While African ground-based air quality measurements have struggled to gain national and continental footholds, satellite data, especially high-resolution measurements from the TROPOMI satellite, can provide not only continental coverage but lend new insights for regional to city-scale air quality issues…

Canal Watch (De Grachtwacht), which has been cleaning canals since 2018, has received the Dutch Research Council (NWO) Communication Initiative Award.

Ammonia has been feeding the world for decades as a fertiliser and is now rapidly emerging as a carbon free fuel for shipping and industry. But if we focus only on CO₂ emissions, we risk creating new nitrogen problems, warns nitrogen expert Jan Willem Erisman in the journal One Earth.

At the entrance of the Van Steenis building you may now visit an exhibition on material culture. Unexpectedly, it does not display pottery or tools, but building materials. And recent ones at that! Check out the exhibition on Legos lost at sea, conceived and assembled by PhD candidate Maia Casna. ‘These…

Leiden academics Remco Breuker and Auke-Florian Hiemstra stand to win the title of Person of the Year.

Join-in courses zijn MA-cursussen over middeleeuwse onderwerpen gegeven binnen vastgestelde MA-programma's van de zes deelnemende universiteiten van de Onderzoekschool. Op aanvraag zijn deze vakken toegankelijk voor studenten van andere (Nederlandse) universiteiten. De cursusbelasting en het aantal…

Which features characterize speakers’ voices, and how are these features determined by what a speaker is saying?

Wat zijn de huidige energiekosten en hoe is de comfortbeleving het wooncomfort in een bepaalde groep huurders van woningcorporatie Portaal?

On 10 June 2020, Gitta Veldt defended her thesis 'Europese productnormen en privaatrechtelijke normstelling'. The doctoral research was supervised by Prof. H.J. Snijders.

Mattias Brand defended his thesis on 10 April 2019

Duizenden metaalvondsten die door detectorzoeker wijlen Herman Zomerdijk zijn gedaan in de regio Kennemerland schetsen een uniek beeld van Noord-Holland door de eeuwen heen. Hij zocht en verzamelde decennialang historische metalen objecten in Noord-Holland en bouwde zo een unieke metaalcollectie op.

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

Issues such as climate change, the depletion of natural resources or social inequality are too complex to be addressed from a single scientific discipline or by a single country. Leiden University has the expertise to bring the resolution of these enormous problems a small step closer.

CML’s education programme aims at training (under)graduate and graduate students for integrated and multidisciplinary sustainability research and for better decision making in managing the world’s natural resources, environmental quality and biodiversity.

UNPLASTIC, a research project by Leiden University College The Hague (LUC) won the Dopper Changemaker Challenge 2019. LUC student Roos Kolkman represented UNPLASTIC during the semi-finals on Saturday.

Would you like to know more about our research using laboratory animals or our studies on alternatives to animal testing? If so, take a look at the news articles on the right-hand side of the page (for mobile users, see the bottom of the page).

Promotores: H.A. Udo De Haes, P.M. Brakefield

This thesis addresses the challenge of sustainable urban development by analyzing the interplay between green and grey infrastructure to optimize resource use and ecosystem services.

Freshwater and brackish water ecosystems are arguably the most vulnerable ecosystems on earth, due to concentrated human developments in and around them. The Pontocaspian (PC) region located at the border of Europe and Asia contains a variety of brackish water ecosystems and unique inhabitants, known…

Living labs make it possible for citizens to participate in research for sustainable development of their environment. This way citizens, together with scientists and stakeholders, create local conditions for food production, healthy environment, and biodiversity.

Freshwater is an important resource, but at a great risk of species decline due to habitat loss, pollution and over-exploitation, and invasive alien species.

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

Anthropogenic noise negatively affects wildlife in a wide range of taxonomic groups.

This study stresses the importance of investigating vitamin D deficiency in every community to better understand the deteriorating effect that sociocultural practices may have had on health.

The Honours Academy offers extra opportunities for students and teachers at Leiden University.

