Rising desertification shows we can't keep farming with fossil fuels

Three-quarters of Earth's land has become drier since 1990. Droughts come and go—more often and more extreme with the incessant rise of greenhouse gas emissions over the last three decades—but burning fossil fuels is transforming our blue planet. A new report from scientists convened by the United Nations found that an area as large as India has become arid, and it's probably permanent.