to more recent excavation data from several Dutch, Belgian and Danish cities and towns.

Decarbonizing the building stock is critical for realizing the climate-neutral target for the Netherlands.

On this page you'll find the recordings of the programme presentations held at the Leiden University Bachelor's Online Open Day of 7 October 2023. Perhaps you joined this event and would like to rewatch the presentations or are curious about ones you didn’t see the first time around. Or you haven't…

Known technical issues that still need a definitive solution.

What does it mean to eat healthily and responsibly? This question is gaining a new urgency now that in many countries undernourishment is being overtaken by diseases of affluence, such as obesity, and we are also becoming more aware of the environmental impact of our eating habits. It’s time to take…

From the Big Bang to superconductivity. Many ground-breaking discoveries have been made in Leiden University’s long history.

Promotores: J. Jonkers, K.E. de Visser

‘The Survival of Pliny in Padua. The Botanical Renaissance and the Transformation of Classical Scholarship’ in: Transformations of the Classics via Early Modern Commentaries, ed. by K.A.E. Enenkel. Intersections 29 (Leiden/Boston: Brill, forthcoming autumn 2013), pp. 327-62.

Promotores: F.H. van Lunteren, F.P. Israel

On this section of the website you can find more information about the Old Observatory and the current astronomy research institute.

The expedition commanded by Nicolas Baudin to Tenerife, Mauritius, Australia, Timor and South Africa in 1800-1804 is fully researched in regard to ornithology.

To what extent are individuals socialised with heteronormativity and gender norms by the national context in which they live, by Dutch schoolbooks, and within Dutch families?

Team Economic and Social History

De Belastingdienst weigert nog steeds cruciale documenten vrij te geven aan slachtoffers van het toeslagenschandaal, wat volgens critici tegen de wet ingaat en herstel belemmert. Hoogleraar staats- en bestuursrecht, Ymre Schuurmans noemt de praktijk in de media ‘stuitend.’

Governance of Sustainability

Are you thinking about studying Bio-Pharmaceutical Sciences? Learn more and watch the videos.

Are you thinking about studying Industrial Ecology? Learn more and watch the introduction video.