PhD defence

A particular group of counter protesters have been sighted at numerous Black Lives Matter protests that were held in the United States. An extreme right movement known for its characteristic Hawaii Shirts and heavy weaponry that calls itself the Boogaloo Boys. Which is cause for concern among the American…

Representatives of the Faculty of Archaeology recently traveled to the Caribbean island of St. Eustatius to repatriate human remains. The remains, originally excavated in the 1980s, will eventually be reinterred on the island.

SEO en de Universiteit Leiden hebben de invoeringstoets van de Wet bescherming klokkenluiders (Wbk) uitgevoerd. Het doel van deze wet is opm melders van misstanden te beschermen. Op 3 maart is het rapport verstuurd naar de Tweede Kamer.

25 years ago the Faculty of Archaeology at Leiden University was founded. In the academic year of 2022-2023 several lustrum activities will be organised to celebrate this happy occasion. The year was kicked off with a vibrant party on September 8, inviting staff, students, and alumni.

Conference

What do you build with when trees are scarce and winters are brutal? For hunter-gatherers living in current-day Ukraine some 18,000 years ago, the answer was simple: mammoth bones.

On 7 and 8 November 2024, the International Centre for Counter-Terrorism (ICCT), the Institute of Security & Global Affairs at Leiden University, and The Netherlands’ National Coordinator for Security and Counter Terrorism (NCTV) partnered to host a ‘Blue-Sky’ Terrorist Exploitation of Artificial…

Rotterdam is an extreme example of inequality in the Netherlands. There are huge health and life expectancy differences between neighborhoods. Good access to healthcare and education Isn’t a cure-all, say inequality economists Lieke Beekers and Hans van Kippersluis

How do atoms and molecules end up forming planets? That's what astrochemist Julia Santos studied during her PhD. She discovered the dominant process behind the formation of methanol in space – a finding that surprised the entire field.

Hoogleraar Radicalisation Studies Tahir Abbas wil mensen er bewust van maken dat radicalisering voortkomt uit hoe wij als mensen samenleven

Terrorism expert Bart Schuurman has been appointed professor. As a researcher and lecturer at ISGA, he has witnessed the terrorist threat evolve and broaden. 'How can we explain these shifts and protect our society against them? That is what I want to focus on more,' he says.

‘Countering violent extremism – the international deradicalization agenda’ is the name of the book Tahir Abbas published last month. In this interview the associate professor in Terrorism and Political Violence at ISGA tells about the backgrounds and goals of the book.

Over the past five years, medical anthropologist Annemarie Samuels has studied palliative care in different parts of the world. Over the next five years, she will focus on end-of-life care in the Netherlands. 'Everyone has the right to good care at the end of their life, but what that means differs…

In 2022, Leiden will be the European City of Science. University lecturer Jaap de Jong has created special assignments for the journalism master's students to celebrate this: they will go into the city to visualise knowledge from the city.

Is it possible to measure subtle oscillations caused by dark matter moving through the earth? A Dutch-American physicist team have discovered a new route toward what could be the first-ever measurement of ultralight dark matter. They suspended a microscopic magnet inside a superconducting enclosure,…

Evaluations of a most challenging year to both staff and students in terms of teaching and education support have turned out remarkably well. Although we had to switch to online education almost overnight, we pulled it off!

Your toddler refuses to eat vegetables, your child is being bullied at school, or you’re simply overwhelmed by everything on your plate. How can parents manage these situations effectively? During this Week of Parenting, our researchers and lecturers share practical advice for parents.

Tahir Abbas was named full professor of radicalization studies by the Executive Board. This chair, according to Abbas, is an excellent opportunity for ISGA to broaden its current focus on terrorism and political violence. Abbas was interviewed about his ambitions, writing as a form of relaxation, and…

The Executive Board of the University is shocked by the unannounced demonstration that took place Thursday afternoon at the Wijnhaven location in The Hague relating to the situation in the Middle East. Without first requesting permission, a large group of students and staff held a gathering there. Moreover,…

Buying chocolates as a sign of love, getting the best deals on Black Friday and putting on a spooky costume for Halloween. In recent years, these holidays and traditions have taken off in the Netherlands, even though they originated on the other side of the ocean. Why are we so excited about American…

Minuscule elementary particles from space colliding with Earth can give us an insight into the distant objects they come from. But first, you need to know how to catch them. With a Vidi grant from NWO, researcher Sjoert van Velzen will 'hunt' for neutrinos coming from exploding black holes.

Five projects with researchers from Leiden University have received a grant from the Dutch Research Council (NWO) to build or upgrade existing research facilities.

A number of our PhD candidates has done their defense in the first half year of 2021. Our institute is extremely proud of our young doctorates who have accomplished this task with their hard work. Congratulations on your achievement. We wish you a successful career and a bright live.