How do technological systems impact the environment? And can they be designed in a more sustainable way? The Resources and Energy research program studies the importance of resources and energy for our society and aims to guide the shift towards a sustainable circular economy.

Hydrodesulfurization (HDS) is an ubiquitous part of oil refining that ensures that fuels are cleaned of impurities and environment release of pollutants such as SOx and NOx gasses are minimized.

On 19 May 2020, Xuechan Ma defended her thesis 'Moving towards Coexistence and Cooperation: The Spratly Islands and International Law'. The doctoral research was supervised by Prof. N.J. Schrijver.

The marine shipping industry is one of the strongest emitters of nitrogen oxides (NOx), a pollutant detrimental to ecology and human health. Over the last 20 years, the pollution produced by power plants, the industry sector, and cars has been decreasing.

This thesis describes the role of pollution, specifically neonicotinoid insecticides, as an actor of the ongoing biodiversity decline.

The Grachtwacht (Canal Watch) conducts research on urban wildlife and the impact of plastic on nature. With our clean-ups, we not only collect waste, but also data. This way we try to find out the source of the waste and turn off the tap on shore. This way there is structurally less plastic in the c…

Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.

Leidse milieuwetenschappers doen onderzoek naar microplastics, bestrijdingsmiddelen en bemesting. En binnenkort naar lichtvervuiling en nieuwe materialen uit de nanotechnologie.

This thesis investigates reactive interfaces in surface science across three domains: heterogeneous catalysis, environmental nanoplastics, and two-dimensional materials.

The most urgent sustainability challenges, such as climate change, biodiversity loss, resource depletion, and pollution, are complex issues that concern society as a whole. This means that among employers there is a growing demand for graduates who are able to combine both natural scientific and social…

The Science for Sustainable Societies bachelor’s programme equips you to address pressing environmental issues through an interdisciplinary approach. By integrating natural sciences, social sciences, and governance, you’ll develop the expertise to analyse and solve complex sustainability challenges…

The Science for Sustainable Societies bachelor’s programme equips you to address pressing environmental issues through an interdisciplinary approach. By integrating natural sciences, social sciences, and governance, you’ll develop the expertise to analyse and solve complex sustainability challenges…

Over the past two centuries, socioeconomic development has improved material living standards but has also intensified environmental pressures, including climate change and biodiversity loss.

The Cryogenics Department has a liquid helium production unit and an automatic liquid nitrogen filling plant.

Wordt het nog wat met de Arabische lente?

À La Découverte de la Hollande dans les années 1760-1770 : Pierre Famin, Emmanuel de Croÿ-Solre, François-César Le Tellier, Jean-Marie Roland de la Platière, Gabriel-François Coyer. Textes réunis et présentés par Madeleine van Strien-Chardonneau, Paris, Société française d’étude du dix-huitième siècle,…

The Europa Institute has been the beneficiary of a generous grant from the H.L. Wesseling Fund. The Fund was established in memory of Professor Henk Wesseling (6 August 1937 – 18 August 2018), Dutch historian, Professor of contemporary history at Leiden University, and former rector of the Netherlands…

Nanoplastics influence the behaviour of larval zebrafish, says new research by the Institute of Biology Leiden (IBL) and the Institute of Environmental Sciences (CML). The researchers observed that a certain type of nanoparticles leads to stress reactions in the sugar balance, resulting in hyperactivity…

Do you want to find solutions to environmental problems that make a real impact? Do you have a broad interest and want to learn from insights from the natural and social sciences when analysing complex sustainability challenges? Then Science for Sustainable Societies at Leiden University may be the…

Indonesian Law and Reality in the Mahakam Delta

This study focuses on the local level impacts of a highly globalised industry: the international trade in tropical timber.

The mission of our group is understanding how science communication works to improve the interaction between science and society. We believe better science communication can improve our society and engage many different groups with science, also improving science.

A place where scientists and students from Leiden University and residents of The Hague come together to create innovative solutions for sustainable living in the city: that's what the Sustainable City Lab aims to be. When we talk about "sustainable living" we think of many different things. For example:…

The rise and fall of the cesspit in an urban context