When did Horizon Season 43 Episode 12 air?
Horizon Season 43 Episode 12 aired on July 20, 2006.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
A team of scientists set out to solve the mystery of chunks of ancient glass scattered in a remote part of the Sahara Desert. Their quest takes them on a perilous journey into the Great Sand Sea, the wastes of Siberia and the test site of the world's first atomic bomb in New Mexico. What their search uncovers is a devastating new natural phenomenon.
Direct answers for episode-level questions and details.
Horizon Season 43 Episode 12 aired on July 20, 2006.
This episode runs for approximately 60 minutes.
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