Human activity, such as pollution, may disturb the balance of living water systems, which has consequences for biodiversity, but also for other functions such as water purification. Leiden University maps living water systems using the most advanced technologies.

MSc Law and Society brings together students from law and social sciences to examine the dynamic relationship between legal norms and social reality. Its global orientation, interdisciplinary approach, and focus on social justice make this master’s programme unique in its field.

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.

The programme provides you for a succesful career. As a graduate, you will be qualified for positions within organisations such as international courts.

Do offshore windfarms affect the local biodiversity of the pelagic fish community and are fish deterred or attracted by sounds?

Springer Water series published the conference proceedings of the International Conference on Microplastic Pollution in the Mediterranean Sea.

On Tuesday 2 April Vice President of the European Commission, Frans Timmermans, came to Leiden to receive the Plastic Avengers Manifest from Plastic Soup Surfer Merijn Tinga. The Manifest contains five key areas for a new approach to deal with how we use plastic.

Artist Daan Roosegaarde, together with UNESCO and Leiden University, wants to make the stars come out during Seeing Stars Leiden. The University will therefore switch off the lights in most of its buildings on Sunday 25 September from 22:00 to 23:30 and is asking the people of Leiden to follow suit.

Una Europa launches regular seed funding calls. Leiden University and other Una Europa partners also often offer funding for projects involving Una Europa universities.

Explaining your PhD research to others can be quite difficult, especially without talking! PhD student Annebelle Kok of the Institute of Biology Leiden was one of the finalists of the 'Dance Your PhD' competition of scientific journal Science. ‘You have to understand your own research well if you are…

Plastic pollution is a major global problem. In Geneva, world leaders are discussing a possible plastics treaty. Lecturer Esther Kentin talked to Dutch news platform NU.nl about the UN summit: ‘A treaty is only a small part of the solution.’

Plastic pollution is a major global problem. In Geneva, world leaders are discussing a possible plastics treaty. Lecturer Esther Kentin talked to Dutch news platform NU.nl about the UN summit: ‘A treaty is only a small part of the solution.’

What will happen if the lights in a large part of the city are switched off? How many stars can you see without all that light pollution? This is what researchers, artists and the residents of Leiden are going to investigate during Seeing Stars Leiden on 25 September. ‘Leiden is the ideal place for…

The Sustainability Research Cluster fosters dialogue and collaboration among anthropologists and sociologists researching aspects of socio-cultural, ecological, and economic sustainability in and affiliated with the Institute of Cultural Anthropology and Development Sociology. It also seeks to stimulate…

Microplastics are everywhere: in the ocean, in cooking salt and even in animals. Should that worry us? 'Yes,' said environmental scientist Thijs Bosker during a pop-up lecture in The Hague on 8 September. ‘We really need to do something now, not wait until it becomes an even bigger problem.’

On Friday 8 February, the first Plastic Avengers Conference took place in Amsterdam. Initiator Merijn Tinga, the Plastic Soup Surfer from Leiden, brought together ‘independent plastic fighters' to arrive at a manifesto against plastic pollution. The Leiden Advocacy Project on Plastic was also invited…

Merijn Tinga, the Plastic Soup Surfer, launched the Pick Up 10 campaign. This campaign, supported by Google and National Geographic, uses photo recognition to identify and monitor litter through an app.

The objective of this study is to better understand the distribution of microplastics in the environment. More specifically, we will quantify the abundance and distribution of microplastics on beaches.

Seagoing vessels may emit fewer and fewer harmful substances, but how do you measure whether they comply with the standards? The Dutch Environment and Transport Inspectorate (ILT) and the universities of Leiden and Wageningen are starting a joint study to detect the emission of sulfur and nitrogen dioxide…

Esther Kentin wrote a blog for the Leiden Law Blog about the EU Plastics Strategy: ‘Recycling as panacea for plastic pollution: the EU Plastics Strategy.’

