The Night of Discoveries will take place on 20 September in the area around Hortus botanicus Leiden, the Old Observatory, Pieterkserk, the Academy Building, Old School, the Faculty Club and the PJ Veth Building.

Why do some people with adverse childhood experiences develop mental health conditions whereas others do not? A Leiden research project is looking for volunteers aged between 18 and 24 to help us understand more about human resilience.

On Monday 25 November at 13:00, students and staff from higher education institutions are protesting at Malieveld against the announced cuts. How do you ensure that you and your students can be there if you should be teaching then, and cannot or do not want to cancel your class?

The rising energy prices cannot have escaped anyone’s notice. They have dominated the news in recent months. As a university, we too face a big challenge as the prices continue to rise. We will all have to do our bit in the coming months, also in view of the climate crisis that we want to help resol…

Leiden University has awarded its prestigious University Medal to Emeritus Professor Lex van der Eb. As a pioneer in genetics and molecular biology, he received this honour for his services to science and his key role in the development of the Leiden Bio Science Park (LBSP).

Leiden University is a member of the Una Europa European alliance. This partnership of 11 research-intensive universities is working to shape the university of the future.

The results of the 2026 University elections are in. Who will represent us on the participation organs?

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.

Personal development

Learn how to use Maileon’s editor and how to follow the editorial guidelines.

An article in Leiden University’s Mare newspaper on 24 September states that the University Council advised against reappointing President of the Executive Board Annetje Ottow. The Board of Governors, deans and Annetje Ottow respond below.

PhD defence

Personal development, Working effectively

Study information

Last year, 15.8% of all employees of Leiden University experienced undesirable behaviour. This is one of the findings of the 2021 Personnel Monitor. ‘That number is far too high. We have to get rid of the taboo on raising this issue and addressing offenders,‘ says Martijn Ridderbos, in an open and…

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

Didactics

Didactics

Didactics

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.

Conference, D&I Event

Workshop

Management