sprep-pa
...wetlands have many names and serve many environmental purposes. But for centuries they have been viewed simply as hindrances to human development, obstacles to drain and dredge to make room for progress. Few have escaped this pressure. Research indicates the world may have lost as much as 87% of its wetlands over the past 300 years, with much of this loss happening after 1900. But in the mid-20th century scientists started grasping just how ecologically – and economically – important wetlands are...
