(FILES) This picture shows a sign reading 'Swimming prohibited - risk of death' on the enbankment of the FFESSM (Federation Francaise d'Etudes et de Sports Sous-Marins) owned Lac de Ciments in Beaumont-sur-Oise some 40kms north-west of Paris on August 24, 2022. During this second heatwave in Western Europe in less than a month, some people, in search of coolness, are venturing into unsupervised swimming areas, even into canals, and the heat has caused "40 deaths" by drowning in France since June 18, "mostly young people," according to the government. (Photo by Christophe ARCHAMBAULT / AFP via Getty Images)