On this page you can find information about previous CCLS events.

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How do societies move forward with sustainable, effective and efficient management of Earth's water resources?

The Seasons of Interdisciplinarity are an initiative by the Young Academy Leiden that started in 2021.

Chemistry, which is what Hans Klis studied in Leiden, is not what one might expect of a general journalist. ‘I’m a late bloomer,’ he says, despite having spent four years as America correspondent and written a book on notorious school shootings by the tender age of 34.

It doesn’t take long before Tim van Lit has told us what interests him: problems that shake the nation. This 28-year-old Criminology alumnus heads a team of 25 at Royal Netherlands Marechaussee. Location: Schiphol Airport.

A Leiden and Mainz (Germany) based team studies the activities of early humans in a 125,000 years old Last Interglacial ecosystem, formerly exposed in a large open cast brown coal pit near Halle (Germany). The Last Interglacial is an important warm-temperate period, showing the full flora and fauna…

Who has control over which piece of land? Since independence in 2002 East Timor has been struggling to create a land tenure system that can deal with the grievances of past colonial ruling and conflict, and address the needs of its citizens, says researcher Bernardo Almeida. PhD defence on September…

Dutch troops, judges and politicians collectively condoned and concealed the systematic use of extreme violence during the Indonesian War of Independence. Historians have now shown how this could happen. ‘It was scandal management rather than prevention,’ says Leiden historian and research leader Gert…

The AI research in the area of peace, justice and security at each of the three universities in Zuid-Holland complements the AI research being performed by the other two. Three researchers explain. Part one in a series of five about themes that the three universities’ AI research covers.

On 27 February 1976, two men wearing motorcycle helmets and carrying loaded guns ring the door of temping agency Cito. A security van has just delivered cash. The suspect later claims in court that he and his friend were just doing a ‘dress rehearsal’ – preparing ahead in other words, but not an actual…

The publication of the recent IPCC report on climate change has not gone unnoticed, to put it mildly, certainly not within the Liveable Planet community.

So much has happened this year! 2023 was an eventful year in which several wars raged about which our experts could offer interpretation. It was also the year in which the government made apologies for the slavery past. Leiden humanities scholars were at the forefront of this with their research on…

In this blog post, Linda Slapakova discusses the various roles that AI plays in counter-disinformation efforts, the prevailing shortfalls of AI-based counter-disinformation tools and the technical, governance and regulatory barriers to their uptake, and how these could be addressed to foster the uptake…

In March 2020, the Netherlands-Flemish Institute in Cairo suddenly had to repatriate 57 students to the Netherlands and Flanders. Director and Arabic specialist Rudolf de Jong decided to stay in Egypt. ‘A lot of the work carries on.’

Leiden Law Cast is a podcast made by Leiden Law School, Leiden University, for everyone who wants to learn more about current legal issues.

The legal distinction between victims of human trafficking and victims of migrant smuggling is unjust, argues De Massol Rebetz in her PhD thesis. In certain instances, smuggled migrants should be treated the same as victims of human trafficking.

Tyron Offerman wants to get the most out of life. This 28-year-old computer scientist and business economics graduate has an impressive three jobs: IT strategy consultant, and lecturer and PhD candidate at Leiden University. All his own choice. ‘I do a lot of sports. I have to to be able to keep all…

Horizon Magazine published about urban food systems.

Professor Eline Slagboom has been studying multiple generations of families for over 20 years. She collects data on why some people age healthily and others decline early.

Many students are finishing their master thesis on sustainability this summer. In this blog, we reflect on their topics, approaches, and goals by highlighting theses from Governance of Sustainability, European Law, Global Archaeology, Computer Science: Artificial Intelligence, Industrial Ecology, and…

The celebration of Leiden's Dies Natalis on Monday 9 February in the Pieterskerk was extra special this year and was attended by many prominent guests. This was the kick-off of the special 88th Lustrum (five-year) celebrations in 2015.

'I belong here.' This is what the young Jewish law student Hetty Koster felt when she attended the memorable protest speech given by Professor Cleveringa on 26 November 1940. She managed to survive the war by going into hiding. She married Dolf Cohen, later Rector Magnificus of Leiden University, and…

Stress, burnout, depression – these conditions pervade all levels of our society. Children and students suffer from constant pressure to achieve; at the international level, tensions lead to short-sighted actions; and, at the personal level, stress affects our health and social environment. How do our…

For the first time, a group of international and interdisciplinary researchers led by Karline Janmaat and her former MSc Student Chirag Chittar, have tested the several hypotheses on music simultaneously in a modern foraging society during their daily search for tubers – their staple food.

International education in the Netherlands is under pressure. There is pressure on the student housing market, and there is a greater desire among right-wing parties to keep our education and students within the borders and to make studies Dutch-language. In these social matters we look at what international…

The latest forum in the Hague Journal of Diplomacy highlights the rich potential for interdisciplinary research at the intersection of architecture, diplomacy, and international relations. These contributions, spanning from the early American republic to the contemporary era, reveal how diplomatic spaces…

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The research project ‘The History of National Security, 1945-present', is funded by the Netherlands Organisation for Scientific Research (NWO), the Campus The Hague/Leiden University and the Netherlands Institute for Military History (NIMH). The project will run until the summer of 2013, when we hope…

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In his biography about Professor Rudolph Cleveringa, Kees Schuyt adds to the image we already have of this famous Leiden professor. The overriding focus is generally on Cleveringa’s protest speech against the Nazis, while his later Resistance work carried much greater risks. And we also shouldn't forget…

2021 was an eventful year once again for the Faculty of Governance and Global Affairs (FGGA). Hybrid, working from home, online education, on-campus education, face masks, self-tests, keeping distance, quarantine and the coronavirus. Words that have now become a standard part of our vocabulary when…

In the ESOF2022 mini-symposium organized by the Social Resilience & Security programme, international experts with a background in psychology, philosophy, and law discussed how the online world is related to adolescent mental health issues, moral and emotional awareness and children’s rights. In three…

Those who know their dystopian classics will inevitably associate the concept of surveillance society with the all-knowing oppressive force characterized as Big Brother in George Orwell’s novel 1984. However, surveillance permeats our society in many more subtle aspects than our worst fears about spy…

Never before has so much research been carried out on the therapeutic effect of psychedelic drugs. Researchers at the LIBC Public Day are happy about the effect the drugs can have on depression, anxiety and PTSS, but at the same time they have some doubts. ‘The hype is bound to crash before long.’