Do you have to be able to say everything on Twitter and Facebook? Is Instagram morally obliged to remove photos from attacks? Should we allow the terrorist group to recruit new members on the internet?

Operators in the Lexicon opens with an old chestnut: why are there no natural single word lexicalizations for negations of the propositional operator and and the predicate calculus operator all: why neither *nand nor *nall?

Nietzsche has often been considered a thinker independent of the philosophy of his time and radically opposed to the concerns and concepts of modern and contemporary philosophy. But there is an increasing awareness of his sophisticated engagements with his contemporaries and of his philosophy's rich…

Promotor: J.M. van den Broek Co-promotor: M.C. de Vries

Law and peace in the work of Hans Kelsen. A re-evaluation of Kelsen’s legal philosophy: legal pacifism as tacit meaning of his Pure Theory of Law

In this paper, Sibgatullina and Abbas aim to illuminate the complex connections between the European right-wing movements and Islam and discusses how the adoption of Muslim identity may function as a politically strategic opportunity for European conservative forces.

This project studies the theory and practice of moral education in the (Neo)Platonic tradition.

The growing popularity of corporate self-regulation to address supply-chain issues puts Corporate Social Responsibility and specifically codes of conduct, at the centre of attention. In this article, Jaroslaw Kantorowicz, Sarah Vandenbroucke and Yvonne Erkens analyse supplier codes of conduct of multinational…

Promotor: M. Danhof, Co-promotores: J. Freijer, A. Yassen

With a lot of theoretical knowledge, practical experience, and your bachelor's degree in the pocket, you are ready for the next step: either entering the archaeological job market or continuing your studies.

The programme consists of 60 EC, to be completed in one year.

In a podcast episode of 'New Books in History' Claire Weeda talks about her book 'Ethnicity in Medieval Europe 950-1250: Medicine, Power and Religion'.

Online cursus The Importance and Power of Music in our Society

In the fall of 2021, Cleveringa professor Roméo Dallaire and world experts shared their thoughts about PTSD, children’s rights, war crimes, humanitarian law, and peacekeeping in a series of conversations about leadership and moral dilemma during times of conflict and crisis.

In the Public Administration specialisation in Policy, Public Administration and Organisation, you will analyse current issues such as the housing crisis, energy transition, and immigration. You will learn how policy is developed and how public organisations function from various perspectives.

Archaeological and Anthropological perspectives

This political theory specialisation focuses on the concepts of legitimacy and justice—political philosophy’s core themes. These concepts lie at the heart of questions of politics and analyzing them conceptually and theoretically gives us tools to engage and assess political practice.

This MA programme offers an excellent qualification in Italian literature and culture on an advanced level through lectures and seminars led by specialists in the field.

Environmental Humanities in the New Himalayas: Symbiotic Indigeneity, Commoning, Sustainability showcases how the eco-geological creativity of the earth is integrally woven into the landforms, cultures, and cosmovisions of modern Himalayan communities.

Students and researches from all faculties at Leiden University attended a lunch seminar to discuss with four topic experts the rise of AI and the challenges this poses for various governance structures. The event was hosted by Leiden University’s interdisciplinary programmes GTGC and SAILS.

Within the Institute of Security and Global Affairs, research is organised in seven main research groups:

The latest research from the Leiden outdoor laboratory ‘Living Lab’ shows that the insecticide thiacloprid strongly influences even the most common and robust dragonfly species in the Netherlands. The study was published in the Journal of Applied Ecology.

Lecture, Journalism Studies Seminars

The doors of the new Gorlaeus Building are officially open! With an additional lab wing, new lecture halls and offices, a library, a brasserie, and spaces for student associations, the building offers a vibrant and inspiring environment for research, study, and social interaction. Explore on your…

Below you will find an overview of all PRE-Classes provided by the various programmes of Leiden University. For each section, you can find a description of the content and more specific information about the requirements for participation in the Class.

PhD defence

Protests against textbooks on trans persons in America and against a reading hour by drag queens in Rotterdam: it has been raining protests recently against people with a gender expression that does not match their birth sex. Why does this evoke such resistance? We asked Professor by special appointment…

Lecture

Earlier this year, the public voted environmental scientist Paul Behrens Discoverer of the Year 2018. Behrens is an interdisciplinary scientist who wants to understand our impact on the planet. ‘Unfortunately, we are not doing enough. Huge changes are underway and we’re running out of time to avoid…

In 2014 Hans-Martien ten Napel received a Research Fellowship in Legal Studies at the Center of Theological Inquiry in Princeton, NJ. The book he wrote as a result of this fellowship was published last week by Routledge Law.

The fact that a significant number of seats in the Dutch provincial councils are now occupied by members of the Dutch Farmer-Citizen Movement (BoerBurgerBeweging, BBB) who have an agricultural background need not lead to conflicts of interest when voting on, for example, nitrogen emissions. This is…

From 26 August until 5 September 2019, a group of 20 Chinese government officials, industry representatives and academics attended an intensive course on space law and policy at the International Institute of Air and Space Law, organized in cooperation with Avans+ in Breda.

Overview of the publications of the department of Environmental Biology (1972-2015)

Anthe Janssen graduated ‘summa cum laude’ for the master’s programme Chemistry.He used NMR methods to gain insight in the syntheses and behavior of bio sugars. With this knowledge future therapeutics and research tools in hemical and medicinal biology can be developed. Anthe was awarded € 2.500.

A full overview of BPOC/SSNMR PhD theses.

Here you will find information about Guus Boelens' graduation ceremony.

In Leiden University's Vision on Sustainability 2030, biodiversity (biological diversity) is an important focus in its teaching and research and on its campuses.

How can we manipulate the biotic and abiotic environment to increase thrips resistance in tomato and chrysanthemum? More specifically we ask: How can plant secondary metabolites that are not soluble in water be delivered to plants in seed coating or root dipping treatment? Can bacteria be used to…

Animal Sciences’ contributions to the Evolution & Biodiversity research theme include evo-devo research, the evolution of cognitive and behavioural traits, and the evolutionary mechanisms of stress adaptation. This research involves both indoor and outdoor studies.

A neolithic settlement on the Dutch North Sea coast c. 3500 CAL BC.

Dishoeck

Decentralized plug and play systems for energy production are the future picture of our society. Artificial photosynthetic systems are used for this purpose.

Barrier function is the natural role of the skin. The lipid matrix present in the outermost layer of the skin, the stratum corneum is important for this function.

As a contribution to the changing legislation and evolving societal attitudes concerning environmental issues, this project aims to enhance and manipulate the plants’ own natural defense mechanisms against western flower thrips (WFT).

LUCIS promotes high-quality research on Islam and Muslim societies and actively communicates the insights and findings of that research to the larger public.

The team consists of

This thesis systematically studies the physicochemical properties of non-planar, propeller-shaped, polycyclic aromatic hydrocarbons. The synthesis of several so-called propellerenes is described on a gram scale, using optimized procedures aimed at using less hazardous reagents and reducing the amount…