The Most Unknown

Diving Underground to Unearth Clues to Life’s Origins

In episode one of The Most Unknown, microbiologist Jennifer Macalady, along with a team of divers, spelunk through Italy’s water-rich Frasassi Caves to search for mysterious microbes that could hold clues to the origins of life on Earth. For the past 20 years, Macalady and her team have rappelled through Frasassi’s...

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