Nietzsche's most famous and infamous book Thus Spoke Zarathustra is perhaps the most read, but probably also the least understood, book in Nietzsche's oeuvre. Nietzsche considered it his highlight. He called it a symphony, a holy book, a fifth gospel and even the greatest gift ever given to humanity.…

Promotor: M.L. van Hecke

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.

Promotor: P.M. Brakefield

Help us spot and clean up the plastic in the canals of Leiden! Leiden University is calling on the good folk of Leiden to help our researchers study the plastic in the city’s canals. And if you’d like our canals to be plastic-free, why not donate towards a fleet of canoes to clean them up?

Promotores: Prof.dr. P.M. Brakefield, Prof.dr. B.J. Zwaan (Wageningen Universiteit)

The Plastic Soup Foundation and Parley for the Oceans hosted the very first Plastic Heath Summit in Amsterdam on 3 October, covering the most relevant and pressing health concerns surrounding plastics and human health. Beyond discussing the latest findings in the field we asked the urgent question:…

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.

Current clients

Two weeks after 3 October the Leiden canals were still full of plastic disposable cups. Auke-Florian Hiemstra and fellow students have fished thousands of these cups out of the canals and photographed them. Now they put a photo of one of these canal cups on Instagram every day.

This is the team of LAPP:

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.

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…

What would be the environmental performance of the Carbon4PUR technology at industrial scale in the future?

On 3 May2017 LAPP participated in a meeting on microplastics at the Plastic Soup Foundation.

Leiden University will install over 30 tap water stations in the autumn of 2017 at the various University buildings. The first is already in use.

14 March 2018 a Citizens’ Dialogue about plastic-use in Europe with First-Vice President Frans Timmermans took place in Utrecht. It was one in a series of dialogues organized by the European Commission held throughout Europe. LAPP-student Emily den Boer joined the evening.

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.

LAPP students Emily den Boer and Louise Floris, together with Esther Kentin, wrote about the proposal for a plastic bottle deposit return system that has been discussed in the Dutch Parliament in April 2019.

Every Sunday you can help fish plastic and other floating garbage out of the Leiden canals. You can use your own canoe or loan one from Plastic Spotter and join the garbage-fishing fleet. Annetje Ottow, President of Leiden University, was one of the crew on Sunday 4 July.

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.

After studying medicine in Leiden, Diederik Hofstede specialised in plastic surgery. 'I was attracted by its creativity and I enjoy working with my hands.' Cosmetic surgery is just 5% of the work.'

This year will see the start of not one but two citizen science projects in Leiden and The Hague. This is the outcome of a large survey among residents and researchers in both university cities. The Citizen Science Lab will help the winners implement their ideas, with support from the University and…

One person can already make a difference, and if all students and academics were eco-friendly, the world would be a much more sustainable place. Plastic Soup Surfer Merijn Tinga opened the academic year in Leiden with this message.

International trade has played a major role in defining the modern global economy. Trade, however, entangles the environmental pressures of economic sectors, giving the illusion of environmental improvements, while the opposite may be occurring.

It's now possible to measure how many plastic particles there are in our food. Chinese scientists and Leiden professor Willie Peijnenburg applied their new method to lettuce and wheat. Their results were published January 20 in Nature Nanotechnology.

The last blog of Leiden Law Blog of 2018 was written by Ladislav Kováč. He discusses the proposal for the Single-use Plastics Directive of the EU which was agreed upon on 19 December.

LAPP student Heidi Kaarto and project leader Esther Kentin published an article on the right to regulate in relation to an EU ban on microplastics in a special issue on plastic regulation of Review of European, Comparative & International Environmental Law.

A team of students from Leiden and Groningen took the second prize at the European final of the BISC-E sustainability competition. Last June, the team had already won the Dutch finals. The students came up with ‘Suckerspheres’, a natural alternative to the plastic micro-particles that are still frequently…

C.R. Hermans (2012). Facsimile-editie van Noordbrabants Oudheden aangevuld met enkele Archeologische Mengelwerken.

On 12 March 2019, KPN published the sixth edition of the European Cyber Security Perspectives. Sergei Boeke, researcher at the Institute of Security and Global Affairs, has written an article about Cyber ​​Warfare.

Nederland ligt in de periferie van het verhaal van menswording. De evolutie van onze familie vindt lang exclusief in Afrika plaats. En, als Europa eenmaal bewoond wordt door mensachtigen, ligt het zwaartepunt ten zuiden van onze streken. Toch heeft ons land een aantal interessante vindplaatsen en vondsten…

Onlangs verscheen het boek ‘Afgrond zonder vangnet’ van Yra van Dijk, hoogleraar Moderne Nederlandse Literatuur. In haar boek analyseert ze verschillende thema's in het werk van Arnon Grunberg.

In juli 2024 is het boek 'Evaluatie Wet homologatie onderhands akkoord' uitgebracht. Het boek bevat het rapport van het evaluatieonderzoek van de Wet homologatie onderhands akkoord (WHOA) uitgevoerd door een onderzoeksteam van de Rijksuniversiteit Groningen en de Universiteit Leiden in opdracht van…

Promotor: Prof.dr. M.K. Richardson, Co-Promotor: F. Witte

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…

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.

Below you will find an overview of the publications of The Leiden Advocacy Project on Plastic.

Below you will find a collection of books, other than those in the BLRN book series, to which members of BLRN have contributed.

Former clients en projects

Wordt het nog wat met de Arabische lente?

The Hague Program for Cyber Norms, a research program at the Institute of Security and Global Affairs, published its first policy brief, in which Dennis Broeders, Sergei Boeke and Ilina Georgieva explore the role of intelligence agencies in cyberspace and the (im)possibilities of oversight and regulation…

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…

Auke-Florian Hiemstra is the Leidsch Dagblad Person of the Year 2022.