East Africa is facing its worst locust outbreak in 70 years, with Kenya hit particularly hard. Billions of locusts are swarming across the continent, and the UN Food and Agriculture Organization is appealing for 76 million U.S. dollars to control the problem. Kenya's Ministry of Agriculture has mobilized five planes to spray chemicals in one county in northern Kenya, but more swarms are appearing every week. The outbreak is also affecting parts of Ethiopia and Somalia. There are fears it could get worse in the coming weeks with forecasts of fresh rain.