Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Welcome to Leiden University

Crucial information about research, funding or how university rankings are created is often not freely accessible. The Barcelona Declaration on Open Research Information calls for such information to be made open. Professor Ludo Waltman is one of its initiators. What needs to change?

What began as a PhD project has grown into a website with 120,000 unique visitors each year. With the platform OpenML, researcher Jan van Rijn is contributing to open science, aiming to make machine learning more transparent, accessible, and fair.

Studying is already a lot of work, so on this page you'll find the most sought-after information for second- and third-year students. Do you feel something important is missing? Let us know via the feedback button, and we'll improve it for the next student.

International prosecutors, for instance at the International Criminal Court in The Hague, investigate particularly serious crimes such as genocide. They decide, among other things, whether or not to prosecute. PhD candidate Cale Davis investigated how prosecutors come to such decisions and will defend…

Wie empathisch glimlacht om iemands geluk of fronst om iemands leed, stijgt in aantrekkingskracht. Andersom maakt glimlachen uit leedvermaak iemand niet minder aantrekkelijk. Roujia Feng promoveert 26 mei op onderzoek naar de sociale gevolgen van het uiten van (contra)empathische emoties.

Innovations only achieve true success when people actually use them. PhD researcher Max van Haastrecht developed a cybersecurity app for small businesses and learned how essential it is to align technology with real-world practice.

A group of biology students are working on a solution to the world’s plastics problem by getting bacteria to make biodegradable plastic.

Building a high-quality MRI scanner at the lowest possible cost. That was the challenge Thomas O’Reilly and Karina Soemarwoto set themselves. This year, they are selling their self-built MRI scanner to their first ten customers, with many more expected to follow soon. In doing so, they hope to make…

How is it that the internet works so well, with billions of users sending millions of gigabytes all together every day? That's because the foundation of the internet is solidly set up. Yet sometimes there are problems on the internet. For example, when certain systems misbehave and disrupt the routing…

What happens in our bodies when we care for children? And why are some people more caring than others?

No more smelly lorries disposing of building waste or delivering building materials to the centre of Leiden. That’s Leiden University’s ambition for its future renovation or construction projects in the city centre. Electric boats should make the process cleaner and less inconvenient for the people…

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…

Theoretical research does not always give us the right solution to a problem in society. This message, loud and clear, is delivered during the final presentations of the Master Honours Class 'Social Innovation in Action'.

For her research, PhD candidate Liselore Tissen put one famous painting after another through a 3D scanner. The resulting reproductions were indistinguishable from the originals. But what does this mean for our interpretation of art?

Lotje Zuur sometimes has to perform disfiguring operations. As a head and neck surgeon, she removes parts of the mouth, throat or face of people with cancer. Now a promising treatment may make such operations unnecessary. What would this mean for patients? This is what her inaugural speech on 19 September…

The ‘Discovery of the Entrepreneurial Ecosystem of EUniWell’s Consortium’s Members’ project has received a EUniWell seed grant. Sjoerd Louwaars, the representative from Leiden University, talks about the project and the first results.

Campus The Hague gained a new facility. On Thursday 17 February, POPcorner was opened, helping students find their way during their studies and within the university buildings.