The radio telescope LOFAR, with a major contribution from Leiden Observatory, has produced the most detailed radio map of the Universe ever made. Never before have so many cosmic radio sources been captured in a single survey: 13.7 million.

There is something strange about that new student Angela Ignatius. She is brilliant, helpful and always available. She summarises teaching materials, helps with assignments and is even willing to write your thesis for you. But to what extent do you let her? It’s the big question in this – sometimes…

Are international courts effective? Dr Fatou Bensouda, a former Lead Prosecutor of the International Criminal Court in The Hague (ICC), will discuss this issue during her lecture at the Owada Symposium 2025. The ICC’s efficacy depends on the actions of its member states, she says.

Europe’s security suddenly looks uncertain now President Trump has started negotiations with Putin. What does this mean for the Netherlands? What do we need to do?

On International Women's Day (8 March) we take time to consider female emancipation and participation. What does this day mean for Leiden University, and how does it tie in with our aim of becoming more diverse and inclusive? We talked about these issues with Annetje Ottow, who recently became the…

Like many others, Ruurd Halbertsma has had a rollercoaster of a year. His museum, the National Museum of Antiquities (RMO), was closed for a long while because of the lockdown. Visitor numbers picked up again from September, but it the next few weeks will be tense now the hospitals are full again. Halbertsma:…

What sets Leiden University apart from other universities? And what research themes would you like us to showcase to the outside world? Share your ideas in our online consultation over the next two weeks.

Alternative demonstrations were held in Leiden and The Hague on Thursday 14 November after the national protest in Utrecht was cancelled. Leiden University supports these protests, which were organised by WOinActie. Read our live blog of the demonstrations.

This is a difficult time. Above all, for all those directly involved in this horrible case – unacceptable behaviour by a professor and his removal from the University – the case we went public about on 18 October and that has been reported in the media. This is painful and tough for the complainants…

Do you want to provide advice on issues of your own choosing, and help decide on important subjects within the university? If you do, then it’s time for you to stand as a candidate for a faculty or employee council. ‘Standing for election is a good way for you to join in the dialogue. We don’t just…

Many saw the UN Summit of the Future as the moment of truth for the United Nations and its plans for the world. Joris Larik, Assistant Professor of Comparative, EU and International Law, explains the results.

Revelations about unacceptable behaviour and sexual misconduct in the TV and sporting world have rekindled the public debate about a safe environment. At Leiden University we are coming together to prevent unacceptable behaviour and provide proper care and support for victims. According to President…

Annetje Ottow is stepping down as President of Leiden University’s Executive Board on 1 September 2025 after almost five years in the role. She looks back at the highs and lows – and ahead to what’s next.

How do you set up a successful collaboration between science and practice? That was the main theme of the final meeting of a triptych of symposia on how Leiden University can improve inter- and transdisciplinary collaboration.

Because she lives the values she stands for in her work, open and trustworthy leadership are central to Jannemieke Ouwerkerk’s approach. ‘It’s important in academia to want good things for each other.’

Conference

The COVID-19 pandemic forced many staff of Leiden institutes abroad to leave their posts in a hurry. How is the KITLV Jakarta team doing now? Director Marrik Bellen talks about the turbulent times for this Leiden institute and its staff. And can we learn anything from the Indonesian approach?

Annetje Ottow is the first female president of the Executive Board of Leiden University, which means a return to her Alma mater.

After a turbulent Covid year, the well-being of our students and staff has the highest priority. How can we prevent physical and mental health problems? This was the key question at the Opening of the Academic Year in Pieterskerk in Leiden on 6 September.

In a sailboat, a canoe or stowed away on a ship: during the Second World War, many Leiden students tried to cross the sea to join the Allies in Britain. ‘Soldier of Orange’ is the most famous, but who were the other ‘England voyagers’ or Engelandvaarders as they are known?

An impressive 22 research projects by Leiden researchers have been awarded Veni funding from the Dutch Research Council (NWO).

The three parties currently forming a government – D66, CDA and VVD – have presented a new coalition agreement, in which they announce their intention to reverse the substantial funding cuts to higher education. This is encouraging news, although many uncertainties remain. The Executive Board will closely…