This is deeply worrying to companies, and some of them have started to fight it, by creating artificial scarcity. For example, in Singapore, a small cafe called Liberty Coffee only opens on random ...

水资源短缺已经影响到了各大洲。大约12亿人，几乎是世界五分之一的人口，生活在水资源自然缺乏的区域，还有5亿人正接近这种状况。另外还有16 ...