Rising sea levels resulting from climate change may lead to considerable isolation threats to millions of people living along both US coasts, a new study has warned. In addition to the acute risk of flooding, the study’s authors say that the increasing frequency of coastal isolation caused by large storms or high tides could lead to blocked road access, preventing food deliveries and other essential services. The risk could affect individuals, neighbourhoods or larger communities, and as many as 9-12 million people by 2100. In the study of rising sea levels and coastal isolation, the authors accounted for access to commonly used essential service facilities such as fire stations and primary schools. They concluded that isolation risks faced by many areas were low-risk for inundation and that millions of people in the US were at risk of isolation but not inundation before 2080.