Dust up

时间:2019-03-07 02:01:02166网络整理admin

By Jeff Hecht SOME farmers may be stoking a vicious cycle of desertification, making arid fields even more parched. Satellite observations suggest that airborne dust from deserts can stop rain from falling—the exact opposite of what meteorologists expected. The effect may already be influencing the Sahel region of Africa, where herds of grazing livestock kick up huge amounts of dust,