From spiders in the bathroom to mice in the kitchen, we share our homes with far more species than we realise (whether we like it or not). Researchers at Leiden University and the University of Helsinki are collecting stories about how people live alongside these non-human housemates.

Members of our research team give different types of presentations and lectures.

Anne Heyer is an Assistant Professor in modern history with a research interest in the ideas and practices of political participation in different European countries (1800-today). She works on political parties, populism, social movements and democracy in Europe (Germany, Netherlands, Britain and Spain).…

Alan M. Sears is a lecturer and the academic coordinator of the Advanced LL.M. in Law and Digital Technologies. He has been affiliated with eLaw - Center for Law and Digital Technologies since April 2018.

Afshin Ellian is Professor of Jurisprudence.

Assistant Professor Daan Weggemans researches contemporary and digital security, cybercrime, extremism and conceptual thinking at Leiden University’s Institute of Security and Global Affairs (ISGA).

On Sunday 28 October, the annual open day of the Old Observatory in Leiden takes place. During this day everyone can visit the Old Observatory for free and enjoy activities in this historic building.

On Tuesday 24 September the Marengo trial, also known as the trail against the so-called Mocro Maffia, continued behind closed doors after the fatal shooting of barrister Derk Wiersum. The main suspect is Ridouan Taghi. He is believed to be residing abroad along with several accomplices.

The university has been shaping the city of Leiden for 450 years. A brief history of the university buildings that have helped define the city.

In the summer there are three big introduction weeks for new students – EL CID, HOP and OWL – but students also begin their studies in Leiden or The Hague halfway through the year too. International students, for instance, who are coming for on an exchange for a few months. They got to know the University…

The strangest things come out at night. This is the motto of the Leiden Museum Night due to take place on 28 May. Leiden University is once again playing a key part.

This event is in Dutch. De Verenigde Naties hebben 11 februari uitgeroepen tot International Day of Women & Girls in Science. De Universiteit Leiden viert deze dag met een open publieksevenement met vrouwelijke topwetenschappers van haar bètafaculteit. Iedereen is welkom vanaf 13:30 uur in het Kamerlingh…

Het NIMAR is een instituut van de Universiteit Leiden dat studenten van verschillende studierichtingen de mogelijkheid biedt om zich te verdiepen in de Marokkaanse cultuur.

Assistant professor Political Philosophy Dorota Mokrosinska has received the ERC Starting Grant for her project Democratic Secrecy: A Philosophical Study of the Role of Secrecy in Democratic Governance. The project, running from 2015 to 2020 is funded by the European Research Council

A European team of astronomers, led by Leiden-based researcher Konstantinos Migkas, has uncovered a large filament — a long, thread-like structure — of hot gas connecting four clusters of galaxies. This filament is made up of what scientists call the warm-hot intergalactic medium.

The last names for the future European Commissioners were made public at the beginning of September 2019 and also which candidates have been put forward for the new European Commission by the different member states.

An international team of astronomers has shown that a white dwarf and a red dwarf orbiting each other every two hours are emitting radio pulses. Through the discovery, astronomers now know that the monopoly on bright radio bursts is not solely held by neutron stars. The team of international scientists…

Antique wooden oars, hard-fought medals and iconic photos from rowing history. An exhibition at Oude UB spotlights key figures and moments from the 145-year history of Njord Royal Student Rowing Club.

The Economic Community of West African States (ECOWAS) has formally approved the withdrawal of Niger, Mali and Burkina Faso from the regional body. The approval comes just days after President Bola Tinubu promised German President Frank-Walter Steinmeier that ECOWAS would handle the three countries'…

Nematic liquid crystals form the key ingredients of most tv screens. The active version of these complex fluids forms a useful model for physicists to research the responses of active matter—like bacteria or traffic flows—to mechanical and geometrical cues. An international research team publishes their…

During the week of 15 November, Little Amal, the larger-than-life doll visited The Hague. Naturally she received a warm welcome by Leiden University during her visit. Little Amal (art project The Walk) was invited by Amare.

On Monday 31 October the Europa Instituut had a special guest lecture by not one, but sixteen leading Russian Human Right Defenders. The Leiden Law School was very happy to host the Russian delegation, at the initiative of the Dutch Consulate General in St. Petersburg.

