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NOVA - Season 44 - Episode 26 - Extreme Animal Weapons
From lobster claws and dog teeth to bee stings and snake fangs, every creature depends on a weapon. But some are armed to extremes that make no practical sense—whether it’s bull elks with giant 40-pound antler racks or tiny rhinoceros beetles with horns bigger than their body. What explains giant tusks, horns, and claws that can slow an animal down and even impair health and nutrition? NOVA investigates the riddle of outsize weaponry and uncovers a bold new theory about what triggers an animal arms race. In creatures as varied as dung beetles and saber-toothed tigers, shrimp and elephants, the same hidden factors trigger the race and, once started, these arms races unfold in exactly the same pattern. Join scientists as they crack the secret biological code that underlies nature’s battleground.
Genre: Documentary
Actor: Jay O. Sanders, Craig Sechler, Lance Lewman
Creators:
Country: USA
Languages: en,
Episode: 26
Runtime: 55
Date Modified: 2019-07-04 16:22:46
Air Date: 2017-11-22
Year Released: 1974
Rating: 7.710 out of 10
Content Rating: TV-PG
Views: 34
Quality: HD
Networks:
PBS,
Also known as: PBS新星Nova, نوا, نووآ, PBS Nova, PBS NOVA
Keywords:Nature
Candid
Inspirational
Factual
Dramatic
Informative
Instructive
Science
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