| A False Sense of SecurityLester R. BrownAlthough human activities have alwaysaltered the natural environment, thescale of disruptions in the late twentiethcentury is unprecedented. The collectiveactions of a world population approach-ing five billion now appear capable ofcausing continental and even globalchanges in natural systems. As humanpressures build, the relationship be-tween people and their natural supportsystems can cross key thresholds, lead-ing to a breakdown. |
内容加载中，请稍后...
商品评论（0条）