Dozens of trucks have started dumping hundreds of thousands of tons of sand on Miami Beach as part of US government measures to protect Florida's tourist destinations against the effects of climate change.
"We have erosion hotspots," said Stephen Leatherman, an expert on beaches and the environment at
Florida International University.
Leatherman -- known locally as "Dr Beach" -- said that rising sea levels, triggered by climate change, are causing the accelerated erosion of the famous beach, as well as coastal storms and in particular hurricanes.