美国总统特朗普曾向选民承诺要大规模驱逐遣返非法移民。但这其中数以百万计的移民是美国关键的劳动力,尤其是在农业。《华尔街日报》探讨了他的移民计划将如何颠覆这一产业。封面图片来源:Carlos Barria/Reuters/Etienne Laurent/AFP/Getty Images ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...