I don’t know why we keep building these fucking dams,” Adams said in a surprisingly forceful British whisper. “Not only do they cause environmental and social disasters, they, with very few exceptions, all fail to do what they were supposed to do in the first place. Look at the Amazon, where they’ve all silted up. What is the reaction to that? They’re going to build another eighty of them. It’s just balmy. We must have beaver genes or something. . . . There’s just this kind of sensational desire to build dams, and maybe that should be looked at and excised from human nature. Maybe the Human Genome Project can locate the beaver/dam-building gene and cut that out.
What do you consider the most interesting man-made structure in the galaxy?The dam they are building at the Three Gorges on the Yangtse. Though perhaps '“baffling'” would be a better word. Dams almost never do what they were intended to do, but create devastation beyond belief. And yet we keep on building them, and I can'’t help but wonder why. I'’m convinced that if we go back far enough in the history of the human species, we will find some beaver genes creeping in there somewhere. It'’s the only explanation that makes sense.
By erecting thirty thousand dams of significant size across the American West, they dewatered countless rivers, wiped out millions of acres of riparian habitat, shut off many thousands of river miles of salmon habitat, silted over spawning beds, poisoned return flows with agricultural chemicals, set the plague of livestock loose on the arid land--in a nutshell they made it close to impossible for numerous native species to survive.