AFP: Climate-change activists paralyzed the world’s largest coal-exporting port for five hours when they chained themselves to machinery in the Australian city of Newcastle. Seven men and two women from action group Rising Tide sneaked into the port north of Sydney before dawn and attached themselves to loaders in what it said was “an emergency intervention.” “There was a total shutdown for a period of about five hours and a disruption for a period of about eight hours,” a port …