As Locusts Swarmed East Africa, This Tech Helped Squash Them

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https://www.nytimes.com/2021/04/08/science/locust-swarms-africa.html

Source: By Rachel Nuwer, The New York Times. 

Excerpt: In 2020, billions of the insects descended on East African countries that had not seen locusts in decades, fueled by unusual weather connected to climate change. Kenya had last dealt with a plague of this scale more than 70 years ago; Ethiopia and Somalia, more than 30 years ago. Nineteen million farmers and herders across these three countries, which bore the brunt of the damage, saw their livelihoods severely affected. ...With swarms suddenly covering an area of Kenya larger than New Jersey, officials were tasked with creating a locust-combating operation virtually from scratch. Collecting dependable, detailed data about locusts was the first crucial step. ...Rather than try to rewrite the locust-tracking software for newer tablets, Mr. Cressman thought it would be more efficient to create a simple smartphone app that would allow anyone to collect data like an expert. He reached out to Dr. Hughes, who had already created a similar mobile tool with the Food and Agriculture Organization to track a devastating crop pest, the fall armyworm, through PlantVillage, which he founded. PlantVillage’s app uses artificial intelligence and machine learning to help farmers in 60 countries, primarily in Africa, diagnose problems in their fields. Borrowing from this blueprint, Dr. Hughes and his colleagues completed the new app, eLocust3m, in just a month. Unlike the previous tablet-based program, anyone with a smartphone can use eLocust3m. The app presents photos of locusts at different stages of their life cycles, which helps users diagnose what they see in the field. GPS coordinates are automatically recorded and algorithms double check photos submitted with each entry. ...now, countries are better able to combat them — equipped with the new technology, 28 aircraft and thousands of trained government locust trackers. In February alone, locust-patrolling pilots in Kenya, Ethiopia and Somalia flew the equivalent of three times the circumference of the globe. They sprayed swarms before they had time to mature, stopping the insects from multiplying and spreading into Uganda and South Sudan, as they did last year.... 

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