An international team of scientists, including Xander Tielens of Leiden Observatory, has used space telescope Hubble and the ALMA observatory to show that UV radiation from massive stars can prevent planets from forming. The researchers publish their findings on 1 March in the journal Science.

Life cycle assessment (LCA) reveals the total environmental impact of products or production processes, and EU rules are going to make this even more important.

A study of the International Union for Conservation of Nature has identified tree species native to Indonesia’s Kutai National Park that are resilient to climate change. The species support threatened East Bornean orang-utan populations; therefore, the study recommends their use in reforestation efforts.…

It came as a shock to many people: one million plant and animal species are threatened to become extinct. But this number isn’t the most relevant aspect, argue Alexander van Oudenhoven, Koos Biesmeijer and three other experts in Dutch newspaper Trouw. ‘It is more important to realise that the fate of…

A wind turbine near your home? The energy transition is not seen as just by all parties concerned. It’s essential to involve local residents, argues Emma ter Mors, social psychologist. As a researcher, she focuses on identifying factors that influence public acceptance of energy technologies. Isn't…

It’s better to cut our nitrogen emissions now than to solve the consequences later at great expense. That’s the lesson we can learn from the Dutch nitrogen crisis, according to nitrogen expert Jan Willem Erisman. In Science, he shares this lesson with other countries. According to Erisman, we should…

In January 2020, Marja Spierenburg joined the FSW as the new Professor of Anthropology of Sustainability and Livelihoods. Let’s get to know her. ‘All my research is basically about nature conservation. I look at areas like national parks, but also at measures aimed at increasing the sustainability of…

From museum collections to artificial intelligence: Leiden University has selected eight research programmes that will receive extra funding

Tobias Müller, post-doctoral researcher in the field of Terrorism and Political Violence at ISGA, writes how together, religious groups and scientists can be a powerful force for a liveable planet.

How do you set up successful interdisciplinary collaborations? That is the central question of a Leiden symposium. On 6 June, we look at cooperation and decompartmentalisation between public institutions. The language of the symposium will be Dutch.

Conference

To study how planetary systems come into existence we study much younger systems still in formation.

An international team led by Leiden astronomers has taken the first-ever image of a young, Sun-like star accompanied by two giant exoplanets. The researchers used The European Southern Observatory’s Very Large Telescope for this, known as ESO’s VLT. Images of systems with multiple exoplanets are extremely…

Having lectures on sustainability when you're a first-year student of Law, or a course on climate change when you're studying Public Administration may sound odd, but that is just what Associate Professor in Environmental Sciences Thijs Bosker wants to see happening. Together with his colleague Paul…

How can we organise society so as to keep our planet habitable for us and for all other life forms around us? To answer this question, Leiden researchers collaborate across disciplines, from biology to data science, and from environmental economy to archaeology.

Circumstellar discs are the reservoirs of gas and dust that surround young stars and have the potential to become planetary systems.

The whole world gets raw materials from Latin America, but at the expense of nature. Håvar Solheim researches the role of organised crime in this environmental crime and Soledad Valdivia researches sustainable urban initiatives in Latin America. What do these university lecturers think the future of…

Lecture

Dr. Katharine MacDonald (Faculty of Archaeology) sketches the background to a recent paper in Science Advances, co-authored by her and other members of the Liveable Planet team.

How can you persuade researchers who are used to conducting research within clearly defined disciplines to adopt an interdisciplinary approach? Newly appointed distinguished professor Arnold Tukker explained.

Our dear colleague and friend Kathy MacDonald passed away unexpectedly on August 9th, 2022, a few days after her 46th birthday. Her sudden passing came as a tremendous shock to her colleagues and friends at the Faculty of Archaeology and to colleagues and former students both in The Netherlands and…

The European Project SUNRISE, ‘Solar energy for a circular economy’, has been selected as one of the six Coordination and Support Actions (CSA) within the Horizon 2020 programme of the European Commission. Funded with 1 million euros, it will set the base for a large scale European research project.…

Nienke van der Marel has been awarded the New Horizons Prize in physics for her pioneering research on planet formation. This prize is given to young, promising researchers in physics or mathematics. The astronomer and her colleagues found the first observational evidence for 'dust traps' in disks around…

Your local city park may be improving your health, according to a new paper led by Leiden environmental scientist Roy Remme. In Proceedings of the National Academy of Sciences Remme and his colleagues describe how access to nature increases people’s physical activity—and therefore overall health—in…

Connecting worlds, enhancing research and teaching, and providing innovative solutions to complex social issues: that is the idea behind interdisciplinary research. In that respect, a huge amount happened at Leiden University in 2023.

