Norovirus spreads easily via contaminated food or drinking water, but a more insidious route is from a person touching a surface contaminated with the residue of stool or vomit from an infected person and then touching his or her mouth before hand-washing.
Overleaf, we follow the fortunes of Homo sapiens sapiens around the Black and Mediterranean Seas through 30 000 years of a tumultuous history marked by sporadic earthquakes, tsunamis and volcanic eruptions, as well as more insidious hazards tied to a changing climate, such as flooding from glacier melt, gradual sea-level rise or prolonged drought.