In another alarm of nature spiraling to hell in Florida, scientists suspect global warming has enabled devil fish to plague and ravage the St. Johns River. This summer, a team of state water and wildlife experts with the help of a commercial fishing crew cast industrial nets in a Central Florida portion of the river several miles south of Cocoa called Lake Winder. Of the estimated 40,000 pounds of many species hauled in for examination, only a small portion, less than 20 percent, was Floridian: bass, crappie, brim, catfish, bowfin and others. The rest were exotics: a type from South...