A few miles inland from the Sea of Cortez in Mexico, amid cracked earth and mesquite and sun-bleached cac-tus, neat rows of emerald plants are sprouting from the desert floor.

• 从墨西哥科提兹海往内陆走几哩，在乾燥龟裂的土地及豆科灌木和经阳光曝晒褪色的仙人掌当中，一排排整整齐齐的翠绿色植物从沙漠荒地中发芽生长。