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…

‘We have to have accountability.’ That was Roberta Metsola’ for her audience on Thursday evening. The President of the European Parliament had come to the Wijnhaven building to speak with students.

When designing public spaces, noise is often a neglected issue. Architects and urban planners know little about it; noise experts see it mainly as a problem that should be solved simply by reducing the volume. University lecturer Andrea Giolai (LIAS), researcher Kevin Toksöz Fairbairn (ACPA) and Professor…

Protostars, data science, and the James Webb Space Telescope—Adriaan Janssen’s curiosity knows no bounds. As a double bachelor’s student in Physics and Astronomy, he has truly found his calling, underscored by his nomination for the title of Leiden Science Young Talent 2024.

The tenth Europa Lecture was delivered by Corinna Wissels, State Councillor at the Administrative Jurisdiction Division of the Dutch Council of State, deputy justice of the Dutch Trade and Industry Appeals Tribunal and member of the EU-UK Withdrawal Agreement arbitration panel.

An international team of astronomers, led by Will Rocha of Leiden Observatory, using the NASA/ESA/CSA James Webb Space Telescope have discovered that the key ingredients for making potentially habitable worlds are present in early-stage protostars, where planets have not yet formed.

In the podcast EU Scream, a non-for-profit organization based in Brussels, Martijn Nouwen tells about his research into communications about European tax rulings.

The fact-checking initiative Nieuwscheckers has won the Dutch round of the European Citizens Award. This prize is awarded annually to projects and initiatives that deliver an exceptional performance within the EU.

Discover how skateboarding transforms cities by reading anthropologist Sander Hölsgens' research. Learn about his two new books exploring skateboarding as a sensory experience and powerful learning tool within areas as diverse as therapy, care, parenting and education.

Eric De Brabandere, Anna Marhold and Nico Schrijver of the Grotius Centre for International Legal Studies have been included as arbitrators and Trade and Sustainable Development experts in the newly established European Commission pool in the framework of EU free trade agreements enforcement.

After ten years and one day, Leiden Observatory has a new director. As of 1 September, Ignas Snellen will set the course for the astronomical institute. In this interview, you will get to know Ignas. Or at least a little. That is why we gave him five dilemmas and asked the people around him who he really…

A star does not just appear in the sky overnight. Its creation takes tens of thousands of years. Twenty years ago, astronomers took a picture of a star in its birth phase. The James Webb Space Telescope (JWST) could now capture that same star in much greater detail. This does not only provide beautiful…

Connecting space to society and gaining problem-solving experience: that’s the goal of LDE Space & Society, a new honours programme for bachelor’s students in Leiden, Delft and Rotterdam. What does the programme look like? And what do students hope to learn? We visited a kick-off session full of exc…

What started as pioneering work, has evolved over decades to become a renowned institute in 2025 with an internationally acclaimed master's programme. 'Almost everyone involved in the aviation and space sector knows us in Leiden.'

Heritage Quest is a large-scale citizen science project in the field of archaeology that allows anyone to contribute to scientific research. It is the first large-scale archaeological citizen science project in The Netherlands and one of the few of its kind in the world. As part of the Cultural Heritage…

On 10 December 2024, the European Parliament played host to an insightful presentation of ‘Protecting Democracy in Europe: Pluralism, Autocracy, and the Future of the EU’, the new book by Tom Theuns, Assistant Professor at Leiden University. Hosted by MEP Thijs Reuten (PvdA/S&D) and his team, the event…

How do you detect life on a planet light years away? During her PhD research, astronomer Willeke Mulder worked on an instrument to detect such signals – culminating in an experiment from a hot air balloon.

Facility

The Dutch asylum application centre in Ter Apel is overburdened, an issue that is currently a prominent feature in the Dutch media. In podcast De Verbranders, PhD students Neske Baerwaldt and Wiebe Ruijtenberg engage in dialogue, and use different angles to examine themes related to migration, borders…

SRON, the Netherlands Institute for Space Research, is holding an open day on Sunday 25 September. It has had a branch at the Leiden Bio Science Park since 2021 and works closely with Leiden University.

Social

During the second episode of this Leiden Law podcast, hosts Juli Wentholt and Ishana Badhai will talk with Tanja Masson-Zwaan about the latest developments in Space Law.

A team led by Leiden University in the Netherlands and the National Radio Astronomy Observatory have, for the first time, robustly detected semi-heavy water ice around a young sunlike star. In this ice, some of the ordinary hydrogen atoms have been replaced by deuterium, a heavier variant of hydroge…

How can The Netherlands, France and Germany cooperate more closely on issues such as European security and defence. Join the kick off of The European Strategic Dialogue Series, an initiative by the Institute of Security and Global Affairs and its partners in France and Germany. Joachim Koops tells more…

Nikki Ikani, Assistant Professor Intelligence and Security at the Institute of Security and Global Affairs (ISGA), has recently published her latest monograph 'Crisis and change in European Union foreign policy' with Manchester University Press.

Finance

A special type of mirror to reflect X-rays has more possible applications than space research. Targeted radiation therapy for cancer, for example. Next to his full-time job, physicist David Girou mapped out the possibilities. He will receive his PhD on 14 June.

Suzanne Kingston will be officially sworn in in mid-January. She graduated from the Leiden Advanced LLM European and International Business Law (EIBL) in 2000.

Researchers have discovered the most distant Milky-Way-like galaxy yet observed. Dubbed REBELS-25, this disc galaxy seems as orderly as present-day galaxies, but we see it as it was when the Universe was only 700 million years old. This is surprising since, according to our current understanding of…

Students on the Adv. LL.M. Air and Space Law reacted quickly to the news of Ukrainians fleeing the war in Ukraine to neighbouring countries. Filip Draba, who is from Poland, collected donations from the class and, together with additional contributions from family and friends in Poland, he amassed €…

Professor of Islam and the West Maurits Berger wants to use citizen science to answer this question. On the futureofislam.eu website, he is inviting European Muslims to complete an anonymous survey about how they see their future and the role of Islam in this. He will present the first findings at the…

How can groundbreaking research help Europe tackle the huge challenges it faces? At the launch of the Leiden Europe Hub, academics and policymakers discussed this in the heart of European democracy: the European Parliament.