What’s that smell? Scientists discover what makes locusts swarm.

Grist
By Emily PontecorvoAug 12, 2020, 11:00 am240 pts
The photos are truly the stuff of nightmares: Swarms of desert locusts blocking out the sun, blanketing fields, and devouring crops in East Africa, the Middle East, and South Asia. It’s the worst outbreak those regions have seen in decades. The locusts were already becoming a crisis, threatening food security…

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