Professor Maurizio Casiraghi of the Department of Biotechnology and Biosciences of Milano Bicocca records a lesson on the evolution of genomes in an empty classroom in Milan, on March 5, 2020. - Italy closed all schools and universities until March 15 to help combat the spread of the novel coronavirus crisis. The government decision was announced moments after health officials said the death toll from COVID-19 had jumped to 107 and the number of cases had passed 3,000. (Photo by Piero CRUCIATTI / AFP)