Reuters: Police arrested 19 members of the Nez Perce Tribe on Tuesday on suspicion of disorderly conduct for refusing to break a human chain blocking a highway in Idaho in protest against a 322-ton load of equipment bound for the tar sands of Alberta, Canada. The blockade by more than 250 mostly Native American protesters halted travel of a so-called megaload for two hours on a scenic roadway at the front lines of an ideological struggle over North American oil and gas development and its impact on the environment,...