epaselect epa07738621 A Yemeni child shows a desert locust in a plastic bottle as swarms of desert locusts fly over a neighborhood in Sana'a, Yemen, 24 July 2019. Swarms of desert locusts are spreading throughout several Yemen cities, including Sana'a. Traditionally, many Yemenis roast locusts and eat them. EPA/YAHYA ARHAB
Locusts swarm the sky over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
A man tries to catch locusts while standing on a rooftop as they swarm over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
A boy holds desert locusts caught while swarming the sky over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
TOPSHOT - Children try to catch locusts while standing on a rooftop as they swarm over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
Locusts swarm the sky over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
Locusts swarm the sky over the Huthi-rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
A boy holds desert locusts caught while swarming the sky over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
A man tries to catch locusts while standing on a rooftop as they swarm over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
epaselect epa07738624 Yemeni children seek to catch desert locusts flying over a neighborhood in Sana'a, Yemen, 24 July 2019. Swarms of desert locusts are spreading throughout several Yemen cities, including Sana'a. Traditionally, many Yemenis roast locusts and eat them. EPA/YAHYA ARHAB
epa07738627 A Yemeni girl attempts to catch desert locusts flying over a neighborhood in Sana'a, Yemen, 24 July 2019. Swarms of desert locusts are spreading throughout several Yemen cities, including Sana'a. Traditionally, many Yemenis roast locusts and eat them. EPA/YAHYA ARHAB
epaselect epa07738621 A Yemeni child shows a desert locust in a plastic bottle as swarms of desert locusts fly over a neighborhood in Sana'a, Yemen, 24 July 2019. Swarms of desert locusts are spreading throughout several Yemen cities, including Sana'a. Traditionally, many Yemenis roast locusts and eat them. EPA/YAHYA ARHAB
Locusts swarm the sky over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
A man tries to catch locusts while standing on a rooftop as they swarm over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
A boy holds desert locusts caught while swarming the sky over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
TOPSHOT - Children try to catch locusts while standing on a rooftop as they swarm over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
Locusts swarm the sky over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
Locusts swarm the sky over the Huthi-rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
A boy holds desert locusts caught while swarming the sky over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
A man tries to catch locusts while standing on a rooftop as they swarm over the Huthi rebel-held Yemeni capital Sanaa on July 28, 2019. / AFP / Mohammed HUWAIS
epaselect epa07738624 Yemeni children seek to catch desert locusts flying over a neighborhood in Sana'a, Yemen, 24 July 2019. Swarms of desert locusts are spreading throughout several Yemen cities, including Sana'a. Traditionally, many Yemenis roast locusts and eat them. EPA/YAHYA ARHAB
epa07738627 A Yemeni girl attempts to catch desert locusts flying over a neighborhood in Sana'a, Yemen, 24 July 2019. Swarms of desert locusts are spreading throughout several Yemen cities, including Sana'a. Traditionally, many Yemenis roast locusts and eat them. EPA/YAHYA ARHAB
epaselect epa07738621 A Yemeni child shows a desert locust in a plastic bottle as swarms of desert locusts fly over a neighborhood in Sana'a, Yemen, 24 July 2019. Swarms of desert locusts are spreading throughout several Yemen cities, including Sana'a. Traditionally, many Yemenis roast locusts and eat them. EPA/YAHYA ARHAB
Yemen appeals for international support amid 'massive' locust outbreak
Huge swarms are sweeping across the war-torn country, destroying crops before help can arrive