PhD defence

Knowledge institutions play a unique role in society and can contribute to a future-proof and sustainable world. That’s why Leiden University has signed the ‘Think green, act green’ manifesto. The manifesto is the initiative of The Young Academy and The Green Young Academy, who are calling on universities…

Researchers at Leiden University have been awarded a €4 million EU grant to develop climate-neutral fuels. With this money they will expand the broad research community that focuses on green energy. If we work together, we can make the rapid progress that is needed, says Prof. Huub de Groot, Professor…

Building more in urban areas is, in most places in the Netherlands, the smartest way to tackle the housing crisis. This is evident from research conducted by Janneke van Oorschot, published in a partner journal of Nature. Remarkably, this does not have to come at the expense of green spaces in cities.…

When do we define a piece of nature in the city as a park? And when is something a tree or shrub? It may seem obvious, but in scientific literature the definitions vary quite a bit. That makes comparisons difficult. Environmental scientist Joeri Morpurgo looked at the differences and designed a general…

On top of the Gorlaeus Building’s bike parking sits a hidden green surprise: Leiden’s largest rooftop garden. Since this academic year, the garden has been open to all students and staff.

With its Green Deal The European Union has set itself much-needed ambitious climate goals. But the energy crisis and geopolitical tensions are making these difficult to achieve. Seven researchers from the Leiden-Delft-Erasmus Universities (LDE) alliance have written a white paper offering solutions.

Leiden University is seeking bids from developers for housing in Nieuw Rhijngeest-Zuid, the Oegstgeest part of the Leiden Bio Science Park.

Medical drugs are expensive to make and can have an adverse effect on the environment. Researchers Stefano Cucurachi and Justin Lian have developed a framework to help the healthcare system assess the economic and environmental sustainability of medical compounds.

In supermarkets, consumers are drowning in a sea of sustainability labels. Confusing for them, but also farmers can't see the forest for the trees. Obtaining these labels demands an enormous amount of time and effort. Berent Baris is investigating ways to simplify this process, benefiting both farmers…

A complete transformation of the steel cycle in the Netherlands with the ultimate goal of a CO2 neutral steel sector by 2050. For this purpose, the Growing with Green Steel program receives €100 million from the National Growth Fund. From Leiden, Professor of Industrial Ecology René Kleijn is involv…

Although there is considerable evidence that nature in the city is beneficial to both people and animals, we still do not have an overall picture of those benefits. To rectify that, a Leiden PhD candidate and a student – armed with a cargo bike – are using The Hague as a life-size laboratory.

Not all sustainable business models have the impact they claim, Leiden researcher Levon Amatuni revealed. Car sharing and phone reuse, for example, have a smaller positive effect than previously thought. Amatuni advises people to ‘pay attention to actual changes in their consumption behaviour rather…

After many years of preparations, CERN has approved a groundbreaking new experiment: the Search for Hidden Particles (SHiP). Physicist Alexey Boyarsky was involved from the start. ‘We know there is physics that’s missing and we aim to find it.’

Does a communal garden provide cool air and warm neighbourly relations? Does an additional row of trees increase biodiversity? These kinds of questions are key in the COMBINED project, on which Leiden scientists and residents of The Hague, among others, can work for six years with 4 million euros from…

Arnold Tukker and Mingming Hu (CML) will look for urban resilience solutions in the Dutch-Chinese ReSURE2 project that received 1.1M euro.

PhD defence

The Landscaping department manages, cares for and maintains all green spaces, road surfaces, waterways and ponds located on University grounds. The Landscaping department also performs work on request.

During an evacuation, gather at the greens next to the Sylvius Laboratory.

During an evacuation, all employees and students gather at the greens near the beach volleyball fields, next to the University Sports Centre.

AI offers opportunities to make your work easier. However, there is also a downside to AI that may have consequences for your privacy and that of your colleagues. On this web page, you will find more information about the responsible use of AI within Leiden University.

The Hortus Botanicus is the oldest botanical garden in the Netherlands. Founded in 1590 and expanded in the centuries that followed, the Hortus is a green oasis in the centre of Leiden. Visitors come for a relaxing stroll through the gardens; researchers come from all over the world to study the famous…

What do you need to record a knowledge clip in the studio? You can find below a checklist of the materials you need to bring to a studio recording. Keep in mind that this checklist depends on the kind of video you want to record. Always discuss the specifics for producing such a video with your video…

The theme Sustainability is one of the five continuous developmental themes in the strategical plan Innovating and connecting – 2022 - 2027 of Leiden University. Making sustainability one of the hot topics.

The Faculty Club is an excellent place to celebrate an inaugural lecture or doctorate. If you are connected with Leiden University, you can use this unique location on Rapenburg for a stylish reception or dinner for your guests.

In case of an adverse event, you may have to evacuate a building as quickly and calmly as possible. Emergency response coordinators will help you evacuate the building.

PhD, Staff

If you want to travel for work to an area with a security risk country or area with the color code orange and/or red, you need prior permission from the university.

Leiden University has policies in place regarding travel restrictions for students and staff within the context of their studies, work or research. The basis of these restrictions are the Dutch Ministry of Foreign Affairs travel advisories.

Our aim with the Humanities Campus is to create a sustainable and attractive campus with ample green spaces and opportunities for interaction, complemented by modern and future-proof facilities. The campus is being developed in stages. On this page, you can find information about the planning, latest…

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Employees of departments participating in the Flexible Working pilot can reserve workstations themselves via SharedDesk. You can reserve a workstation in the office up to one week in advance. If you wish to cancel your reservation, please do so at least 24 hours in advance.

From a vegan community kitchen to a green framework for drug development: sustainability became more visible in everyday campus life at Leiden University in 2025.

Leiden University has taken seventh place in the UI Green Metric, a global sustainability ranking for universities. Almost 1,000 universities from all over the world participate in the ranking.

Leiden University has taken 17th place in the UI Green Metric, a global sustainability ranking for universities. Over 1,400 universities from all around the world took part in the ranking.