An all-optical transistor, a molecule-sized sensor and a new kind of single-photon source for quantum communication. All dreamed applications of fundamental physics that are one step closer thanks to Robert Smit. On 12 June, he defended his PhD thesis with distinction.

Three fundamental research projects at Leiden in physics, chemistry and medical science have received funding from the Dutch Research Council (NWO). They involve research on magnetic fields in the universe, the role of myeloid cells in cancer immunotherapy and the evolution of ancient proteins.

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…

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.

It’s Circular Economy Week, from 1 to 6 February. But what is it that makes an economy circular? And just how circular is our university? René Kleijn, lecturer on the honours class Circular Economy: from challenge to opportunity, explains.

Hydrogen can help to solve the climate problem. At least, if we start producing it in the right, clean way. Leiden researchers mapped out the global environmental impact of hydrogen production and looked ahead to 2050. They published their work in Energy & Environmental Science.

In July, Leiden will be hosting the EuroScience Open Forum conference. Humanities scholars from Leiden will make use of the opportunity to stress the importance of art in science. ‘Artists have the ability to show the consequences of science.’

If European countries rely solely on technological advances, they won't be able to limit global heating to 1.5 degrees. Households will also need to change their lifestyles. This 'inconvenient truth' is the result of calculations done by industrial ecologist Stephanie Cap. ‘It's not a popular message,…

The renovated Arsenal building, part of the Humanities Campus, has been in use since April 2020. The building was officially opened on Monday 13 June by Martijn Ridderbos, Vice-Chairman of the Executive Board, and Mark Rutgers, dean of the Faculty of Humanities.

Astronomers led by Leiden PhD candidate Richelle van Capelleveen have, for the first time, discovered an exoplanet that has carved a bright gap in the protoplanetary disc around its star. This rare observation provides new insights into how young planets shape their surroundings.

How can we supply the growing world population with sustainable energy? At Laurens College in Rotterdam, Prof. Marc Koper speaks with the students about the crucial role of chemistry in the energy transition. Guest classes like this are a good way for school students to learn about the academic world,…

The Netherlands is embroiled in a complex nitrogen crisis. Berent Baris wants to use his NitroGenius game to demonstrate the complexity of this crisis.

Are we on the right track towards a circular economy in 2050, with fully renewable energy technology and circular construction? The CML of Leiden University, together with the Netherlands Environmental Assessment Agency (PBL), TNO, Utrecht University and RIVM, is investigating what is needed to achieve…

How much energy and greenhouse gas emissions can Dutch homes save? Xining Yang uses Leiden as an example and shows with his research how enormous the impact can be. At least, if we work harder on becoming more sustainable. Based on the models he developed, Yang will receive his doctorate on 28 June.

‘Yamila Miguel brings along immense enthusiasm that sparks over to the students in the lectures,’ her students say about her. ‘She inspires us as scientists-to-be.’ The astronomer teaches master’s students with great passion and interactivity about exoplanets. She has been nominated for the faculty…

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…

After hard work in the lab, Chemist Tirong Guo has developed a group of materials that provide a stable and efficient foundation for artificial photosynthesis. Will this enable the large-scale production of hydrogen and other useful compounds in the most sustainable way possible? Guo will defend her…

From the effects of hormone fluctuations in women via the interior structure of giant planets to the prehistory of the languages: six Leiden researchers have been awarded a Consolidator Grant by the European Research Council.

The Faculty of Science launched the new Academic Year on 21 September with a special We Are Science talk show. Dean Paul Wouters starred in his role as talk show host and received a wide variety of guests.

The availability of natural resources, the energy transition, the importance of circularity and our dependence on China. This and more is what Professor of Industrial Ecology René Kleijn's inaugural lecture is about.

From a meaningless block of plastic to an advanced component that contributes to the energy transition. The technicians and scientists of our faculty think it out in detail and make it a reality. This special project shows that they need each other.

How do molecules originate and evolve in space? And how does that ultimately determine the chemical composition of planets and their atmospheres? The Dutch Astrochemistry Network (DANIII) receives 1.6 million euros from NWO to find out. A large group of Leiden astronomers and chemists is contributing:…

Sustainability, health and wellbeing are key factors during the coming renovation of the iconic South Cluster of the Humanities Campus. The conversion of the original seven ‘houses’ to create a single spacious, light and attractive environment under a glass roof will earn an Excellent Level qualification…

The Sustainable City Lab The Hague will be a hub that connects organisations in The Hague that work on sustainability with the research and teaching at Leiden University. ‘We’re going to set to work on complex sustainability challenges in our own backyard,’ says project leader Eefje Cuppen.

On Friday 3 February, all new incoming exchange students for the Spring semester were invited to attend their own Faculty’s introduction session.

Light, open and green: a description that fits the new, renovated location of the Faculty of Humanities. The official opening of the Herta Mohr Building took place on 8 October, and it has many remarkable features: for example, recycled ‘mushroom columns’, a pedestrian bridge to the University Library…

An international team of astronomers led by Ardjan Sturm of the Observatory has made the first two-dimensional inventory of ice in a planet-forming disk of dust and gas surrounding a young star. The researches, including Melissa McClure, used the James Webb Space Telescope and publish their findings…

Lecture, Tuesday Talk

PhD defence

How has evolution shaped our curiosity? And how does that curiosity ensure that we now have the technological ability to discover whether we are alone in the universe? This was all covered during the celebration of Leiden University’s 449th Dies Natalis.

Lecture

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…

The new government needs to look further ahead, says environmental scientist Rutger Hoekstra. ‘We keep pushing forward big dossiers like demographic ageing, climate and migration. Even though we know they play a big role in our future.’ Hoekstra therefore hopes that the new coalition agreement will…

What can you do about sustainability in your immediate living environment? On Thursday afternoon, April 14, the Museum Volkenkunde in Leiden was filled with policymakers, researchers, entrepreneurs, citizens, students, and even the mayor of Leiden. Leiden University and the Association of Dutch Municipalities…

Professor Marc Koper researches how you can use electrical energy to make or break chemical bonds. He has just been awarded a Spinoza Prize, the Netherlands’ highest personal science award, for his fundamental research into how this form of electrolysis works.

Lecture

Lecture, Harold Linnartz Astrochemistry Prize lecture

PhD defence

Should Leiden University cut its ties with the fossil fuel industry forthwith? This was the main question in a debate between students and staff. The answer was clearer for some than for others.

PhD defence

Lecture, Astronomy on Tap

Lecture, YAL & Studium Generale

Hans van den Berg, CEO of Tata Steel NL, is in the eye of the storm. He continues to believe in connection, debate and knowledge that will make green steel possible.