Plant evades pesticides, machetes, metal sheets in US yards
                                
                                
                                    (Newser) -
                                    Suburbanites are fighting to keep bamboo at bay in backyards all over America, but the tropical grass is winning. The Asian import grows fast and has become a popular, environmentally friendly way to screen out the neighbors. But with roots like steel cables, the relentless spreader resists pesticides, pickaxes, and...