Why did 45 million grasshoppers swarm Las Vegas in 2019? Brights lights weren't the only factor.

Why did 45 million grasshoppers swarm Las Vegas in 2019? Brights lights weren't the only factor.

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In 2019, a massive swarm of grasshoppers tried their luck in Las Vegas. But light pollution was only one cause for this massive influx of insects.
 

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