Growing wheat in sand may be regarded as impossible in most countries. But China’s “desert wheat farms” have survived repeated sandstorms and continue to grow following an initial trial in the country’s largest desert, as part of an ongoing effort to combat desertification and unlock the land’s potential for strengthening national food security. Two years ago, on the fringes of the Taklamakan Desert in the Xinjiang Uygur autonomous region, China launched an unprecedented project to plant wheat...