What On Earth?
TVPG
Science
Documentary
An exploration of breathtaking images and unfathomable mysteries.
Cast & Crew
Upcoming TV Airings
The airings below are based on a generic national schedule. Times and dates can vary by TV provider.
Friday, December 19
Ancient Rome's El Dorado
Season 11 • Episode 10
One of the largest and most important gold mining operations of the Roman Empire.
Friday, December 19
Holes of Dead Sea Destruction
Season 11 • Episode 9
Experts reveal a history of destructive water diversion linked to massive sinkholes.
Friday, December 19
Mystery of the Fallen Star
Season 12 • Episode 2
Experts investigate a lost Civial War fort linked to an extraordinary community with a tragic past.
Friday, December 19
Bullseye in the Sky
Season 12 • Episode 1
A bizarre pattern of enormous circular clouds obscuring an island in the eastern Atlantic.
Friday, December 19
Blood Feud of Gresham Castle
Season 12 • Episode 5
Experts investigate rival royal families and a lost castle destroyed during a medieval blood feud.
Saturday, December 20
Mystery of the Fallen Star
Season 12 • Episode 2
Experts investigate a lost Civial War fort linked to an extraordinary community with a tragic past.
Saturday, December 20
Bullseye in the Sky
Season 12 • Episode 1
A bizarre pattern of enormous circular clouds obscuring an island in the eastern Atlantic.
Saturday, December 20
Blood Feud of Gresham Castle
Season 12 • Episode 5
Experts investigate rival royal families and a lost castle destroyed during a medieval blood feud.
Saturday, December 20
Holes of Dead Sea Destruction
Season 11 • Episode 9
Experts reveal a history of destructive water diversion linked to massive sinkholes.
Friday, December 26
Nevada's Mystery Marking
Season 12 • Episode 7
An emergency landing field linked to one of the most astonishing test programs in aviation history.
Friday, December 26
The Boneyard of Arizona
Season 12 • Episode 6
Satellite images capture miles of aircraft precisely arranged in the vast Arizona desert.
Friday, December 26
Secrets of Biosphere 2
Season 12 • Episode 9
A highly controversial research facility designed to prepare humanity for life on another world.
Friday, December 26
Ghost Ship of Ireland
Season 12 • Episode 8
A ghost ship appears overnight on the shores of Ireland; it may help solve other mysteries.
Friday, December 26
Arctic Hunters of Norway
Season 12 • Episode 10
Experts reveal revolutionary hunting techniques developed by the oldest surviving Norwegian tribe.
Saturday, December 27
Secrets of Biosphere 2
Season 12 • Episode 9
A highly controversial research facility designed to prepare humanity for life on another world.
Saturday, December 27
Ghost Ship of Ireland
Season 12 • Episode 8
A ghost ship appears overnight on the shores of Ireland; it may help solve other mysteries.
Saturday, December 27
Arctic Hunters of Norway
Season 12 • Episode 10
Experts reveal revolutionary hunting techniques developed by the oldest surviving Norwegian tribe.
Saturday, December 27
The Boneyard of Arizona
Season 12 • Episode 6
Satellite images capture miles of aircraft precisely arranged in the vast Arizona desert.
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