The South African Journal of Science is a multidisciplinary science journal published bimonthly by the Academy of Science of South Africa. Our mandate is to publish original research with an interdisciplinary or regional focus and to provide a forum for discussion of news and developments in research and higher education. About the cover: A meteor fireball (or bolide) approaching the Earth’s surface. During the early evening of 27 July 2018, residents in southwestern Madagascar observed a rapidly moving bright light in the sky which exploded into multiple smaller glowing fragments. In their article, Gibson and colleagues confirm that this event was a meteorite fall – only the second known meteorite fall over Madagascar and the first that can be linked to a bolide. Other articles in this issue explore the following: COVID-19 amplifies urban inequalities | SAWS weather forecasts and early warnings of severe weather | Review of Moringa oleifera production and consumption in SA | Dental caries in SA.