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Video thumbnail: Be Smart The Mystery of Earth's Disappearing Giants

The Mystery of Earth's Disappearing Giants

Video thumbnail: Be Smart Dung Beetles: The Poop-Rolling Stargazers of the Serenget

Dung Beetles: The Poop-Rolling Stargazers of the Serenget

Video thumbnail: Be Smart These Butt-Tickling Ants Are Endangered Butterfly Bodyguards

These Butt-Tickling Ants Are Endangered Butterfly Bodyguards

Video thumbnail: Be Smart These Death-Eating Scavengers Are Real Life-Savers

These Death-Eating Scavengers Are Real Life-Savers

Video thumbnail: Be Smart Elephant Moms Carry the Wisdom of Generations

Elephant Moms Carry the Wisdom of Generations

Video thumbnail: Be Smart Are Some Species More Important Than Others?

Are Some Species More Important Than Others?

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