Updated on March 16 at 8:42 p.m. ET
Long before condominiums lined the shoreline in Miami Beach, before air conditioning, many thousands of years before Columbus, people lived along Florida's coastline.
Archaeologists say the remains of their settlements are particularly vulnerable to rising sea levels as a result of climate change.
In Florida's Palm Beach County researchers are planning how best to protect and preserve the ancient sites most at risk from rising seas.