Season 24, Episode 5 Secrets of Lost Empires: Obelisk
First Aired: February 12, 1997
Theories on the construction of Egyptian obelisks, the 400-ton granite towers created at the time of the New Kingdom (1570-1070 B.C.), in Part 3 of "Secrets of Lost Empires." Included: tests are performed on an unfinished obelisk found in an Aswan quarry.
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- Premiered: March 3, 1974
- Rating: None
- Premise: PBS's premier science-documentary series, which has won six Peabody Awards and more than 20 Emmys (four in 2002 alone) since its 1974 debut. `Nova' clearly, and often engagingly, `demystifies' a vast range of science, technology and history topics---past a… (more)