Many of the challenges of our time are too complex to be resolved within the confines of a single discipline. Leiden University is a broad-based university where an incredible number of research fields converge. That makes us the ideal breeding ground for, and practitioners of, interdisciplinary research…

Promotor: C.U. Keller, Co-Promotor: F. Snik

79 students, 15 organisations, and 16 projects: within the master’s programme Governance of Sustainability, diverse groups of students worked together with organisations to tackle sustainability challenges. In this blog, Annemiek de Looze reflects on how the power of their transdisciplinary approaches…

Lecture

On the 6th of December, Buurtlab 070 and the Leiden University Green Office (LUGO) hosted an event at the Spinozahof in the Stationsbuurt, bringing students and local residents together to explore energy (in)justice through the serious game Sunjust.

The Executive Board has appointed Ineke Sluiter and Arnold Tukker as distinguished professors at Leiden University.

It is the fifth year in a row that the Faculty of Archaeology is placed in the top ten of archaeological institutes worldwide. The QS World University Rankings by Subject looks at criteria like academic reputation and citation ratios. Dean Jan Kolen is pleased with this news: 'In recent years, the Faculty…

This research focuses on the distribution of chemical elements in protoplanetary disks, the birthplaces of planets. These disks form around young stars and contain gas and dust, from which planets grow. Ice plays a crucial role in planet formation, aiding the clumping of dust particles and influencing…

Connecting scientific fields, enhancing research and teaching, and providing innovative solutions to complex social issues: that is the idea behind interdisciplinary research. What did the university achieve in 2024? A small sample.

Are there other planets like the earth, and will there also be life? Astronomers study planets around stars other than the sun, with the aim to find out what kind of gasses their atmospheres are made up with.

Over the past years it has been discovered that the population of extra-solar planets is large and diverse.

Research at Leiden Observatory spans the full width of modern astrophysical enquiry. It is based on observation, theory, simulation, and experiment. Two broad clusters characterize the ongoing research. Within each theme, researchers carry out their personal and specialized research programme. The two…

This thesis is an experimental study of the UV irradiation of the interstellar ice analogues, relevant for the different stages of the star and planet formation sequence.

PhD defence

Dishoeck

Until the 1990s, the only known planets were those in our Solar System. Three decades later, several thousand exoplanets have been discovered orbiting stars other than the Sun, and substantial efforts have been made to explore these strange new worlds through spectroscopic analyses of their atmosphe…

More than 5,000 exoplanets have been found over the past couple of decades. These exoplanets show a tremendous diversity, ranging from scorching hot Jupiters, common super-Earths, to widely separated super-Jupiters on the planet/brown dwarf boundary.

Tell the truth about sustainability, become climate neutral by 2025 and safeguard democracy within the University. These are, in short, the demands of a petition by University Rebellion, a subgroup of the Extinction Rebellion movement. On 19 November they visited all Dutch universities, including Le…

PhD defence

PhD defence

In Germany, the United States and even in Vietnam: all over the world, the Leiden discovery of the birth of two planets was shared. Astronomer Sebastiaan Haffert and his team were able to record multiple planets in the making for the first time and published their findings in Nature Astronomy. A unique…

Today, humanity produces sufficient calories, in theory, to feed the 7.7 billion people on the planet: the amount of food produced per person on the planet has gone up more than 40% since the 1960s. Yet, ironically, the prevalence of undernourishment – which had been declining for decades – has started…

A large diversity of exoplanetary systems has been found, but it is still unclear what drives this diversity.