"These three concurrent, intertwined transitions--demographic, economic, environmental--are what historians of the future will remember when they look back on our age. They are transforming everything from geopolitics to the structure of families. And they pose problems on a scale that humans have little experience with. As Harvard University biologist E. O. Wilson puts it, we are about to pass through "the bottleneck," a period of maximum stress on natural resources and human ingenuity."
Thanks to Brenda Meyer