The night side of exoplanet WASP-43b, to the surprise of astronomers, does not appear to contain methane. It is likely that extreme winds do not allow enough time for methane to form in detectable amounts. This is the conclusion of an international team of scientists, with Leiden and Amsterdam contributions,…

Wars, climate change and the effects of covid have caused a global decline in children’s well-being. In her inaugural lecture Ann Skelton, Professor of Children’s Rights in a Sustainable World, points to the disastrous effects of multiple interacting crises.

17 November is all about high tech. From consultations with ASML and a component for the world's largest telescope to our high-tech education. Oh right, and a conversation with the new rector magnificus.

On Tuesday November 25, 2025, Prof. dr. Sarah Cramsey travelled with students from her masters seminar on “New Approached to the Holocaust in Central and Eastern Europe” taught at the History Institute to Amsterdam for a unique opportunity. There, Ms. Lotte Sophie Groenendijk, an alum of the History…

Professor Mirjam de Bruijn will research digital warfare in the North African Sahel with an NWO Open Competition grant. The focus of the research will be on Fulani social networks in war and cultural violence.

On 1 October 2024, Dr Jiska Engelbert was appointed as professor by special appointment on the Ien Dales Chair ‘Government as an Employment Organisation’. Her focus is on leadership in digital transitions, digital innovations, and the transformation of public services, with particular attention to local…

Social

The Executive Board appointed Sanneke Kuipers as full professor effective January 1, 2022. Her chair is Crisis Governance. She combines this chair with her position as education director of ISGA, the Institute of Security and Global Affairs. A conversation about working 24/7 in crisis management, her…

Imagine: you’re seeking asylum in the Netherlands due to your sexual orientation or gender identity. The immigration authorities might question you about your sexuality. PhD candidate Elias Tissandier-Nasom, who is researching asylum applications submitted by LGBTQI+ children, explains that the process…

Psychedelic drugs like magic mushrooms and LSD are embraced by some and seen as lethal by others. Cognitive psychologist Michiel van Elk delved into the world of psychedelic drugs and wrote a surprisingly sober book about them. ‘Without first-hand experience my story wouldn’t be complete.’

Imagine no one in the Netherlands would eat animal products anymore, what would happen? And would it contribute to more climate justice? That is the theoretical exercise that environmental scientist Jan Willem Erisman and landscape architect Berno Strootman are taking up. 'Sometimes you have to think…

Not everything that comes close to a black hole is swallowed by it. Black holes can also hurl material away, and that chance turns out to be considerably bigger than previously thought. Martijn Oei's accidental discovery and his subsequent research on it earned him a cum laude promotion on 12 Decemb…

Recently, in the midst of coronavirus situation, Professor Corinne Hofman and her team became part of the NWO project Island(er)s at the Helm. Both the application process as well as the start of the project were challenged by the limitations set by Covid-19. ‘As a preparation we travelled through the…

Dutch politics is becoming increasingly polarised, and forming stable governments seems more difficult than ever. In the heat of the election race, a psychologist and a historian offer cool-headed advice.

With the aid of artificial intelligence (AI), care professionals at the LUMC (Leiden University Medical Center) are able to calculate quickly and accurately whether a coronavirus patient has suffered serious lung damage. They do this by putting a CT scan through the AI software of the CAD4COVID-CT p…

A suitcase as a messenger of quantum science. That is the idea behind QuanTour, a project connecting researchers from 12 European universities. In December, the suitcase landed in Leiden. A month later, it is time to pass the baton to Copenhagen. But what happened to it in Leiden?

The challenge is considerable, but so is the satisfaction when it succeeds: creating complex sugar molecules that play a role in biology.

Cookware handles, electrical plugs, brake pads. Unlike other plastics, these ‘thermosets’ cannot simply be melted down and reshaped, making them difficult to recycle. Chemist Roxanne Kieltyka and her team are now exploring a way to make these materials recyclable, potentially transforming the way we…

The city of Leiden is enriched by a dense infrastructure of knowledge institutes, with a uniquely strong focus on health and well-being. This gives Leiden "an extremely good starting position to become the healthiest city in the Netherlands," according to Fleur Spijker (Alderman for Economy, Knowledge,…

The Young Star Award is awarded annually to a student who completed his or her bachelor’s thesis at the Faculty of Science of Leiden University. The prize was installed by Prof. Ewine van Dishoeck in 2019 and consists of a prize of 2,500 euros. Each of the bachelor’s programmes at our Faculty may nominate…

At the request of the Dutch Parliament, Professor Marielle Bruning, Dr Kartica van der Zon (Dept. of Child Law), Professor Lenneke Alink and Dr Sabine van der Asdonk (Education and Child Studies) have produced a fact sheet on the placement of children in care in the Netherlands.