The university's CO2 footprint - a visual representation of Leiden University's environmental impact - is calculated every year. The CO2 footprint for 2020 shows a striking break in the trend in terms of energy use, mobility and waste.

The University's CO2 footprint has once again decreased. This is the conclusion of the 2022 Sustainability Report. The report also concludes that steps have been taken to integrate sustainability into Leiden University education and research.

Leiden University continued to reduce its carbon footprint in 2021 by being more careful with natural resources and making structural reductions to its energy consumption. This is what it says in the Sustainability Report 2021.

The University has established an Environmental Policy Plan, which sets a number of ambitious goals to reduce its direct environmental impact and CO2 footprint and to raise staff awareness of sustainable and eco-friendly operations.

PhD defence

If you go on a business trip, you are entitled to reimbursement of your travel and subsistence expenses. Read more about reimbursement and planning business trips.

You are entitled to an allowance for your commuting expenses. The amount of your commuting allowance depends on your means of transport and the number of kilometres.

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On the secure platform LUCA (Leiden University Cognitive Agent), you as a Humanities teacher have the opportunity to experiment with conditioning specific chatbots for the students following your courses.

How to take ownership of your career? To find out, students from ‘Design Your Career as a Climate Change Maker’ visited a farmer who has done just that. They learned from him that it’s never too late to start working on something you believe in.

We provide answers here to some frequently asked questions about collaborations with the fossil fuel industry.

As Vice President of the Executive Board, Timo Kos is responsible for finance, general HRM policy, ICT, real estate, facility services, and security. He is also the point of contact for Campus The Hague.

Joanne Mol is Assistant Professor at the Faculty of Archaeology.

After years of hard work, Urban Studies graduates were presented with their diplomas. How do they look back on their studies? And what can we expect from them in the future?

Christoph Keller is a full Professor of Experimental Astrophysics at the Leiden Observatory. His research centers around polarized light.

Jarle Brinchmann has a Bachelor of Science degree and a Master of Science degree in Astronomy from the University of Oslo. He obtained his PhD at the University of Cambridge with his thesis

Joop Schaye is a Full Professor at Leiden University. His research focuses on the formation of galaxies and the intergalactic medium (IGM).

Matthew Kenworthy is an Associate Professor at the Leiden Observatory. His research interests are in searches for extrasolar planets and the techniques that can help us find them, such as coronagraphic optics and point spread function reconstruction techniques.

Xander Tielens is an emeritus professor at Leiden University. His research involves Polycyclic Aromatic Hydrocarbons (PAH molecules). He was one of the first people to acknowledge the importance of these molecules in the universe. In 2012, Tielens was the most cited astronomer of The Netherlands and…

Ignas Snellen is a Full Professor at Leiden University. His main area of research is extrasolar planets.

Koen Kuijken is a Professor at the Leiden Observatory since 2002, carrying out research on galaxies and cosmology, particularly regarding the distribution of dark matter. From 2007 until 2012 he was the Scientific Director at the Leiden Observatory, before stepping down to return to full-time research…

If your work allows it, you can work partly from home and partly at the University. How this combination of working from home and at the University will turn out for you depends on your own working activities and situation and those of your team. This means that tailor-made solutions are needed.

Leiden University provides employees with all the necessary facilities to work from home efficiently and comfortably. Here you will find more information about software, network connections, and setting up your workspace, as well as answers to questions such as: How do I access my files from home? How…

You can apply for an exemption from parking fees when you demonstrably disabled or when you have to park on different parking lots for your commute.

Leiden University considers it important to help employees whose contract is coming to an end find a new job. Depending on the duration of your employment and your personal needs, we offer different kinds of support, from career advice to workshops on successful job interviews.

Angelika Koch-Low is University Lecturer Premodern Japanese History and Culture at the Leiden Institute for Area Studies. She specializes in Edo-period (1600-1868) culture and language, with a particular focus on the history of genders/sexualities and history of medicine.

Chams Bernard is a guest researcher at the Leiden University Centre for Linguistics.