‘De aanpak van microplastics zit vol haken en ogen’

Meet the people behind Science for Sustainable Societies! As a small-scale and hands-on bachelor’s programme, our team plays a big role in shaping your learning experience. In this section, you will find interviews with the people who make this programme happen: our teachers, researchers, educational…

The African Studies Centre Leiden’s Research Programme for 2025-2029 is called ‘African Trajectories: Past Dependencies and New Directions’. Building on its former programme, it extends the recognition of Africa’s pivotal role in world affairs. The continent’s global significance has become increasingly…

Improving environmental risk assessment of pesticides in surface waters

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

Over the past century, the world population has grown exponentially, as has our need for energy and raw materials. If we wish to continue to live prosperously in the future, we have to radically restructure our economy and consumption. Scientific research shows us how to do this.

Dr Kim Duistermaat (NVIC) en Niels Groot (TU Delft)

This 48-month project is to contribute to a solid, accessible, domestically owned knowledge base for people-centred interventions aimed at strengthening access to justice in Libya (A2JiL), and to disseminate such knowledge among stakeholders, enhancing awareness and the capabilities required to provide…

The ties between Leiden University and South East Asia, especially Indonesia, have been strong for centuries.

The relationship between States and foreign corporations are regulated by international economic law and international investment law in particular. Any disputes between States and foreign corporations must therefore also be solved by reference to this body of public international law, for example when…

Over the past century, the world population has grown exponentially, as has our need for energy and raw materials. If we wish to continue to live prosperously in the future, we have to radically restructure our economy and consumption. Scientific research shows us how to do this.

It’s Not Easy Being Green – but we’re here to help! 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 do you want to hear about the…

Research at the Macromolecular Biochemistry group is comprised of the following research themes:

The purpose of eLaw's Working Groups is to stimulate a productive working environment for cooperation within the Center for Law and Digital Technologies at Leiden University.

Core Facilities are shared resources that provide access to instruments, technologies and services to researchers across the Institute of Biology.

‘What if we switch off all the lights one evening? That idea crossed my mind from time to time. And when I mentioned it to a taxi driver one day, he said: “Oh, you mean: lights out, stars on!” That’s not completely true, of course, because the stars are always on, but his phrase summed up the idea n…

Following the Beirut explosion, BBC's podcast series The Foodchain explores the chemical that caused the blast: ammonium nitrate. A compound that is widely used to produce fertilizer. Professor of Environmental sustaibability Jan Willem Erisman tells about the effects of nitrogen on the environment.

A plan for the future from green farmers.

Marcel Cobussen is professor of Auditory Culture at ACPA. Recently he has published a report (in Dutch) commissioned by the city government of Leiden (NL) on the sonic redesigning of a public space (the Garenmarkt) in Leiden. He is also one of the founders of The Journal of Sonic Studies, an Open Access…

Project leader Esther Kentin has published an article on the European chemical regulation REACH and the restriction of microplastics in a physics journal.

LAPP was invited by the Plastic Soup Surfer to attend the premiere screening of SOURCE 2 SEA, a documentary following the Plastic Soup Surfer on his journey along the Rhine.

The Leiden University Medical Center (LUMC) has received a 4m grant for the ECOTIP project. In this project researchers will study how our physical environment affects our health. The aim is to find tipping points: at what point is there a real lack of greenery, healthy food or clean air in a neighb…

Three international research projects involving Leiden University researchers will receive funding from the Una Europa university alliance.

Fleur Visser was awarded a Veni grant by the Netherlands Organisation for Scientific Research (NWO). She is one of seventeen promising young Leiden scientists, who get the opportunity to develop their own ideas over a period of three years. Veni-funding is part of NWO's Talent Scheme, concerning…

As climate change and ecological degradation’s effects on our mental health becomes more severe, we must all do our best to protect not just the environment, but also our mental well-being. Therefore, on this Sustainability Day, we have collaborated with Healthy University Leiden to focus on the relationship…

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…