20 年前,“酸雨”对环境的破坏曾让人们忧心忡忡,担心污染会引起森林的退化。法国农艺研究所的科学家们研究了位于法国东北部的孚日山脉后发现,在大片退化的森林中间,竟然有一些地块“幸免于难”,这着实令人费解。更让人惊奇的是,森林茁壮生长的这些地块的几何形状或为正方形,? Twenty years ago, the environmental damage caused by “acid rain” has caused people’s worries, fearing pollution will cause the degradation of forests. Scientists at the French Institute of Agronomy, studying the Vosges mountains in northeastern France, found that it was puzzling that some of the plots were “spared” in the midst of deforestation. Even more surprising is the geometry of these plots that thrive in the forest or are square?