Desert locusts swarm the sky over the Huthi rebel-held Yemeni capital Sanaa and surrounding regions on July 28, 2019. / VCG Photo

The summer breeding of locust was amplified by heavy rains, posing a serious threat to agricultural production areas of Yemen. / VCG Photo

Desert locusts live about three months, and a female locust lays about 300 eggs. A very small swarm eats the same amount of food in one day as about 35,000 people do. / VCG Photo

This is the second major swarm to hit the Yemeni capital in recent weeks, with another passing through in June. Though these insects might devastate farms, they also provide a bumper crop of this Yemeni delicacy. / VCG Photo