How does invasive hybridization affect threatened native species?

Galaxies form and evolve through close interaction with their surroundings. As a result, the heavy elements ('metals') that are synthesized in stars, are found both inside and outside galaxies.

A political-legal study of rights invocation by pollution victims in China and Indonesia

On 17 October 2019, Laure d'Hondt defended her thesis 'Addressing Industrial Pollution in Indonesia. The Nexus between Regulation and Redress seeking'. The doctoral research was supervised by prof. A.W. Bedner and dr. J.A.C. Vel.

Using the principles of Industrial Ecology in Environmental Policy making in two cases: transition to a hydrogen economy and chlorinated compounds.

This thesis combines field and laboratory studies to address some of the most pressing questions in the field of microplastic research.

Do e-waste workers display enhanced effects of adverse health effects due to informal e-waste processing in Nigeria? Is there a difference between the health outcomes of the exposed and the control groups? Are there difference in health effects within and between job groups (collectors, dismantlers,…

On Friday evening 8 June, Thijs Bosker, Associate Professor at Leiden University College (LUC), was on television in NOS Jeugdjournaal about plastic pollution and microplastics "the danger of microplastics is that it can end up in the food chain and even on our plate ".

On Friday morning, 8 June, Thijs Bosker, Associate Professor at Leiden University College, was interviewed by NPO Radio 1 on plastic pollution in Antartctica: ''Anually, an additional 4 - 12 billion kilos of plastic ends up in our ocean''.

From 26 to 29 September 2017 the International Conference on Microplastic Pollution in the Mediterranean Sea was held.

Scientists and non-scientists co-creating breakthrough citizen science projects for measuring, understanding, and mitigating air pollution. That’s what happened during the first international workshop of the newly established Citizen Science Lab from 22 until 26 January at the Lorentz Center at Leiden…

On 27 November 2019, the Royal Netherlands Academy of Arts and Sciences (Koninklijke Nederlandse Akademie van Wetenschappen) organized a symposium on the plastic pollution crisis.

Catalyst research aims to make gasoline less polluting. It turns out that during experiments it is actually necessary to protect catalysts from air itself. Publication in The Journal of Physical Chemistry C on August 26.

Two years after the first conference, the Napels based Institute of Chemistry and Technology of Polymers, together with a consortium of organisations and research institutes, organised the second conference from 15 to 18 September in Capri, Italy.

In our globalised economy, goods and services are frequently produced abroad. Is it the producer or the consumer that should be held responsible for greenhouse gas emissions associated with production? Together with colleagues from Berlin, Hauke Ward of the Institute of Environmental Sciences (CML)…

Promotores: Prof.dr. G.R. de Snoo & Dr. R. Heijungs

More than three quarters of the 237 million Indonesian population has no access to tap water. They are dependent on water from rivers often polluted by industry. Laure d’Hondt conducted research into why it is so difficult to tackle these polluters and will defend her PhD dissertation on 17 October.

From 27 to 31 January, a workshop on the regulation of plastic pollution based on scientific evidence will be held at the Lorentz Center in Leiden.

Fishes rely heavily on sound to find their way during migration or dispersal. Many species are affected by noise pollution. Hans Slabbekoorn from the Institute of Biology Leiden received a HORIZON2020 grant of 500,000 euros to study the impact of sound conditions on movement decisions of fishes.

What is the effect of light at night on plant phenology and physiology, and how does this affect plant interactions with other species?

Leiden astronomers and ecologists are developing an instrument that lets people measure the quality of surface water with a smartphone.This international citizen science project, MONOCLE, is a collaboration between scientists and local people in Tanzania, Brazil and four European countries.

Promotor: S.M. Verduyn Lunel, Co-promotor: O. van Gaans

Promotor: W.T. de Groot

Promotor: Carel J. ten Cate, Co-Promotor: Hans W. Slabbekoorn

The project’s overall goal is to improve Indonesia’s environmental legal framework and its implementation by strengthening the regulatory capacity of the government, and by enhancing the capacity of CSOs and scholars to hold the government accountable for its regulatory performance.

Thomas is currently a Bachelor’s student at Leiden University Law School.

Daan is a LLB student at Leiden Law School.

Agata is a Public International Law Master’s student at Leiden University.

Festival

PhD Defence

Prerna is a Master’s student in Public International Law at Leiden Law School.

Pratik is currently a student at Leiden University.

Mapping out the problem of plastic pollution requires a lot of data over a large area. That's why scientists are increasingly turning to volunteers for help, also known as citizen science. But what are the challenges for a researcher when he or she involves the public in research in this way? Four Leiden…

The Leiden Advocacy Project on Plastic (LAPP) is a pro bono initiative concerning legal questions on plastics and is founded to address and research the legal issues related to plastic pollution.

The earth has more than 7 billion inhabitants, all of whom leave behind traces of pollution. However, not all forms of pollution have the same harmful effect. Leiden scientists help determine where we should put our priorities.

The Citizen Science Lab supports researchers, citizens and societal organizations to generate new knowledge together. Explore this website to learn more about the Citizen Science Lab and projects in which you can participate.

Current projects

Can we distinguish the effects of pesticides from other abiotic and biotic factors that occur in the field? And how do these factors interact with pesticides?

Lecture

The new programme Synoptic Optics, funded by the NWO Domain Applied and Engineering Sciences, will develop new optical techniques. Researcher Frans Snik and Professor of Experimental Astrophysics Christoph Keller from Leiden Observatory will test novel approaches to monitor air pollution and discover…

Teresa is currently a student of Public International Law LLM at Leiden University.

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

Does Artifical Light at Night (ALAN) disrupt seasonal physiological and behavioral patterns in migrating freshwater fish?

Four Master's students Science Communication & Society made two podcasts on the theme Plastic for the end project of their study programme. With the podcasts, they helped the Institute of Biology Leiden (IBL) to draw attention to plastic pollution. And that was harder than it seemed. 'Be sure to test…

Are there acoustic cues for settlement stage larvae in deep-sea soundscapes around hydrothermal vents?

Shell, our country's largest company, is constructing a vast plastics plant in the United States. And it is doing so at a time when the European Union, led by the Netherlands, is launching a major pact to combat use of plastic.