Leiden University and Stadslab Leiden invite you to improve the Leiden and The Hague environment with 450 extra trees – a living reminder of 450 years since the Relief of Leiden and the foundation of Leiden University.

A record number of students are due to part in the EL CID introduction week starting 15 August. For five days, first-year students from Leiden University and the Hogeschool Leiden will get to know one another, the city, their study programme and student life in Leiden.

Over poep, pies en de beerput

The winners of the JSVO teaching prizes for academic year 2020-2021 were announced at the opening of the faculty year on 7 September 2021.

Ankie Broekers-Knol, President of the Dutch Senate and Leiden alumna, opened the new Alumni House at Rapenburg 68 on 5 September. The Alumni House, next door to the Old University Library, where the University's Administration and General Services are located, is the new home of the Leiden University…

A rejuvenated Naturalis opens its doors to the public on Saturday 31 August. Many researchers from Leiden University also work at the Naturalis research centre. Their workplace has also undergone a major facelift, and museum visitors can now watch their every move.

On 25 April the Dutch Review Committee for the Deployment of Powers (in Dutch: TIB) presented its first annual report to the First and Second Chamber of the Dutch government. The TIB informs in the annual report on its findings and activities in the period from 1 May 2018 to 1 April 2019. The report…

In an appeal case, an employee of a care organisation in Nijmegen who was shown the door because of her criticism about the coronavirus voiced on LinkedIn, has had her dismissal reviewed. The court in Arnhem ruled that the employee had crossed a line and that her employer was entitled to dismiss her…

On Sunday 28 October, the annual open day of the Old Observatory in Leiden takes place. During this day everyone can visit the Old Observatory for free and enjoy activities in this historic building.

On Saturday 17 September Leiden will once again be the setting of the Night of Art and Knowledge. Come along and enjoy a fascinating mix of knowledge, theatre, music and art in the museums and academic locations such as the Hortus botanicus. Tickets are now on sale.

In the article, Ruth Prins gives her opinion on the possible consequences chosen mayors might have for the police.

Work officially started on Schilperoortpark at the Leiden Bio Science Park on Wednesday 6 March. Town councillor Paul Dirkse and Vice-Chancellor of the Executive Board of the University Martijn Ridderbos planted the first tree together with Cas Schilperoort, grandson of Professor Rob Schilperoort, the…

On 14 September the construction of the Spui university building officially began.

The flavour of foodstuffs can be predicted by measuring the dynamic of their chemical components. Researchers, including Thomas Hankemeijer, will receive a grant from the Netherlands Organisation for Scientific Research (NWO) for research in this area. They will work with DSM and Unilever.

Scientists at the LUMC are working hard on potential virus inhibitors, antiviral screening and a treatment for COVID-19. SteunLeiden.nl has started a crowdfunding campaign for this research, under the hashtag #wakeuptocorona. Professor of Virology Eric Snijder explains why this is desperately needed…

We are happy to announce that GARDEN VI will be held February 23rd, 2019 at the German Archaeological Institute in Cairo (DAIK). The conference is jointly organised by the DAIK, the Netherlands-Flemish Institute in Cairo and the American University Cairo!

What are you going to do for peace and justice? What will your contribution be to achieving the UN Sustainable Development Goals? And who or what do you need to make sure your idea has impact? Come to Humanity House in The Hague on 21 September.

On Sunday 8 October 2023, during the Weekend van de Wetenschap, the Faculty of Science of Leiden University will open its doors to anyone curious about science from 11.00 to 16.00 hrs! Explore a world of wonder and discovery; where science is transformed into an unforgettable adventure. Intriguing…

The first 'Tafel van Thorbecke' took place at Leiden University on Thursday 17 November 2022. For this new lecture series, initiated by Fatma Çapkurt and Gert Jan Geertjes, external scholars will be invited to speak about their research in the field of constitutional and administrative law.

Jelle van Buuren, Assistant Professor Institute of Security and Global Affairs, discusses why extremist-right activists can be found in the corona-sceptic movement in Dutch News Magazine One World.

Anne Meuwese is appointed Professor of Public Law & Governance of AI at Leiden University as of 1 November 2020. This position is part of the University SAILS network, one of the new university-wide interdisciplinary development programmes funded by the Executive Board of Leiden University.