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Discover what causes desert locusts to transform into crop-consuming plagues and how they directly endanger humanity.

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A ravenous swarm stretches as far as the eye can see. It has no leader or strategic plan; its only goals are to eat, breed, and move on. These are desert locusts— infamous for their capacity for destruction. But most of the time desert locusts are no more dangerous than grasshoppers. So what does it take to turn these harmless insects into a crop-consuming plague? Jeffrey A. Lockwood investigates.

Lesson by Jeffrey A. Lockwood, directed by Franz Palomares.

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