Rated: 6.8 out of 10 with 114 votes.
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.
Season: 44
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| # | Title | Watched | Air Date | |||
|---|---|---|---|---|---|---|
| Eps 1 | 2016-09-07 | |||||
| Eps 2 | 2016-09-14 | |||||
| Eps 3 | 2016-10-05 | |||||
| Eps 4 | 2016-10-12 | |||||
| Eps 5 | 2016-11-02 | |||||
| Eps 6 | 2016-11-09 | |||||
| Eps 7 | 2016-11-16 | |||||
| Eps 8 | 2017-01-04 | |||||
| Eps 9 | 2017-01-11 | |||||
| Eps 10 | 2017-02-01 | |||||
| Eps 11 | 2017-02-08 | |||||
| Eps 12 | 2017-02-15 | |||||
| Eps 13 | 2017-02-22 | |||||
| Eps 14 | 2017-04-19 | |||||
| Eps 15 | 2017-04-26 | |||||
| Eps 16 | 2017-05-17 | |||||
| Eps 17 | 2017-05-31 | |||||
| Eps 18 | 2017-08-23 | |||||
| Eps 19 | 2017-08-31 | |||||
| Eps 20 | 2017-09-13 | |||||
| Eps 21 | 2017-10-04 | |||||
| Eps 22 | 2017-10-18 | |||||
| Eps 23 | 2017-10-25 | |||||
| Eps 24 | 2017-11-01 | |||||
| Eps 25 | 2017-11-08 | |||||
| Eps 26 | 2017-11-22 | |||||
| Eps 27 | 2017-12-20 | |||||
| Eps 28 | 2017-12-27 |
NOVA - Season List:
