REDFORD TOWNSHIP, Mich. (AP) - A business owner checking a Dumpster for scrap cardboard was alarmed by something else: gas masks, maps, an M-80 explosive, arson photos and anti-government writings. "It was kinda scary," Andy Wishaw recalled. "Some of my employees said it's nothing. I thought, 'What's it going to hurt to call the police?'" The discovery turned out to be a big break for the FBI. Agents on the trail of eco-terrorism used the contents to help solve more than a dozen acts of arson and tree spikings in Michigan and Indiana committed in the name of a radical...