Secrets of the Sky Tombs
About the Episode
Evidence discovered in the world’s highest tombs reveals ancient rituals and beliefs.
Aired:
01/03/17
| Expires: | Runtime: 28s
Recent Episodes
-
Episode 10, Season 52<br> Ultimate Crash Test: Countdown
A first-of-its-kind experiment aims to stage a multi-vehicle pileup to gain new data on car safety.| 53:29 -
Episode 9, Season 52<br> Critical Condition: Health in Black America
After centuries of pseudoscience, researchers examine the causes of racial health disparities.| 1:36:42
Extras
-
Georgia’s First Black-Owned Hemp Farm
The legal definition of hemp is a cannabis plant that has no more than 0.3% of THC.3:32 -
Was Eating Insects Key to Human Brain Evolution?
Insects may have provided humans' ancestors with key nutrients.3:32 -
NOVA Universe Revealed: Black Holes Preview
Take a seat on the ultimate thrill ride as NOVA explores the universe’s strangest objects.0:30 -
How a Star Dies in a Supernova
The saying "live fast, die young" applies to stars, astrophysicist Grant Tremblay says.2:48 -
How Does a Brain on THC Compare to a Brain on CBD?
Scientists are working to understand the true effects of cannabis on the brain.4:30 -
NOVA Universe Revealed: Alien Worlds Preview
Visit exotic worlds orbiting distant suns as NOVA tackles the big question: are we alone?0:30 -
-
Can this Cuttlefish Pass an Intelligence Test?
Witness a hungry cuttlefish take part in an oddly adorable, psychological test.9:51 -
Insects Make Protein More Efficiently Than Mammals
Most of the calories insects eat can be converted into nutrients that we can then eat.5:14 -
CBD Helps Anxiety Patients in a Clinical Trial
Unlike THC, CBD is not psychoactive and not known to be intoxicating.3:04
