As Harmon Maher walked along the Keystone Trail in central Omaha one morning in February, he spotted something odd: The creek next to the path, normally a gray-green color, ran bright orange. It was full of sediment, probably from some …


As Harmon Maher walked along the Keystone Trail in central Omaha one morning in February, he spotted something odd: The creek next to the path, normally a gray-green color, ran bright orange. It was full of sediment, probably from some …