there is no global warming. But man has a little to do with a changing envireoment. For instance, the calumet river in the the south part of chicago, was always a dark brown color, maybe the 5 steel mills along its course had something to do with it.Well all those steel mills are gone. Now you can even catch a few walleyes in that river, plus small outh and large mouth bass, salmon, and there are even reports of an occasional lake trout showing up. When I flew home from germany, the plane flew over the south western part of lake michigan, the brown stain was visible for over 40 miles of lake shore. Not anymore. the mills are gone, instead the condos are sprouting up like weeds. the shorelines we used to wade and trout fish from, are now mostly private property. The old boat ramps that charged 10 bucks a launch, are now marinas, where 10 bucks can get a bottle of beer, and very little change. NO you can't fish in the harbors, folks complain about damages to the yachts caused by fishermen. If I remember right, when I lived in that area, the population of america was a little over 260 million folks, now how large is it? We had dems and reps, not liberals and conservatives, I even was able to have some rep. friends, not anymore, and I don't miss them either.