Climate change risk far higher than previously thought; Sea-level rise could affect 13m US people

The number of people who could be displaced this century in US coastal regions — due to rising sea levels, as a result of climate change — is much higher than previously thought.

Thirteen million Americans are at risk of a 1.8m rise, including six million in Florida, scientists said.

The researchers, from the US Oceanic and Atmospheric Administration, assessed sea-level change scenarios that might have occurred by 2100 for coastal states, along with population growth trends and projections in high-risk areas.