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.

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

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.

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.

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.

The sand on European beaches may look pristine, but in every kilogram of sand there are on average 250 microplastics: fragments smaller than 5mm. These results are part of a study from Leiden researchers with the help of beach-goers throughout Europe.

Current clients

Promotor: M.L. van Hecke

'We have to look for products that can replace ordinary disposable plastics, for example of organic material. Within 20 years, the average plastic use of a household will be largely reduced.' According to Thijs Bosker, Associate Professor at Leiden University College, in Edition NL of Tuesday, October…

Promotor: P.M. Brakefield

What motivates citizen scientists in the Schone Rivieren project to contribute? How does their motivation, attitude and knowledge change over the years? Are there differences in motivation and attitude between different groups of volunteers (clean up vs. monitoring; long-term vs. short-term)?

The opening of the Academic Year 2017-2018 took place on Monday 4 September 2017 in Pieterskerk church.

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:…

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?

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.

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…

How can pupils and students learn to get a grip on complex 'swamp situations'? Inaugural lecture in abbreviated form held by prof.dr.ir. Fred Janssen on the acceptance of the post of professor of science education at Leiden University on 19 June 2017.

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

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.

The world is becoming clogged with plastic, with tiny plastic particles found everywhere, from the oceans’ depths to the mountain tops, soil, plants, animals and even inside us. The question is: what harm, if any, are they causing? In a new article on The Conversation, environmental scientists Meiru…

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.

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.

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

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.

How can you do your bit for sustainability? Students from Leiden University have launched an interactive website with 150 sustainable initiatives in and around The Hague. The website Sustainable The Hague makes it easy to find a sustainable shop, restaurant or community initiative in your local area…

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.

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

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

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.

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.

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''.

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

Merijn Tinga hit the headlines in 2016 as the Plastic Soup Surfer. In force six winds, the Leiden biologist ventured across the English Channel on a hydrofoil kiteboard made from plastic bottles. Interview with this Leiden artist who is fighting the mountain of plastic waste and finding his feet as…

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…

Whales in the vicinity of the city of Auckland, New Zealand consume large amounts of microplastics every day. A team of international researchers reached this conclusion after carefully examining whale poop. The team included Thijs Bosker, Associate Professor in Environmental Sciences at Leiden University…

Last week Esther Kentin participated in the Second Meeting of the Ad Hoc Open-Ended Expert Group on Marine Litter and Microplastics organized by UN Environment in Geneva.

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.

Nederland Circulair! is organising the week of the circular economy, for the second time. This is a great setting for Leiden University to promote several of the university’s circular initiatives. We will kick off with an initiative by alumna Noortje Schrauwen: Raw material beachcombing.

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.

The eight ambitions of Leiden University's vision on education - Learning@LeidenUniversity - were the key theme of the packed Education Festival on 19 June. More than 200 lecturers and students came to PLNT, Leiden's innovation hotspot, for inspiration and best practices in the field of educational…

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…

Underneath you will find the 12 most important Facebook events that took place at the Faculty of Governance and Global Affairs in the past year, and an overview of our Instagram highlights of 2018.