What lies beyond the reach of the naked eye, and how do these hidden forces shape our lives? This hour, TED speakers reveal forgotten cities, underwater canyons, tiny parasites, and a boiling river.

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Categories:  History,  People and Places,  Education

Tags:  Ted Radio Hour,  underwater,  forgotten cities,  underwater canyons,  parasites,  boiling river,  ocean,  ocean exploration,  abe davis,  ed yong,  sarah parcak,  robert ballard,  andres ruso,