Explore the secrets that underlie nature's battleground. Every animal has some kind of weapon, whether claws or horns, fangs or stings. But why are some armaments huge and extreme, far beyond any practical need?
Episode Duration: 56 minutes and 46 seconds
Episode Number: 4419
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PBS' premier science series helps viewers of all ages explore the science behind the headlines.
Along the way, NOVA programs demystify science and technology and highlight the people involved in scientific pursuits.
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