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There has been global growth in the number of social innovation initiatives launched in the university sector over the last decade. These initiatives aim to address complex social problems and to promote institutional change. This surge is occurring without a well-developed empirical knowledge base. This article provides a comprehensive description and analysis of the landscape of social innovation initiatives in the Canadian university sector. Findings show that nearly half of Canada's 96 universities are associated with at least one initiative; many are interdisciplinary and emphasize collaborative problem-solving with sectors outside the university; and government agencies and charitable foundations are the most common funding sources. Findings suggest there is room for growth and for linking and clustering initiatives. The article concludes with directions for future research. RÉSUMÉLa dernière décennie a été marquée par une croissance mondiale du nombre d'initiatives d'innovation sociale lancées dans le secteur universitaire. Ces initiatives visent à résoudre des problèmes sociaux complexes et à induire des changements institutionnels et systémiques. Cette poussée de l'activité d'innovation sociale se produit sans une base de connaissances empiriques bien développée. Nous y contribuons en fournissant une description et une analyse complètes de toutes les initiatives d'innovation sociale auxquelles participe le secteur universitaire canadien, de leurs caractéristiques et du paysage qu'elles constituent. Résultats notables: près de la moitié des 96 universités canadiennes sont associées à au moins une initiative; de nombreuses initiatives sont interdisciplinaires et mettent l'accent sur la résolution de problèmes en collaboration avec des secteurs extérieurs à l'université; Les agences gouvernementales et les fondations caritatives sont les sources de financement les plus courantes. Les résultats suggèrent: il existe un potentiel de croissance de l'innovation sociale dans le secteur; il y a moins de liens internes et de regroupement d'initiatives que ne le recommande la théorie de l'innovation; l'accent mis sur la collaboration extérieure rejoint la «troisième mission» des universités, qui existe depuis longtemps, mais les innovateurs sociaux ont des objectifs, des méthodes et des processus distincts pour mener à bien cette mission. Nous concluons avec les orientations pour les recherches futures. Keywords / Mots clés: Universities; Higher education; Social innovation; Community engagement; Service mission; Social change; Canada / Universités; Établissements d'enseignement supérieur; Innovation sociale; Engagement communautaire; Mission de service; Changement social; Canada

Extraformational sediment recycling (old sedimentary rock to new sedimentary rock) is a fundamental aspect of Earth's geological record; tectonism exposes sedimentary rock, whereupon it is weathered and eroded to form new sediment that later becomes lithified. On Mars, tectonism has been minor, but two decades of orbiter instrument-based studies show that some sedimentary rocks previously buried to depths of kilometers have been exposed, by erosion, at the surface. Four locations in Gale crater, explored using the National Aeronautics and Space Administration's Curiosity rover, exhibit sedimentary lithoclasts in sedimentary rock: At Marias Pass, they are mudstone fragments in sandstone derived from strata below an erosional unconformity; at Bimbe, they are pebble-sized sandstone and, possibly, laminated, intraclast-bearing, chemical (calcium sulfate) sediment fragments in conglomerates; at Cooperstown, they are pebble-sized fragments of sandstone within coarse sandstone; at Dingo Gap, they are cobble-sized, stratified sandstone fragments in conglomerate derived from an immediately underlying sandstone. Mars orbiter images show lithified sediment fans at the termini of canyons that incise sedimentary rock in Gale crater; these, too, consist of recycled, extraformational sediment. The recycled sediments in Gale crater are compositionally immature, indicating the dominance of physical weathering processes during the second known cycle. The observations at Marias Pass indicate that sediment eroded and removed from craters such as Gale crater during the Martian Hesperian Period could have been recycled to form new rock elsewhere. Our results permit prediction that lithified deltaic sediments at the Perseverance (landing in 2021) and Rosalind Franklin (landing in 2023) rover field sites could contain extraformational recycled sediment. ; With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (MDM-2017-0737)