Rediscover in images the main past libraries exhibitions Leguminous discovery (2016) Leguminous or fabaceae: while lentils and beans are part of this large family (with more than 20,000 species) ajonc, mimosa, lupine and Judean tree are also 25 centuries of light(s) (2015) International year dedicated to major scientific events in the field of optics, such as the millennium of the great discoveries of Arab scientists of the 10th century, the discovery of laser in 1960 and the use of fibre optics in telecommunications in 1965 From mineralogy to crystallography (2014) The exhibition shows the evolution of macroscopic mineralogy to microscopic crystallography through original writings, from Romé de l'Isle to Bragg, including Haüy, Delafosse, Pasteur and Bravais. From Natural History to Biodiversity (2010) The exhibition shows that, since the 19th century, great naturalists from Rennes have been passionate about biological diversity, thus advancing the knowledge of species and their functioning