Riddles of the Sphinx

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Recent Episodes

Australia's First 4 Billion Years: Strange Creatures

Australia's First 4 Billion Years: Strange Creatures

NOVA

After a massive extinction, diverse marsupials came to dominate this isolated continent.

60 min.

Australia's First 4 Billion Years: Life Explodes

Australia's First 4 Billion Years: Life Explodes

NOVA

Part 2 of 4. The move of life from ocean to land.

60 min.

Mystery of a Masterpiece

Mystery of a Masterpiece

NOVA

Examining the work of art sleuths.

1 min.

Deadliest Earthquakes

Deadliest Earthquakes

NOVA

Big quakes are inevitable, but can we prevent their devastation?

Separating Twins

Separating Twins

NOVA

The story of conjoined twins Trishna and Krishna.

60 min.

D-Day's Sunken Secrets

D-Day's Sunken Secrets

NOVA

Exploring the relics on the sea floor near Normandy, France.

120 min.

Schedule

Thursday
9/4/14 2:00 AM
WGBX 44
Thursday
9/4/14 5:00 AM
WGBH 2
Thursday
9/4/14 7:00 PM
WGBH World
Friday
9/5/14 12:00 AM
WGBH World
Ghosts of Machu Picchu Ghosts of Machu Picchu Ghosts of Machu Picchu Ghosts of Machu Picchu

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For 45 centuries, the Great Sphinx has cast its enigmatic gaze over Egypts Giza plateau. This strange half-human, half-lion image has inspired countless fantastic theories about its origins. Nova's expert team of archeologists, including Mark Lehner (director, Ancient Egypt Research Associates), carries out eye-opening experiments that reveal the techniques and incredible labor that was invested in the carving of this gigantic sculpture.

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