A new memorial stone on the facade of a student house in the Hugo de Grootstraat is a reminder of the dozens of Indonesian students who studied in Leiden before and during the Second World War. Some of them were active in the Resistance, which cost a number of them their lives.

3 October University has become something of a tradition: a bit of science among the Leidens Ontzet celebrations. During the new and improved edition, the WetenschapsWarenMarkt (Science Market), visitors spoke to researchers about the nitrogen problem, making organs and the city’s connections with A…