Picture taken at the Desert of Gilbues, in Gilbues, in the northeastern state of Piaui, Brazil, on September 30, 2023. Gilbues is Brazil’s worst desertification hotspot, where a parched, canyon-pocked landscape is swallowing up farms and residences, claiming an area bigger than New York City. Experts say the phenomenon is caused by rampant erosion of the region’s naturally fragile soil, exacerbated by deforestation, reckless development and probably climate change. (Photo by Nelson ALMEIDA / AFP)