In Miami-Dade County, researchers are working to save sites at risk of being destroyed by rising ocean waters.
The most comprehensive archeological database created to date finds that just a one-meter rise in sea level could imperil thousands of historically significant sites.
Until recently, the reigning theory on who the first Homo sapiens in North America were pointed to the Clovis people, evidence of whose culture was discovered in the American Southwest. That theory has been powerfully challenged by, among others, Meadowcroft, an archaeological dig in western Pennsylvania that began in the 1970s.
Archaeologists working in Peru sat on the find of a lifetime for months, keeping the artifacts safe from thieves.